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Aharonian F, Benkhali FA, Aschersleben J, Ashkar H, Backes M, Martins VB, Batzofin R, Becherini Y, Berge D, Bernlöhr K, Bi B, Böttcher M, Boisson C, Bolmont J, de Lavergne MDB, Borowska J, Bouyahiaoui M, Breuhaus M, Brose R, Brown AM, Brun F, Bruno B, Bulik T, Burger-Scheidlin C, Caroff S, Casanova S, Cecil R, Celic J, Cerruti M, Chand T, Chandra S, Chen A, Chibueze J, Chibueze O, Cotter G, Dai S, Mbarubucyeye JD, Djannati-Ataï A, Dmytriiev A, Doroshenko V, Egberts K, Einecke S, Ernenwein JP, Filipovic M, Fontaine G, Füßling M, Funk S, Gabici S, Ghafourizadeh S, Giavitto G, Glawion D, Glicenstein JF, Grolleron G, Haerer L, Hinton JA, Hofmann W, Holch TL, Holler M, Horns D, Jamrozy M, Jankowsky F, Jardin-Blicq A, Joshi V, Jung-Richardt I, Kasai E, Katarzyński K, Khatoon R, Khélifi B, Klepser S, Kluźniak W, Komin N, Kosack K, Kostunin D, Kundu A, Lang RG, Le Stum S, Leitl F, Lemière A, Lenain JP, Leuschner F, Lohse T, Luashvili A, Lypova I, Mackey J, Malyshev D, Malyshev D, Marandon V, Marchegiani P, Marcowith A, Martí-Devesa G, Marx R, Mehta A, Mitchell A, Moderski R, Mohrmann L, Montanari A, Moulin E, Murach T, Nakashima K, de Naurois M, Niemiec J, Noel AP, Ohm S, Olivera-Nieto L, de Ona Wilhelmi E, Ostrowski M, Panny S, Panter M, Parsons RD, Peron G, Prokhorov DA, Pühlhofer G, Punch M, Quirrenbach A, Reichherzer P, Reimer A, Reimer O, Ren H, Renaud M, Reville B, Rieger F, Rowell G, Rudak B, Ricarte HR, Ruiz-Velasco E, Sahakian V, Salzmann H, Santangelo A, Sasaki M, Schäfer J, Schüssler F, Schwanke U, Shapopi JNS, Sol H, Specovius A, Spencer S, Stawarz L, Steenkamp R, Steinmassl S, Steppa C, Streil K, Sushch I, Suzuki H, Takahashi T, Tanaka T, Taylor AM, Terrier R, Tsirou M, Tsuji N, Unbehaun T, van Eldik C, Vecchi M, Veh J, Venter C, Vink J, Wach T, Wagner SJ, Werner F, White R, Wierzcholska A, Wong YW, Zacharias M, Zargaryan D, Zdziarski AA, Zech A, Zouari S, Żywucka N. Acceleration and transport of relativistic electrons in the jets of the microquasar SS 433. Science 2024; 383:402-406. [PMID: 38271522 DOI: 10.1126/science.adi2048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 12/04/2023] [Indexed: 01/27/2024]
Abstract
SS 433 is a microquasar, a stellar binary system that launches collimated relativistic jets. We observed SS 433 in gamma rays using the High Energy Stereoscopic System (H.E.S.S.) and found an energy-dependent shift in the apparent position of the gamma-ray emission from the parsec-scale jets. These observations trace the energetic electron population and indicate that inverse Compton scattering is the emission mechanism of the gamma rays. Our modeling of the energy-dependent gamma-ray morphology constrains the location of particle acceleration and requires an abrupt deceleration of the jet flow. We infer the presence of shocks on either side of the binary system, at distances of 25 to 30 parsecs, and that self-collimation of the precessing jets forms the shocks, which then efficiently accelerate electrons.
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Affiliation(s)
- F Aharonian
- Dublin Institute for Advanced Studies, Dublin D02 XF86, Ireland
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - F Ait Benkhali
- Landessternwarte, Universität Heidelberg, Heidelberg D-69117, Germany
| | - J Aschersleben
- Kapteyn Astronomical Institute, University of Groningen, Groningen 9747 AD, Netherlands
| | - H Ashkar
- Laboratoire Leprince-Ringuet, École Polytechnique, Centre national de la recherche scientifique, Institut Polytechnique de Paris, Palaiseau F-91128, France
| | - M Backes
- Department of Physics, University of Namibia, Windhoek 10005, Namibia
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | | | - R Batzofin
- Institut für Physik und Astronomie, Universität Potsdam, Potsdam 14476, Germany
| | - Y Becherini
- Laboratoire Astroparticule et Cosmologie, Université de Paris, Centre national de la recherche scientifique, Paris F-75013, France
- Department of Physics and Electrical Engineering, Linnaeus University, Växjö 351 95, Sweden
| | - D Berge
- Deutsches Elektronen-Synchrotron, Zeuthen D-15738, Germany
- Institut für Physik, Humboldt-Universität zu Berlin, Berlin D-12489, Germany
| | - K Bernlöhr
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - B Bi
- Institut für Astronomie und Astrophysik, Universität Tübingen, Tübingen D-72076, Germany
| | - M Böttcher
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | - C Boisson
- Laboratoire Univers et Théories, Observatoire de Paris, Université Paris Sciences et Lettres, CNRS, Université de Paris, Meudon 92190, France
| | - J Bolmont
- Laboratoire de Physique Nucléaire et de Hautes Energies, Sorbonne Université, Université Paris Diderot, Université Paris Cité, Institut national de physique nucléaire et de physique des particules, Centre national de la recherche scientifique, Paris F-75252, France
| | - M de Bony de Lavergne
- Laboratoire d'Annecy de Physique des Particules, Centre national de la recherche scientifique, Institut national de physique nucléaire et de physique des particules, Université Savoie Mont Blanc, Annecy 74000, France
| | - J Borowska
- Institut für Physik, Humboldt-Universität zu Berlin, Berlin D-12489, Germany
| | - M Bouyahiaoui
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - M Breuhaus
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - R Brose
- Dublin Institute for Advanced Studies, Dublin D02 XF86, Ireland
| | - A M Brown
- Department of Physics, University of Oxford, Oxford OX1 3RH, UK
| | - F Brun
- Institute for Research on the Fundamental Laws of the Universe, Commissariat à l'énergie atomique et aux énergies alternatives, Université Paris-Saclay, Gif-sur-Yvette F-91191, France
| | - B Bruno
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - T Bulik
- Astronomical Observatory, The University of Warsaw, Warsaw 00-478, Poland
| | | | - S Caroff
- Laboratoire d'Annecy de Physique des Particules, Centre national de la recherche scientifique, Institut national de physique nucléaire et de physique des particules, Université Savoie Mont Blanc, Annecy 74000, France
| | - S Casanova
- Instytut Fizyki J[Formula: see text]drowej, Polska Akademia Nauk, Kraków 31-342, Poland
| | - R Cecil
- Institut für Experimentalphysik, Universität Hamburg, Hamburg D-22761, Germany
| | - J Celic
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - M Cerruti
- Laboratoire Astroparticule et Cosmologie, Université de Paris, Centre national de la recherche scientifique, Paris F-75013, France
| | - T Chand
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | - S Chandra
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | - A Chen
- School of Physics, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - J Chibueze
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | - O Chibueze
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | - G Cotter
- Department of Physics, University of Oxford, Oxford OX1 3RH, UK
| | - S Dai
- School of Science, Western Sydney University, Penrith NSW 2751, Australia
| | | | - A Djannati-Ataï
- Laboratoire Astroparticule et Cosmologie, Université de Paris, Centre national de la recherche scientifique, Paris F-75013, France
| | - A Dmytriiev
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | - V Doroshenko
- Institut für Astronomie und Astrophysik, Universität Tübingen, Tübingen D-72076, Germany
| | - K Egberts
- Institut für Physik und Astronomie, Universität Potsdam, Potsdam 14476, Germany
| | - S Einecke
- School of Physical Sciences, University of Adelaide, Adelaide 5005, Australia
| | - J-P Ernenwein
- Centre de Physique des Particules de Marseille, Aix Marseille Université, Centre national de la recherche scientifique, Institut national de physique nucléaire et de physique des particules, Marseille 13288, France
| | - M Filipovic
- School of Science, Western Sydney University, Penrith NSW 2751, Australia
| | - G Fontaine
- Laboratoire Leprince-Ringuet, École Polytechnique, Centre national de la recherche scientifique, Institut Polytechnique de Paris, Palaiseau F-91128, France
| | - M Füßling
- Deutsches Elektronen-Synchrotron, Zeuthen D-15738, Germany
| | - S Funk
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - S Gabici
- Laboratoire Astroparticule et Cosmologie, Université de Paris, Centre national de la recherche scientifique, Paris F-75013, France
| | - S Ghafourizadeh
- Landessternwarte, Universität Heidelberg, Heidelberg D-69117, Germany
| | - G Giavitto
- Deutsches Elektronen-Synchrotron, Zeuthen D-15738, Germany
| | - D Glawion
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - J-F Glicenstein
- Institute for Research on the Fundamental Laws of the Universe, Commissariat à l'énergie atomique et aux énergies alternatives, Université Paris-Saclay, Gif-sur-Yvette F-91191, France
| | - G Grolleron
- Laboratoire de Physique Nucléaire et de Hautes Energies, Sorbonne Université, Université Paris Diderot, Université Paris Cité, Institut national de physique nucléaire et de physique des particules, Centre national de la recherche scientifique, Paris F-75252, France
| | - L Haerer
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - J A Hinton
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - W Hofmann
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - T L Holch
- Deutsches Elektronen-Synchrotron, Zeuthen D-15738, Germany
| | - M Holler
- Institut für Astro- und Teilchenphysik, Leopold-Franzens-Universität Innsbruck, Innsbruck A-6020, Austria
| | - D Horns
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - M Jamrozy
- Obserwatorium Astronomiczne, Uniwersytet Jagielloński, Kraków 30-244, Poland
| | - F Jankowsky
- Landessternwarte, Universität Heidelberg, Heidelberg D-69117, Germany
| | - A Jardin-Blicq
- Laboratoir de de Physique des deux Infinis, Université Bordeaux, CNRS, Gradignan F-33170, France
| | - V Joshi
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - I Jung-Richardt
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - E Kasai
- Department of Physics, University of Namibia, Windhoek 10005, Namibia
| | - K Katarzyński
- Institute of Astronomy, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Torun 87-100, Poland
| | - R Khatoon
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | - B Khélifi
- Laboratoire Astroparticule et Cosmologie, Université de Paris, Centre national de la recherche scientifique, Paris F-75013, France
| | - S Klepser
- Deutsches Elektronen-Synchrotron, Zeuthen D-15738, Germany
| | - W Kluźniak
- Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Warsaw 00-716, Poland
| | - Nu Komin
- School of Physics, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - K Kosack
- Institute for Research on the Fundamental Laws of the Universe, Commissariat à l'énergie atomique et aux énergies alternatives, Université Paris-Saclay, Gif-sur-Yvette F-91191, France
| | - D Kostunin
- Deutsches Elektronen-Synchrotron, Zeuthen D-15738, Germany
| | - A Kundu
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | - R G Lang
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - S Le Stum
- Centre de Physique des Particules de Marseille, Aix Marseille Université, Centre national de la recherche scientifique, Institut national de physique nucléaire et de physique des particules, Marseille 13288, France
| | - F Leitl
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - A Lemière
- Laboratoire Astroparticule et Cosmologie, Université de Paris, Centre national de la recherche scientifique, Paris F-75013, France
| | - J-P Lenain
- Laboratoire de Physique Nucléaire et de Hautes Energies, Sorbonne Université, Université Paris Diderot, Université Paris Cité, Institut national de physique nucléaire et de physique des particules, Centre national de la recherche scientifique, Paris F-75252, France
| | - F Leuschner
- Institut für Astronomie und Astrophysik, Universität Tübingen, Tübingen D-72076, Germany
| | - T Lohse
- Institut für Physik, Humboldt-Universität zu Berlin, Berlin D-12489, Germany
| | - A Luashvili
- Laboratoire Univers et Théories, Observatoire de Paris, Université Paris Sciences et Lettres, CNRS, Université de Paris, Meudon 92190, France
| | - I Lypova
- Landessternwarte, Universität Heidelberg, Heidelberg D-69117, Germany
| | - J Mackey
- Dublin Institute for Advanced Studies, Dublin D02 XF86, Ireland
| | - D Malyshev
- Institut für Astronomie und Astrophysik, Universität Tübingen, Tübingen D-72076, Germany
| | - D Malyshev
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - V Marandon
- Institute for Research on the Fundamental Laws of the Universe, Commissariat à l'énergie atomique et aux énergies alternatives, Université Paris-Saclay, Gif-sur-Yvette F-91191, France
| | - P Marchegiani
- School of Physics, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - A Marcowith
- Laboratoire Univers et Particules de Montpellier, Université Montpellier, Centre national de la recherche scientifique, Institut national de physique nucléaire et de physique des particules, Montpellier F-34095, France
| | - G Martí-Devesa
- Institut für Astro- und Teilchenphysik, Leopold-Franzens-Universität Innsbruck, Innsbruck A-6020, Austria
| | - R Marx
- Landessternwarte, Universität Heidelberg, Heidelberg D-69117, Germany
| | - A Mehta
- Deutsches Elektronen-Synchrotron, Zeuthen D-15738, Germany
| | - A Mitchell
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - R Moderski
- Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Warsaw 00-716, Poland
| | - L Mohrmann
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - A Montanari
- Landessternwarte, Universität Heidelberg, Heidelberg D-69117, Germany
| | - E Moulin
- Institute for Research on the Fundamental Laws of the Universe, Commissariat à l'énergie atomique et aux énergies alternatives, Université Paris-Saclay, Gif-sur-Yvette F-91191, France
| | - T Murach
- Deutsches Elektronen-Synchrotron, Zeuthen D-15738, Germany
| | - K Nakashima
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - M de Naurois
- Laboratoire Leprince-Ringuet, École Polytechnique, Centre national de la recherche scientifique, Institut Polytechnique de Paris, Palaiseau F-91128, France
| | - J Niemiec
- Instytut Fizyki J[Formula: see text]drowej, Polska Akademia Nauk, Kraków 31-342, Poland
| | - A Priyana Noel
- Obserwatorium Astronomiczne, Uniwersytet Jagielloński, Kraków 30-244, Poland
| | - S Ohm
- Deutsches Elektronen-Synchrotron, Zeuthen D-15738, Germany
| | - L Olivera-Nieto
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | | | - M Ostrowski
- Obserwatorium Astronomiczne, Uniwersytet Jagielloński, Kraków 30-244, Poland
| | - S Panny
- Institut für Astro- und Teilchenphysik, Leopold-Franzens-Universität Innsbruck, Innsbruck A-6020, Austria
| | - M Panter
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - R D Parsons
- Institut für Physik, Humboldt-Universität zu Berlin, Berlin D-12489, Germany
| | - G Peron
- Laboratoire Astroparticule et Cosmologie, Université de Paris, Centre national de la recherche scientifique, Paris F-75013, France
| | - D A Prokhorov
- Gravitation and Astroparticle Physics Amsterdam, Anton Pannekoek Institute for Astronomy, University of Amsterdam, Amsterdam 1098 XH, Netherlands
| | - G Pühlhofer
- Institut für Astronomie und Astrophysik, Universität Tübingen, Tübingen D-72076, Germany
| | - M Punch
- Laboratoire Astroparticule et Cosmologie, Université de Paris, Centre national de la recherche scientifique, Paris F-75013, France
| | - A Quirrenbach
- Landessternwarte, Universität Heidelberg, Heidelberg D-69117, Germany
| | - P Reichherzer
- Institute for Research on the Fundamental Laws of the Universe, Commissariat à l'énergie atomique et aux énergies alternatives, Université Paris-Saclay, Gif-sur-Yvette F-91191, France
| | - A Reimer
- Institut für Astro- und Teilchenphysik, Leopold-Franzens-Universität Innsbruck, Innsbruck A-6020, Austria
| | - O Reimer
- Institut für Astro- und Teilchenphysik, Leopold-Franzens-Universität Innsbruck, Innsbruck A-6020, Austria
| | - H Ren
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - M Renaud
- Laboratoire Univers et Particules de Montpellier, Université Montpellier, Centre national de la recherche scientifique, Institut national de physique nucléaire et de physique des particules, Montpellier F-34095, France
| | - B Reville
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - F Rieger
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - G Rowell
- School of Physical Sciences, University of Adelaide, Adelaide 5005, Australia
| | - B Rudak
- Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Warsaw 00-716, Poland
| | - H Rueda Ricarte
- Institute for Research on the Fundamental Laws of the Universe, Commissariat à l'énergie atomique et aux énergies alternatives, Université Paris-Saclay, Gif-sur-Yvette F-91191, France
| | - E Ruiz-Velasco
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - V Sahakian
- Yerevan Physics Institute, Yerevan 375036, Armenia
| | - H Salzmann
- Institut für Astronomie und Astrophysik, Universität Tübingen, Tübingen D-72076, Germany
| | - A Santangelo
- Institut für Astronomie und Astrophysik, Universität Tübingen, Tübingen D-72076, Germany
| | - M Sasaki
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - J Schäfer
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - F Schüssler
- Institute for Research on the Fundamental Laws of the Universe, Commissariat à l'énergie atomique et aux énergies alternatives, Université Paris-Saclay, Gif-sur-Yvette F-91191, France
| | - U Schwanke
- Institut für Physik, Humboldt-Universität zu Berlin, Berlin D-12489, Germany
| | - J N S Shapopi
- Department of Physics, University of Namibia, Windhoek 10005, Namibia
| | - H Sol
- Laboratoire Univers et Théories, Observatoire de Paris, Université Paris Sciences et Lettres, CNRS, Université de Paris, Meudon 92190, France
| | - A Specovius
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - S Spencer
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - L Stawarz
- Obserwatorium Astronomiczne, Uniwersytet Jagielloński, Kraków 30-244, Poland
| | - R Steenkamp
- Department of Physics, University of Namibia, Windhoek 10005, Namibia
| | - S Steinmassl
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - C Steppa
- Institut für Physik und Astronomie, Universität Potsdam, Potsdam 14476, Germany
| | - K Streil
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - I Sushch
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | - H Suzuki
- Department of Physics, Konan University, Higashinada-ku Kobe 658-8501, Japan, Japan
| | - T Takahashi
- Kavli Institute for the Physics and Mathematics of the Universe, The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa Chiba 277-8583, Japan
| | - T Tanaka
- Department of Physics, Konan University, Higashinada-ku Kobe 658-8501, Japan, Japan
| | - A M Taylor
- Deutsches Elektronen-Synchrotron, Zeuthen D-15738, Germany
| | - R Terrier
- Laboratoire Astroparticule et Cosmologie, Université de Paris, Centre national de la recherche scientifique, Paris F-75013, France
| | - M Tsirou
- Deutsches Elektronen-Synchrotron, Zeuthen D-15738, Germany
| | - N Tsuji
- The Institute of Physical and Chemical Research (RIKEN), Wako Saitama 351-0198, Japan
| | - T Unbehaun
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - C van Eldik
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - M Vecchi
- Kapteyn Astronomical Institute, University of Groningen, Groningen 9747 AD, Netherlands
| | - J Veh
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - C Venter
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | - J Vink
- Gravitation and Astroparticle Physics Amsterdam, Anton Pannekoek Institute for Astronomy, University of Amsterdam, Amsterdam 1098 XH, Netherlands
| | - T Wach
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - S J Wagner
- Landessternwarte, Universität Heidelberg, Heidelberg D-69117, Germany
| | - F Werner
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - R White
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - A Wierzcholska
- Instytut Fizyki J[Formula: see text]drowej, Polska Akademia Nauk, Kraków 31-342, Poland
| | - Yu Wun Wong
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - M Zacharias
- Landessternwarte, Universität Heidelberg, Heidelberg D-69117, Germany
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | - D Zargaryan
- Dublin Institute for Advanced Studies, Dublin D02 XF86, Ireland
| | - A A Zdziarski
- Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Warsaw 00-716, Poland
| | - A Zech
- Dublin Institute for Advanced Studies, Dublin D02 XF86, Ireland
- Kapteyn Astronomical Institute, University of Groningen, Groningen 9747 AD, Netherlands
| | - S Zouari
- Laboratoire Astroparticule et Cosmologie, Université de Paris, Centre national de la recherche scientifique, Paris F-75013, France
| | - N Żywucka
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
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Zhang X, Brown AM, Rhubart DC. Can Resilience Buffer the Effects of Loneliness on Mental Distress Among Working-Age Adults in the United States During the COVID-19 Pandemic? A Latent Moderated Structural Modeling Analysis. Int J Behav Med 2023; 30:790-800. [PMID: 36631701 PMCID: PMC9838440 DOI: 10.1007/s12529-022-10151-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/27/2022] [Indexed: 01/13/2023]
Abstract
BACKGROUND The profound health consequences of loneliness are well-established. However, less is known about the protective factors which may alleviate the effects of loneliness on mental health especially among working-age adults amidst the COVID-19 pandemic. We draw on the social ecology of resilience and examine whether resilience factors can buffer the effects of loneliness on mental distress. METHODS Data came from the National Well-being Survey-a national study of a demographically representative sample of U.S. working-age adults (N = 4014). We used (a) structural equation models with latent variables to examine the main effects of loneliness, psychological resilience, and perceived social support on mental distress, and (b) latent moderated structural equations to estimate the latent interaction effects. RESULTS Results revealed that (a) loneliness was positively associated with mental distress and psychological resilience was negatively related to mental distress, and (b) psychological resilience and perceived social support moderated the strength of the relationship between loneliness and mental distress. CONCLUSIONS Our study highlights the importance of psychological resilience and perceived social support as two protective factors in the relationship between loneliness and mental distress. Given that loneliness significantly predicts worse mental and physical health and higher mortality, identifying protective factors that might disrupt these connections is vital. As such, public health efforts to strengthen and expand familial and community social support networks and foster psychological resilience are urgently needed to support mental health among working-age adults during additional waves of the pandemic or future similar stressors.
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Affiliation(s)
- Xiaoyan Zhang
- Department of Human Development and Family Science, Falk College of Sport and Human Dynamics, Syracuse University, Syracuse, USA.
| | - Austin McNeill Brown
- Lerner Center for Public Health Promotion, Maxwell School of Citizenship and Public Affairs, Syracuse University, Syracuse, USA
| | - Danielle C Rhubart
- Department of Biobehavioral Health, The Pennsylvania State University, State College, USA
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3
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Chen JJ, Brown AM, Garda AE, Kim E, McAvoy SA, Perni S, Rooney MK, Shiue K, Tonning KL, Warren L, Golden DW, Croke JM. Patient Education Practices and Preferences of Interprofessional Radiation Oncology Providers. Int J Radiat Oncol Biol Phys 2023; 117:e371. [PMID: 37785265 DOI: 10.1016/j.ijrobp.2023.06.2471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Patient understanding of radiotherapy (RT) processes and data regarding optimal approaches to patient education (PE) within radiation oncology (RO) are limited. Our objective was to evaluate PE practices and preferences of interprofessional RO providers to inform recommendations for delivering inclusive, accessible, and patient-centered education. MATERIALS/METHODS An anonymous 17-item online survey, approved by an ethics review board, was administered to all members of the Radiation Oncology Education Collaborative Study Group (ROECSG) between 10/5/22 to 11/23/22. Respondent demographics, provider practices/preferences, and institutional practices were collected. Qualitative items explored key strategies, challenges, and desired resources for PE. Descriptive statistics summarized survey responses. Fisher's exact test compared PE practices by provider role and PE timing. Thematic analysis was used for qualitative responses. RESULTS A total of 123 ROECSG members, including RO attendings (64%), RO trainees (21%), medical physicists (7%), physician assistants/nurses (2%), and radiation therapists (2%), completed the survey (31% response rate). Most practiced in an academic setting (86%) in North America (82%). The most common PE resources used were custom created institution-specific (61%) and electronic health system generated materials (38%). PE was delivered primarily by one-on-one teaching (72%), paper handouts (69%), and organizational websites (21%) (e.g., RTanswers.org). Almost half (41%) reported that PE practices differed based on type of clinical encounter, for example paper handouts for in-person visits and multimedia for virtual visits. The majority (86%) stated that their institution has disease site-specific PE materials, with nearly all having breast cancer materials (91%). Only 58% reported access to non-English PE materials. RO attendings/trainees were more likely than other team members to deliver PE at consultation (98% vs 71%, p = 0.03). PE practices amongst radiation oncologists differed according to the timing along the RT care path (consultation vs simulation vs first fraction, respectively): one-on-one teaching: 89% vs 49% vs 56%, p<0.01 and paper handouts: 69% vs 28% vs 16%, p<0.01. Key PE strategies included incorporating multimedia resources, personalizing delivery, and repetition at multiple timepoints by the interprofessional team. Limited time, inadequate administrative support, and lack of customized resources were identified as challenges in PE delivery. CONCLUSION Interprofessional RO providers engage in PE, with most utilizing institution-specific materials. PE practices differ according to the type of clinical encounter and timing in the RT care path. Increased adoption of multimedia materials and partnerships with patients to tailor PE resources based on language, learning styles, and cultural preferences are needed to foster high-quality, patient-centered PE delivery.
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Affiliation(s)
- J J Chen
- Department of Radiation Oncology, University of California, San Francisco, San Francisco, CA
| | | | - A E Garda
- Department of Radiation Oncology, Mayo Clinic, Rochester, MN
| | - E Kim
- Department of Radiation Oncology, Dana-Farber Cancer Institute, Boston, MA
| | - S A McAvoy
- Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, MD
| | - S Perni
- Division of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - M K Rooney
- Division of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - K Shiue
- Department of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN
| | - K L Tonning
- Department of Radiation Medicine, Oregon Health and Science University, Portland, OR
| | - L Warren
- Department of Radiation Oncology, Dana-Farber Cancer Institute, Boston, MA
| | - D W Golden
- Department of Radiation and Cellular Oncology, The University of Chicago, Chicago, IL
| | - J M Croke
- Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada
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4
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McNeill Brown A, Brennan Nanni M, LaBelle OP. Self-Esteem in 12-Step Recovery; Theoretical History, Evidence, and Implications for Future Research. Alcoholism Treatment Quarterly 2020. [DOI: 10.1080/07347324.2020.1846478] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Austin McNeill Brown
- Lerner Center for Public Health Promotion, Syracuse University, Syracuse, New York, USA
| | - Mariah Brennan Nanni
- Lerner Center for Public Health Promotion, Syracuse University, Syracuse, New York, USA
| | - Onawa P. LaBelle
- Department of Psychology, University of Windsor, Windsor, Canada
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5
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Gazaryan IG, Shchedrina VA, Klyachko NL, Zakhariants AA, Kazakov SV, Brown AM. Zinc Switch in Pig Heart Lipoamide Dehydrogenase: Steady-State and Transient Kinetic Studies of the Diaphorase Reaction. Biochemistry (Mosc) 2020; 85:908-919. [PMID: 33045951 DOI: 10.1134/s0006297920080064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Elevation of intracellular Zn2+ following ischemia contributes to cell death by affecting mitochondrial function. Zn2+ is a differential regulator of the mitochondrial enzyme lipoamide dehydrogenase (LADH) at physiological concentrations (Ka = 0.1 µM free zinc), inhibiting lipoamide and accelerating NADH dehydrogenase activities. These differential effects have been attributed to coordination of Zn2+ by LADH active-site cysteines. A detailed kinetic mechanism has now been developed for the diaphorase (NADH-dehydrogenase) reaction catalyzed by pig heart LADH using 2,6-dichlorophenol-indophenol (DCPIP) as a model quinone electron acceptor. Anaerobic stopped-flow experiments show that two-electron reduced LADH is 15-25-fold less active towards DCPIP reduction than four-electron reduced enzyme, or Zn2+-modified reduced LADH (the corresponding values of the rate constants are (6.5 ± 1.5) × 103 M-1·s-1, (9 ± 2) × 104 M-1·s-1, and (1.6 ± 0.5) × 105 M-1·s-1, respectively). Steady-state kinetic studies with different diaphorase substrates show that Zn2+ accelerates reaction rates exclusively for two-electron acceptors (duroquinone, DCPIP), but not for one-electron acceptors (benzoquinone, ubiquinone, ferricyanide). This implies that the two-electron reduced form of LADH, prevalent at low NADH levels, is a poor two-electron donor compared to the four-electron reduced or Zn2+-modified reduced LADH forms. These data suggest that zinc binding to the active-site thiols switches the enzyme from one- to two-electron donor mode. This zinc-activated switch has the potential to alter the ratio of superoxide and H2O2 generated by the LADH oxidase activity.
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Affiliation(s)
- I G Gazaryan
- Department of Cell Biology and Anatomy, New York Medical College, Valhalla, NY 10605, USA.,Department of Chemistry and Physical Sciences, Dyson College of Arts and Sciences, Pace University, Pleasantville, NY 10570, USA.,Department of Chemical Enzymology, Lomonosov Moscow State University, Moscow, 119899, Russia.,Bach Institute of Biochemistry, Federal Research Centre "Fundamentals of Biotechnology", Russian Academy of Sciences, Moscow, 119071, Russia
| | - V A Shchedrina
- Department of Chemical Enzymology, Lomonosov Moscow State University, Moscow, 119899, Russia
| | - N L Klyachko
- Department of Chemical Enzymology, Lomonosov Moscow State University, Moscow, 119899, Russia.,Derzhavin Tambov State University, Tambov, 392000, Russia
| | - A A Zakhariants
- Bach Institute of Biochemistry, Federal Research Centre "Fundamentals of Biotechnology", Russian Academy of Sciences, Moscow, 119071, Russia.,Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia
| | - S V Kazakov
- Department of Chemistry and Physical Sciences, Dyson College of Arts and Sciences, Pace University, Pleasantville, NY 10570, USA
| | - A M Brown
- Department of Cell Biology and Anatomy, New York Medical College, Valhalla, NY 10605, USA.
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6
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Abstract
Sexual displays enriched by object carrying serve to increase individual male fitness, yet are uncommon phenomena in the animal kingdom. While they have been documented in a variety of taxa, primarily birds, they are rare outside non-human mammals. Here, we document marine sponge presenting associated with visual and acoustic posturing found in several, geographically widespread populations of Australian humpback dolphins (Sousa sahulensis) over ten years of observation. Only adult males presented marine sponges, typically doing so in the presence of sexually mature females, although social groups predominantly consisted of mixed age and sex classes. Male humpback dolphins appear to be using sponges for signalling purposes in multi-modal sexual displays. Further, based on limited behavioural and genetic data, we hypothesise that pairs of adult male Sousa form at least temporary coalitions or alliances. The use of objects in sexual displays by non-human mammals is rare and, moreover, cooperation between males in the pursuit of an indivisible resource is an evolutionary hurdle relatively few species have overcome. These findings suggest a hitherto unrecognised level of social complexity in humpback dolphins.
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Affiliation(s)
- S J Allen
- School of Biological Sciences and Oceans Institute, University of Western Australia, Crawley, Western Australia, 6009, Australia. .,Department of Anthropology, University of Zurich, CH-8057, Zurich, Switzerland. .,Cetacean Research Unit, School of Veterinary and Life Sciences, Murdoch University, Murdoch, Western Australia, 6150, Australia.
| | - S L King
- School of Biological Sciences and Oceans Institute, University of Western Australia, Crawley, Western Australia, 6009, Australia
| | - M Krützen
- Department of Anthropology, University of Zurich, CH-8057, Zurich, Switzerland
| | - A M Brown
- Cetacean Research Unit, School of Veterinary and Life Sciences, Murdoch University, Murdoch, Western Australia, 6150, Australia.,Hartley Anderson Ltd, 36 Regent Quay, Aberdeen, AB11 5BE, United Kingdom
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7
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Aartsen MG, Abraham K, Ackermann M, Adams J, Aguilar JA, Ahlers M, Ahrens M, Altmann D, Anderson T, Archinger M, Arguelles C, Arlen TC, Auffenberg J, Bai X, Barwick SW, Baum V, Bay R, Beatty JJ, Tjus JB, Becker KH, Beiser E, BenZvi S, Berghaus P, Berley D, Bernardini E, Bernhard A, Besson DZ, Binder G, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohm C, Börner M, Bos F, Bose D, Böser S, Botner O, Braun J, Brayeur L, Bretz HP, Brown AM, Buzinsky N, Casey J, Casier M, Cheung E, Chirkin D, Christov A, Christy B, Clark K, Classen L, Coenders S, Cowen DF, Silva AHC, Daughhetee J, Davis JC, Day M, de André JPAM, De Clercq C, Dembinski H, De Ridder S, Desiati P, de Vries KD, de Wasseige G, de With M, DeYoung T, Díaz-Vélez JC, Dumm JP, Dunkman M, Eagan R, Eberhardt B, Ehrhardt T, Eichmann B, Euler S, Evenson PA, Fadiran O, Fahey S, Fazely AR, Fedynitch A, Feintzeig J, Felde J, Filimonov K, Finley C, Fischer-Wasels T, Flis S, Fuchs T, Glagla M, Gaisser TK, Gaior R, Gallagher J, Gerhardt L, Ghorbani K, Gier D, Gladstone L, Glüsenkamp T, Goldschmidt A, Golup G, Gonzalez JG, Goodman JA, Góra D, Grant D, Gretskov P, Groh JC, Groß A, Ha C, Haack C, Ismail AH, Hallgren A, Halzen F, Hansmann B, Hanson K, Hebecker D, Heereman D, Helbing K, Hellauer R, Hellwig D, Hickford S, Hignight J, Hill GC, Hoffman KD, Hoffmann R, Holzapfe K, Homeier A, Hoshina K, Huang F, Huber M, Huelsnitz W, Hulth PO, Hultqvist K, In S, Ishihara A, Jacobi E, Japaridze GS, Jero K, Jurkovic M, Kaminsky B, Kappes A, Karg T, Karle A, Kauer M, Keivani A, Kelley JL, Kemp J, Kheirandish A, Kiryluk J, Kläs J, Klein SR, Kohnen G, Kolanoski H, Konietz R, Koob A, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Krings K, Kroll G, Kroll M, Kunnen J, Kurahashi N, Kuwabara T, Labare M, Lanfranchi JL, Larson MJ, Lesiak-Bzdak M, Leuermann M, Leuner J, Lünemann J, Madsen J, Maggi G, Mahn KBM, Maruyama R, Mase K, Matis HS, Maunu R, McNally F, Meagher K, Medici M, Meli A, Menne T, Merino G, Meures T, Miarecki S, Middell E, Middlemas E, Miller J, Mohrmann L, Montaruli T, Morse R, Nahnhauer R, Naumann U, Niederhausen H, Nowicki SC, Nygren DR, Obertacke A, Olivas A, Omairat A, O'Murchadha A, Palczewski T, Paul L, Pepper JA, de Los Heros CP, Pfendner C, Pieloth D, Pinat E, Posselt J, Price PB, Przybylski GT, Pütz J, Quinnan M, Rädel L, Rameez M, Rawlins K, Redl P, Reimann R, Relich M, Resconi E, Rhode W, Richman M, Richter S, Riedel B, Robertson S, Rongen M, Rott C, Ruhe T, Ruzybayev B, Ryckbosch D, Saba SM, Sabbatini L, Sander HG, Sandrock A, Sandroos J, Sarkar S, Schatto K, Scheriau F, Schimp M, Schmidt T, Schmitz M, Schoenen S, Schöneberg S, Schönwald A, Schukraft A, Schulte L, Seckel D, Seunarine S, Shanidze R, Smith MWE, Soldin D, Spiczak GM, Spiering C, Stahlberg M, Stamatikos M, Stanev T, Stanisha NA, Stasik A, Stezelberger T, Stokstad RG, Stößl A, Strahler EA, Ström R, Strotjohann NL, Sullivan GW, Sutherland M, Taavola H, Taboada I, Ter-Antonyan S, Terliuk A, Tešić G, Tilav S, Toale PA, Tobin MN, Tosi D, Tselengidou M, Unger E, Usner M, Vallecorsa S, van Eijndhoven N, Vandenbroucke J, van Santen J, Vanheule S, Veenkamp J, Vehring M, Voge M, Vraeghe M, Walck C, Wallraff M, Wandkowsky N, Weaver C, Wendt C, Westerhoff S, Whelan BJ, Whitehorn N, Wichary C, Wiebe K, Wiebusch CH, Wille L, Williams DR, Wissing H, Wolf M, Wood TR, Woschnagg K, Xu DL, Xu XW, Xu Y, Yanez JP, Yodh G, Yoshida S, Zarzhitsky P, Zoll M. Evidence for Astrophysical Muon Neutrinos from the Northern Sky with IceCube. Phys Rev Lett 2015; 115:081102. [PMID: 26340177 DOI: 10.1103/physrevlett.115.081102] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Indexed: 05/16/2023]
Abstract
Results from the IceCube Neutrino Observatory have recently provided compelling evidence for the existence of a high energy astrophysical neutrino flux utilizing a dominantly Southern Hemisphere data set consisting primarily of ν(e) and ν(τ) charged-current and neutral-current (cascade) neutrino interactions. In the analysis presented here, a data sample of approximately 35,000 muon neutrinos from the Northern sky is extracted from data taken during 659.5 days of live time recorded between May 2010 and May 2012. While this sample is composed primarily of neutrinos produced by cosmic ray interactions in Earth's atmosphere, the highest energy events are inconsistent with a hypothesis of solely terrestrial origin at 3.7σ significance. These neutrinos can, however, be explained by an astrophysical flux per neutrino flavor at a level of Φ(E(ν))=9.9(-3.4)(+3.9)×10(-19) GeV(-1) cm(-2) sr(-1) s(-1)(E(ν)/100 TeV(-2), consistent with IceCube's Southern-Hemisphere-dominated result. Additionally, a fit for an astrophysical flux with an arbitrary spectral index is performed. We find a spectral index of 2.2(-0.2)(+0.2), which is also in good agreement with the Southern Hemisphere result.
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Affiliation(s)
- M G Aartsen
- School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - K Abraham
- Technische Universität München, D-85748 Garching, Germany
| | | | - J Adams
- Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - J A Aguilar
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - M Ahlers
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Ahrens
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - D Altmann
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, D-91058 Erlangen, Germany
| | - T Anderson
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - M Archinger
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - C Arguelles
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - T C Arlen
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - J Auffenberg
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - X Bai
- Physics Department, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
| | - S W Barwick
- Department of Physics and Astronomy, University of California, Irvine, California 92697, USA
| | - V Baum
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - R Bay
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - J J Beatty
- Department of Physics and Center for Cosmology and Astro-Particle Physics, Ohio State University, Columbus, Ohio 43210, USA
- Department of Astronomy, Ohio State University, Columbus, Ohio 43210, USA
| | - J Becker Tjus
- Fakultät für Physik and Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - K-H Becker
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - E Beiser
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S BenZvi
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | | - D Berley
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | | | - A Bernhard
- Technische Universität München, D-85748 Garching, Germany
| | - D Z Besson
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, USA
| | - G Binder
- Department of Physics, University of California, Berkeley, California 94720, USA
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - D Bindig
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - M Bissok
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - E Blaufuss
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - J Blumenthal
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - D J Boersma
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - C Bohm
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - M Börner
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - F Bos
- Fakultät für Physik and Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - D Bose
- Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea
| | - S Böser
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - O Botner
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - J Braun
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - L Brayeur
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | | | - A M Brown
- Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - N Buzinsky
- Department of Physics, University of Alberta, Edmonton, Alberta, Canada, T6G 2E1
| | - J Casey
- School of Physics and Center for Relativistic Astrophysics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - M Casier
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - E Cheung
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - D Chirkin
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - A Christov
- Département de physique nucléaire et corpusculaire, Université de Genève, CH-1211 Genève, Switzerland
| | - B Christy
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - K Clark
- Department of Physics, University of Toronto, Toronto, Ontario, Canada, M5S 1A7
| | - L Classen
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, D-91058 Erlangen, Germany
| | - S Coenders
- Technische Universität München, D-85748 Garching, Germany
| | - D F Cowen
- Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | | | - J Daughhetee
- School of Physics and Center for Relativistic Astrophysics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - J C Davis
- Department of Physics and Center for Cosmology and Astro-Particle Physics, Ohio State University, Columbus, Ohio 43210, USA
| | - M Day
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J P A M de André
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - C De Clercq
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - H Dembinski
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - S De Ridder
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - P Desiati
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - K D de Vries
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - G de Wasseige
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - M de With
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - T DeYoung
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - J C Díaz-Vélez
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J P Dumm
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - M Dunkman
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - R Eagan
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - B Eberhardt
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - T Ehrhardt
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - B Eichmann
- Fakultät für Physik and Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - S Euler
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - P A Evenson
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - O Fadiran
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S Fahey
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - A R Fazely
- Department of Physics, Southern University, Baton Rouge, Louisiana 70813, USA
| | - A Fedynitch
- Fakultät für Physik and Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - J Feintzeig
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J Felde
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - K Filimonov
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - C Finley
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - T Fischer-Wasels
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - S Flis
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - T Fuchs
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - M Glagla
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - T K Gaisser
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - R Gaior
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | - J Gallagher
- Department of Astronomy, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - L Gerhardt
- Department of Physics, University of California, Berkeley, California 94720, USA
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - K Ghorbani
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - D Gier
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - L Gladstone
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | | - A Goldschmidt
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - G Golup
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - J G Gonzalez
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - J A Goodman
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - D Góra
- DESY, D-15735 Zeuthen, Germany
| | - D Grant
- Department of Physics, University of Alberta, Edmonton, Alberta, Canada, T6G 2E1
| | - P Gretskov
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - J C Groh
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - A Groß
- Technische Universität München, D-85748 Garching, Germany
| | - C Ha
- Department of Physics, University of California, Berkeley, California 94720, USA
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - C Haack
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - A Haj Ismail
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - A Hallgren
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - F Halzen
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - B Hansmann
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - K Hanson
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - D Hebecker
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - D Heereman
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - K Helbing
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - R Hellauer
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - D Hellwig
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - S Hickford
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - J Hignight
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - G C Hill
- School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - K D Hoffman
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - R Hoffmann
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - K Holzapfe
- Technische Universität München, D-85748 Garching, Germany
| | - A Homeier
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - K Hoshina
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - F Huang
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - M Huber
- Technische Universität München, D-85748 Garching, Germany
| | - W Huelsnitz
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - P O Hulth
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - K Hultqvist
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - S In
- Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea
| | - A Ishihara
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | | | - G S Japaridze
- CTSPS, Clark-Atlanta University, Atlanta, Georgia 30314, USA
| | - K Jero
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Jurkovic
- Technische Universität München, D-85748 Garching, Germany
| | | | - A Kappes
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, D-91058 Erlangen, Germany
| | - T Karg
- DESY, D-15735 Zeuthen, Germany
| | - A Karle
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Kauer
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
- Department of Physics, Yale University, New Haven, Connecticut 06520, USA
| | - A Keivani
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - J L Kelley
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J Kemp
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - A Kheirandish
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J Kiryluk
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
| | - J Kläs
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - S R Klein
- Department of Physics, University of California, Berkeley, California 94720, USA
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - G Kohnen
- Université de Mons, 7000 Mons, Belgium
| | - H Kolanoski
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - R Konietz
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - A Koob
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - L Köpke
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - C Kopper
- Department of Physics, University of Alberta, Edmonton, Alberta, Canada, T6G 2E1
| | - S Kopper
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - D J Koskinen
- Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - M Kowalski
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
- DESY, D-15735 Zeuthen, Germany
| | - K Krings
- Technische Universität München, D-85748 Garching, Germany
| | - G Kroll
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - M Kroll
- Fakultät für Physik and Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - J Kunnen
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - N Kurahashi
- Department of Physics, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, USA
| | - T Kuwabara
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | - M Labare
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - J L Lanfranchi
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - M J Larson
- Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - M Lesiak-Bzdak
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
| | - M Leuermann
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - J Leuner
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - J Lünemann
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - J Madsen
- Department of Physics, University of Wisconsin, River Falls, Wisconsin 54022, USA
| | - G Maggi
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - K B M Mahn
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - R Maruyama
- Department of Physics, Yale University, New Haven, Connecticut 06520, USA
| | - K Mase
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | - H S Matis
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - R Maunu
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - F McNally
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - K Meagher
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - M Medici
- Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - A Meli
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - T Menne
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - G Merino
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - T Meures
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - S Miarecki
- Department of Physics, University of California, Berkeley, California 94720, USA
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | | | - E Middlemas
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J Miller
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | | | - T Montaruli
- Département de physique nucléaire et corpusculaire, Université de Genève, CH-1211 Genève, Switzerland
| | - R Morse
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | | - U Naumann
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - H Niederhausen
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
| | - S C Nowicki
- Department of Physics, University of Alberta, Edmonton, Alberta, Canada, T6G 2E1
| | - D R Nygren
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - A Obertacke
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - A Olivas
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - A Omairat
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - A O'Murchadha
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - T Palczewski
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - L Paul
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - J A Pepper
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - C Pérez de Los Heros
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - C Pfendner
- Department of Physics and Center for Cosmology and Astro-Particle Physics, Ohio State University, Columbus, Ohio 43210, USA
| | - D Pieloth
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - E Pinat
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - J Posselt
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - P B Price
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - G T Przybylski
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - J Pütz
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - M Quinnan
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - L Rädel
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - M Rameez
- Département de physique nucléaire et corpusculaire, Université de Genève, CH-1211 Genève, Switzerland
| | - K Rawlins
- Department of Physics and Astronomy, University of Alaska Anchorage, 3211 Providence Drive, Anchorage, Alaska 99508, USA
| | - P Redl
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - R Reimann
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - M Relich
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | - E Resconi
- Technische Universität München, D-85748 Garching, Germany
| | - W Rhode
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - M Richman
- Department of Physics, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, USA
| | - S Richter
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - B Riedel
- Department of Physics, University of Alberta, Edmonton, Alberta, Canada, T6G 2E1
| | - S Robertson
- School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - M Rongen
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - C Rott
- Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea
| | - T Ruhe
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - B Ruzybayev
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - D Ryckbosch
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - S M Saba
- Fakultät für Physik and Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - L Sabbatini
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - H-G Sander
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - A Sandrock
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - J Sandroos
- Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - S Sarkar
- Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark
- Department of Physics, University of Oxford, 1 Keble Road, Oxford OX1 3NP, United Kingdom
| | - K Schatto
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - F Scheriau
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - M Schimp
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - T Schmidt
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - M Schmitz
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - S Schoenen
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - S Schöneberg
- Fakultät für Physik and Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | | | - A Schukraft
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - L Schulte
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - D Seckel
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - S Seunarine
- Department of Physics, University of Wisconsin, River Falls, Wisconsin 54022, USA
| | | | - M W E Smith
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - D Soldin
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - G M Spiczak
- Department of Physics, University of Wisconsin, River Falls, Wisconsin 54022, USA
| | | | - M Stahlberg
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - M Stamatikos
- Department of Physics and Center for Cosmology and Astro-Particle Physics, Ohio State University, Columbus, Ohio 43210, USA
| | - T Stanev
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - N A Stanisha
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | | | - T Stezelberger
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - R G Stokstad
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - A Stößl
- DESY, D-15735 Zeuthen, Germany
| | - E A Strahler
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - R Ström
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | | | - G W Sullivan
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - M Sutherland
- Department of Physics and Center for Cosmology and Astro-Particle Physics, Ohio State University, Columbus, Ohio 43210, USA
| | - H Taavola
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - I Taboada
- School of Physics and Center for Relativistic Astrophysics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - S Ter-Antonyan
- Department of Physics, Southern University, Baton Rouge, Louisiana 70813, USA
| | | | - G Tešić
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - S Tilav
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - P A Toale
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - M N Tobin
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - D Tosi
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Tselengidou
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, D-91058 Erlangen, Germany
| | - E Unger
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - M Usner
- DESY, D-15735 Zeuthen, Germany
| | - S Vallecorsa
- Département de physique nucléaire et corpusculaire, Université de Genève, CH-1211 Genève, Switzerland
| | - N van Eijndhoven
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - J Vandenbroucke
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J van Santen
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S Vanheule
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - J Veenkamp
- Technische Universität München, D-85748 Garching, Germany
| | - M Vehring
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - M Voge
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - M Vraeghe
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - C Walck
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - M Wallraff
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - N Wandkowsky
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - C Weaver
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - C Wendt
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S Westerhoff
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - B J Whelan
- School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - N Whitehorn
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - C Wichary
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - K Wiebe
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - C H Wiebusch
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - L Wille
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - D R Williams
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - H Wissing
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - M Wolf
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - T R Wood
- Department of Physics, University of Alberta, Edmonton, Alberta, Canada, T6G 2E1
| | - K Woschnagg
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - D L Xu
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - X W Xu
- Department of Physics, Southern University, Baton Rouge, Louisiana 70813, USA
| | - Y Xu
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
| | | | - G Yodh
- Department of Physics and Astronomy, University of California, Irvine, California 92697, USA
| | - S Yoshida
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | - P Zarzhitsky
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - M Zoll
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
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Aartsen MG, Ackermann M, Adams J, Aguilar JA, Ahlers M, Ahrens M, Altmann D, Anderson T, Arguelles C, Arlen TC, Auffenberg J, Bai X, Barwick SW, Baum V, Bay R, Beatty JJ, Becker Tjus J, Becker KH, BenZvi S, Berghaus P, Berley D, Bernardini E, Bernhard A, Besson DZ, Binder G, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohm C, Bos F, Bose D, Böser S, Botner O, Brayeur L, Bretz HP, Brown AM, Buzinsky N, Casey J, Casier M, Cheung E, Chirkin D, Christov A, Christy B, Clark K, Classen L, Clevermann F, Coenders S, Cowen DF, Cruz Silva AH, Daughhetee J, Davis JC, Day M, de André JPAM, De Clercq C, Dembinski H, De Ridder S, Desiati P, de Vries KD, de With M, DeYoung T, Díaz-Vélez JC, Dumm JP, Dunkman M, Eagan R, Eberhardt B, Ehrhardt T, Eichmann B, Eisch J, Euler S, Evenson PA, Fadiran O, Fazely AR, Fedynitch A, Feintzeig J, Felde J, Filimonov K, Finley C, Fischer-Wasels T, Flis S, Frantzen K, Fuchs T, Gaisser TK, Gaior R, Gallagher J, Gerhardt L, Gier D, Gladstone L, Glüsenkamp T, Goldschmidt A, Golup G, Gonzalez JG, Goodman JA, Góra D, Grant D, Gretskov P, Groh JC, Groß A, Ha C, Haack C, Haj Ismail A, Hallen P, Hallgren A, Halzen F, Hanson K, Hebecker D, Heereman D, Heinen D, Helbing K, Hellauer R, Hellwig D, Hickford S, Hill GC, Hoffman KD, Hoffmann R, Homeier A, Hoshina K, Huang F, Huelsnitz W, Hulth PO, Hultqvist K, Ishihara A, Jacobi E, Jacobsen J, Japaridze GS, Jero K, Jurkovic M, Kaminsky B, Kappes A, Karg T, Karle A, Kauer M, Keivani A, Kelley JL, Kheirandish A, Kiryluk J, Kläs J, Klein SR, Köhne JH, Kohnen G, Kolanoski H, Koob A, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Kriesten A, Krings K, Kroll G, Kroll M, Kunnen J, Kurahashi N, Kuwabara T, Labare M, Lanfranchi JL, Larsen DT, Larson MJ, Lesiak-Bzdak M, Leuermann M, Lünemann J, Madsen J, Maggi G, Maruyama R, Mase K, Matis HS, Maunu R, McNally F, Meagher K, Medici M, Meli A, Meures T, Miarecki S, Middell E, Middlemas E, Milke N, Miller J, Mohrmann L, Montaruli T, Morse R, Nahnhauer R, Naumann U, Niederhausen H, Nowicki SC, Nygren DR, Obertacke A, Olivas A, Omairat A, O'Murchadha A, Palczewski T, Paul L, Penek Ö, Pepper JA, Pérez de los Heros C, Pfendner C, Pieloth D, Pinat E, Posselt J, Price PB, Przybylski GT, Pütz J, Quinnan M, Rädel L, Rameez M, Rawlins K, Redl P, Rees I, Reimann R, Relich M, Resconi E, Rhode W, Richman M, Riedel B, Robertson S, Rodrigues JP, Rongen M, Rott C, Ruhe T, Ruzybayev B, Ryckbosch D, Saba SM, Sander HG, Sandroos J, Santander M, Sarkar S, Schatto K, Scheriau F, Schmidt T, Schmitz M, Schoenen S, Schöneberg S, Schönwald A, Schukraft A, Schulte L, Schulz O, Seckel D, Sestayo Y, Seunarine S, Shanidze R, Smith MWE, Soldin D, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stanisha NA, Stasik A, Stezelberger T, Stokstad RG, Stößl A, Strahler EA, Ström R, Strotjohann NL, Sullivan GW, Taavola H, Taboada I, Tamburro A, Ter-Antonyan S, Terliuk A, Tešić G, Tilav S, Toale PA, Tobin MN, Tosi D, Tselengidou M, Unger E, Usner M, Vallecorsa S, van Eijndhoven N, Vandenbroucke J, van Santen J, Vanheule S, Vehring M, Voge M, Vraeghe M, Walck C, Wallraff M, Weaver C, Wellons M, Wendt C, Westerhoff S, Whelan BJ, Whitehorn N, Wichary C, Wiebe K, Wiebusch CH, Williams DR, Wissing H, Wolf M, Wood TR, Woschnagg K, Xu DL, Xu XW, Xu Y, Yanez JP, Yodh G, Yoshida S, Zarzhitsky P, Ziemann J, Zoll M. Flavor Ratio of Astrophysical Neutrinos above 35 TeV in IceCube. Phys Rev Lett 2015; 114:171102. [PMID: 25978221 DOI: 10.1103/physrevlett.114.171102] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Indexed: 06/04/2023]
Abstract
A diffuse flux of astrophysical neutrinos above 100 TeV has been observed at the IceCube Neutrino Observatory. Here we extend this analysis to probe the astrophysical flux down to 35 TeV and analyze its flavor composition by classifying events as showers or tracks. Taking advantage of lower atmospheric backgrounds for showerlike events, we obtain a shower-biased sample containing 129 showers and 8 tracks collected in three years from 2010 to 2013. We demonstrate consistency with the (fe:fμ:fτ)⊕≈(1:1:1)⊕ flavor ratio at Earth commonly expected from the averaged oscillations of neutrinos produced by pion decay in distant astrophysical sources. Limits are placed on nonstandard flavor compositions that cannot be produced by averaged neutrino oscillations but could arise in exotic physics scenarios. A maximally tracklike composition of (0:1:0)⊕ is excluded at 3.3σ, and a purely showerlike composition of (1:0:0)⊕ is excluded at 2.3σ.
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Affiliation(s)
- M G Aartsen
- School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia 5005, Australia
| | | | - J Adams
- Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - J A Aguilar
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - M Ahlers
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Ahrens
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - D Altmann
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, D-91058 Erlangen, Germany
| | - T Anderson
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - C Arguelles
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - T C Arlen
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - J Auffenberg
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - X Bai
- Physics Department, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
| | - S W Barwick
- Department of Physics and Astronomy, University of California, Irvine, California 92697, USA
| | - V Baum
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - R Bay
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - J J Beatty
- Department of Physics and Center for Cosmology and Astro-Particle Physics, Ohio State University, Columbus, Ohio 43210, USA
- Department of Astronomy, Ohio State University, Columbus, Ohio 43210, USA
| | - J Becker Tjus
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - K-H Becker
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - S BenZvi
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | | - D Berley
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | | | - A Bernhard
- Technische Universität München, D-85748 Garching, Germany
| | - D Z Besson
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, USA
| | - G Binder
- Department of Physics, University of California, Berkeley, California 94720, USA
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - D Bindig
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - M Bissok
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - E Blaufuss
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - J Blumenthal
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - D J Boersma
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - C Bohm
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - F Bos
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - D Bose
- Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea
| | - S Böser
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - O Botner
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - L Brayeur
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | | | - A M Brown
- Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - N Buzinsky
- Department of Physics, University of Alberta, Edmonton, Alberta, Canada T6G 2E1
| | - J Casey
- School of Physics and Center for Relativistic Astrophysics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - M Casier
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - E Cheung
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - D Chirkin
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - A Christov
- Département de physique nucléaire et corpusculaire, Université de Genève, CH-1211 Genève, Switzerland
| | - B Christy
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - K Clark
- Department of Physics, University of Toronto, Toronto, Ontario, Canada, M5S 1A7
| | - L Classen
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, D-91058 Erlangen, Germany
| | - F Clevermann
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - S Coenders
- Technische Universität München, D-85748 Garching, Germany
| | - D F Cowen
- Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | | | - J Daughhetee
- School of Physics and Center for Relativistic Astrophysics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - J C Davis
- Department of Physics and Center for Cosmology and Astro-Particle Physics, Ohio State University, Columbus, Ohio 43210, USA
| | - M Day
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J P A M de André
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - C De Clercq
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - H Dembinski
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - S De Ridder
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - P Desiati
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - K D de Vries
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - M de With
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - T DeYoung
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - J C Díaz-Vélez
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J P Dumm
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - M Dunkman
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - R Eagan
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - B Eberhardt
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - T Ehrhardt
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - B Eichmann
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - J Eisch
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S Euler
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - P A Evenson
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - O Fadiran
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - A R Fazely
- Department of Physics, Southern University, Baton Rouge, Louisiana 70813, USA
| | - A Fedynitch
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - J Feintzeig
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J Felde
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - K Filimonov
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - C Finley
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - T Fischer-Wasels
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - S Flis
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - K Frantzen
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - T Fuchs
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - T K Gaisser
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - R Gaior
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | - J Gallagher
- Department of Astronomy, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - L Gerhardt
- Department of Physics, University of California, Berkeley, California 94720, USA
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - D Gier
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - L Gladstone
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | | - A Goldschmidt
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - G Golup
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - J G Gonzalez
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - J A Goodman
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - D Góra
- DESY, D-15735 Zeuthen, Germany
| | - D Grant
- Department of Physics, University of Alberta, Edmonton, Alberta, Canada T6G 2E1
| | - P Gretskov
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - J C Groh
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - A Groß
- Technische Universität München, D-85748 Garching, Germany
| | - C Ha
- Department of Physics, University of California, Berkeley, California 94720, USA
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - C Haack
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - A Haj Ismail
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - P Hallen
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - A Hallgren
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - F Halzen
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - K Hanson
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - D Hebecker
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - D Heereman
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - D Heinen
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - K Helbing
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - R Hellauer
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - D Hellwig
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - S Hickford
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - G C Hill
- School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - K D Hoffman
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - R Hoffmann
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - A Homeier
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - K Hoshina
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - F Huang
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - W Huelsnitz
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - P O Hulth
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - K Hultqvist
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - A Ishihara
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | | | - J Jacobsen
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - G S Japaridze
- CTSPS, Clark-Atlanta University, Atlanta, Georgia 30314, USA
| | - K Jero
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Jurkovic
- Technische Universität München, D-85748 Garching, Germany
| | | | - A Kappes
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, D-91058 Erlangen, Germany
| | - T Karg
- DESY, D-15735 Zeuthen, Germany
| | - A Karle
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Kauer
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
- Department of Physics, Yale University, New Haven, Connecticut 06520, USA
| | - A Keivani
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - J L Kelley
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - A Kheirandish
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J Kiryluk
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
| | - J Kläs
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - S R Klein
- Department of Physics, University of California, Berkeley, California 94720, USA
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - J-H Köhne
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - G Kohnen
- Université de Mons, 7000 Mons, Belgium
| | - H Kolanoski
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - A Koob
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - L Köpke
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - C Kopper
- Department of Physics, University of Alberta, Edmonton, Alberta, Canada T6G 2E1
| | - S Kopper
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - D J Koskinen
- Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - M Kowalski
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
- DESY, D-15735 Zeuthen, Germany
| | - A Kriesten
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - K Krings
- Technische Universität München, D-85748 Garching, Germany
| | - G Kroll
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - M Kroll
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - J Kunnen
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - N Kurahashi
- Department of Physics, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, USA
| | - T Kuwabara
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | - M Labare
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - J L Lanfranchi
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - D T Larsen
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M J Larson
- Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - M Lesiak-Bzdak
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
| | - M Leuermann
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - J Lünemann
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - J Madsen
- Department of Physics, University of Wisconsin, River Falls, Wisconsin 54022, USA
| | - G Maggi
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - R Maruyama
- Department of Physics, Yale University, New Haven, Connecticut 06520, USA
| | - K Mase
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | - H S Matis
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - R Maunu
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - F McNally
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - K Meagher
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - M Medici
- Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - A Meli
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - T Meures
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - S Miarecki
- Department of Physics, University of California, Berkeley, California 94720, USA
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | | | - E Middlemas
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - N Milke
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - J Miller
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | | | - T Montaruli
- Département de physique nucléaire et corpusculaire, Université de Genève, CH-1211 Genève, Switzerland
| | - R Morse
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | | - U Naumann
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - H Niederhausen
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
| | - S C Nowicki
- Department of Physics, University of Alberta, Edmonton, Alberta, Canada T6G 2E1
| | - D R Nygren
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - A Obertacke
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - A Olivas
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - A Omairat
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - A O'Murchadha
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - T Palczewski
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - L Paul
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - Ö Penek
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - J A Pepper
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - C Pérez de los Heros
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - C Pfendner
- Department of Physics and Center for Cosmology and Astro-Particle Physics, Ohio State University, Columbus, Ohio 43210, USA
| | - D Pieloth
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - E Pinat
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - J Posselt
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - P B Price
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - G T Przybylski
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - J Pütz
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - M Quinnan
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - L Rädel
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - M Rameez
- Département de physique nucléaire et corpusculaire, Université de Genève, CH-1211 Genève, Switzerland
| | - K Rawlins
- Department of Physics and Astronomy, University of Alaska Anchorage, 3211 Providence Drive, Anchorage, Alaska 99508, USA
| | - P Redl
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - I Rees
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - R Reimann
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - M Relich
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | - E Resconi
- Technische Universität München, D-85748 Garching, Germany
| | - W Rhode
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - M Richman
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - B Riedel
- Department of Physics, University of Alberta, Edmonton, Alberta, Canada T6G 2E1
| | - S Robertson
- School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - J P Rodrigues
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Rongen
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - C Rott
- Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea
| | - T Ruhe
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - B Ruzybayev
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - D Ryckbosch
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - S M Saba
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - H-G Sander
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - J Sandroos
- Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - M Santander
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S Sarkar
- Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark
- Department of Physics, University of Oxford, 1 Keble Road, Oxford OX1 3NP, United Kingdom
| | - K Schatto
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - F Scheriau
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - T Schmidt
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - M Schmitz
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - S Schoenen
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - S Schöneberg
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | | | - A Schukraft
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - L Schulte
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - O Schulz
- Technische Universität München, D-85748 Garching, Germany
| | - D Seckel
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - Y Sestayo
- Technische Universität München, D-85748 Garching, Germany
| | - S Seunarine
- Department of Physics, University of Wisconsin, River Falls, Wisconsin 54022, USA
| | | | - M W E Smith
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - D Soldin
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - G M Spiczak
- Department of Physics, University of Wisconsin, River Falls, Wisconsin 54022, USA
| | | | - M Stamatikos
- Department of Physics and Center for Cosmology and Astro-Particle Physics, Ohio State University, Columbus, Ohio 43210, USA
| | - T Stanev
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - N A Stanisha
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | | | - T Stezelberger
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - R G Stokstad
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - A Stößl
- DESY, D-15735 Zeuthen, Germany
| | - E A Strahler
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - R Ström
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | | | - G W Sullivan
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - H Taavola
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - I Taboada
- School of Physics and Center for Relativistic Astrophysics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - A Tamburro
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - S Ter-Antonyan
- Department of Physics, Southern University, Baton Rouge, Louisiana 70813, USA
| | | | - G Tešić
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - S Tilav
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - P A Toale
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - M N Tobin
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - D Tosi
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Tselengidou
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, D-91058 Erlangen, Germany
| | - E Unger
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - M Usner
- DESY, D-15735 Zeuthen, Germany
| | - S Vallecorsa
- Département de physique nucléaire et corpusculaire, Université de Genève, CH-1211 Genève, Switzerland
| | - N van Eijndhoven
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - J Vandenbroucke
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J van Santen
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S Vanheule
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - M Vehring
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - M Voge
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - M Vraeghe
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - C Walck
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - M Wallraff
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - Ch Weaver
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Wellons
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - C Wendt
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S Westerhoff
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - B J Whelan
- School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - N Whitehorn
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - C Wichary
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - K Wiebe
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - C H Wiebusch
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - D R Williams
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - H Wissing
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - M Wolf
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - T R Wood
- Department of Physics, University of Alberta, Edmonton, Alberta, Canada T6G 2E1
| | - K Woschnagg
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - D L Xu
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - X W Xu
- Department of Physics, Southern University, Baton Rouge, Louisiana 70813, USA
| | - Y Xu
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
| | | | - G Yodh
- Department of Physics and Astronomy, University of California, Irvine, California 92697, USA
| | - S Yoshida
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | - P Zarzhitsky
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - J Ziemann
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - M Zoll
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
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Aartsen MG, Ackermann M, Adams J, Aguilar JA, Ahlers M, Ahrens M, Altmann D, Anderson T, Arguelles C, Arlen TC, Auffenberg J, Bai X, Barwick SW, Baum V, Beatty JJ, Becker Tjus J, Becker KH, BenZvi S, Berghaus P, Berley D, Bernardini E, Bernhard A, Besson DZ, Binder G, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohm C, Bose D, Böser S, Botner O, Brayeur L, Bretz HP, Brown AM, Casey J, Casier M, Chirkin D, Christov A, Christy B, Clark K, Classen L, Clevermann F, Coenders S, Cowen DF, Cruz Silva AH, Danninger M, Daughhetee J, Davis JC, Day M, de André JPAM, De Clercq C, De Ridder S, Desiati P, de Vries KD, de With M, DeYoung T, Díaz-Vélez JC, Dunkman M, Eagan R, Eberhardt B, Eichmann B, Eisch J, Euler S, Evenson PA, Fadiran O, Fazely AR, Fedynitch A, Feintzeig J, Felde J, Feusels T, Filimonov K, Finley C, Fischer-Wasels T, Flis S, Franckowiak A, Frantzen K, Fuchs T, Gaisser TK, Gallagher J, Gerhardt L, Gier D, Gladstone L, Glüsenkamp T, Goldschmidt A, Golup G, Gonzalez JG, Goodman JA, Góra D, Grandmont DT, Grant D, Gretskov P, Groh JC, Groß A, Ha C, Haack C, Haj Ismail A, Hallen P, Hallgren A, Halzen F, Hanson K, Hebecker D, Heereman D, Heinen D, Helbing K, Hellauer R, Hellwig D, Hickford S, Hill GC, Hoffman KD, Hoffmann R, Homeier A, Hoshina K, Huang F, Huelsnitz W, Hulth PO, Hultqvist K, Hussain S, Ishihara A, Jacobi E, Jacobsen J, Jagielski K, Japaridze GS, Jero K, Jlelati O, Jurkovic M, Kaminsky B, Kappes A, Karg T, Karle A, Kauer M, Kelley JL, Kheirandish A, Kiryluk J, Kläs J, Klein SR, Köhne JH, Kohnen G, Kolanoski H, Koob A, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Kriesten A, Krings K, Kroll G, Kunnen J, Kurahashi N, Kuwabara T, Labare M, Larsen DT, Larson MJ, Lesiak-Bzdak M, Leuermann M, Leute J, Lünemann J, Macías O, Madsen J, Maggi G, Maruyama R, Mase K, Matis HS, McNally F, Meagher K, Meli A, Meures T, Miarecki S, Middell E, Middlemas E, Milke N, Miller J, Mohrmann L, Montaruli T, Morse R, Nahnhauer R, Naumann U, Niederhausen H, Nowicki SC, Nygren DR, Obertacke A, Odrowski S, Olivas A, Omairat A, O'Murchadha A, Palczewski T, Paul L, Penek O, Pepper JA, Pérez de Los Heros C, Pfendner C, Pieloth D, Pinat E, Posselt J, Price PB, Przybylski GT, Pütz J, Quinnan M, Rädel L, Rameez M, Rawlins K, Redl P, Rees I, Reimann R, Resconi E, Rhode W, Richman M, Riedel B, Robertson S, Rodrigues JP, Rongen M, Rott C, Ruhe T, Ruzybayev B, Ryckbosch D, Saba SM, Sander HG, Santander M, Sarkar S, Schatto K, Scheriau F, Schmidt T, Schmitz M, Schoenen S, Schöneberg S, Schönwald A, Schukraft A, Schulte L, Schulz O, Seckel D, Sestayo Y, Seunarine S, Shanidze R, Sheremata C, Smith MWE, Soldin D, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stanisha NA, Stasik A, Stezelberger T, Stokstad RG, Stößl A, Strahler EA, Ström R, Strotjohann NL, Sullivan GW, Taavola H, Taboada I, Tamburro A, Tepe A, Ter-Antonyan S, Terliuk A, Tešić G, Tilav S, Toale PA, Tobin MN, Tosi D, Tselengidou M, Unger E, Usner M, Vallecorsa S, van Eijndhoven N, Vandenbroucke J, van Santen J, Vehring M, Voge M, Vraeghe M, Walck C, Wallraff M, Weaver C, Wellons M, Wendt C, Westerhoff S, Whelan BJ, Whitehorn N, Wichary C, Wiebe K, Wiebusch CH, Williams DR, Wissing H, Wolf M, Wood TR, Woschnagg K, Xu DL, Xu XW, Yanez JP, Yodh G, Yoshida S, Zarzhitsky P, Ziemann J, Zierke S, Zoll M. Observation of high-energy astrophysical neutrinos in three years of IceCube data. Phys Rev Lett 2014; 113:101101. [PMID: 25238345 DOI: 10.1103/physrevlett.113.101101] [Citation(s) in RCA: 150] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Indexed: 06/03/2023]
Abstract
A search for high-energy neutrinos interacting within the IceCube detector between 2010 and 2012 provided the first evidence for a high-energy neutrino flux of extraterrestrial origin. Results from an analysis using the same methods with a third year (2012-2013) of data from the complete IceCube detector are consistent with the previously reported astrophysical flux in the 100 TeV-PeV range at the level of 10(-8) GeV cm-2 s-1 sr-1 per flavor and reject a purely atmospheric explanation for the combined three-year data at 5.7σ. The data are consistent with expectations for equal fluxes of all three neutrino flavors and with isotropic arrival directions, suggesting either numerous or spatially extended sources. The three-year data set, with a live time of 988 days, contains a total of 37 neutrino candidate events with deposited energies ranging from 30 to 2000 TeV. The 2000-TeV event is the highest-energy neutrino interaction ever observed.
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Affiliation(s)
- M G Aartsen
- School of Chemistry & Physics, University of Adelaide, Adelaide, South Australia 5005 Australia
| | | | - J Adams
- Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - J A Aguilar
- Département de physique nucléaire et corpusculaire, Université de Genève, CH-1211 Genève, Switzerland
| | - M Ahlers
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Ahrens
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - D Altmann
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, D-91058 Erlangen, Germany
| | - T Anderson
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - C Arguelles
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - T C Arlen
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - J Auffenberg
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - X Bai
- Department of Physics, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
| | - S W Barwick
- Department of Physics and Astronomy, University of California, Irvine, California 92697, USA
| | - V Baum
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - J J Beatty
- Department of Physics and Center for Cosmology and Astro-Particle Physics, Ohio State University, Columbus, Ohio 43210, USA and Department of Astronomy, Ohio State University, Columbus, Ohio 43210, USA
| | - J Becker Tjus
- Fakultät für Physik & Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - K-H Becker
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - S BenZvi
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | | - D Berley
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | | | | | - D Z Besson
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, USA
| | - G Binder
- Department of Physics, University of California, Berkeley, California 94720, USA and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - D Bindig
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - M Bissok
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - E Blaufuss
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - J Blumenthal
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - D J Boersma
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - C Bohm
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - D Bose
- Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea
| | - S Böser
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - O Botner
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - L Brayeur
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | | | - A M Brown
- Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - J Casey
- School of Physics and Center for Relativistic Astrophysics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - M Casier
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - D Chirkin
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - A Christov
- Département de physique nucléaire et corpusculaire, Université de Genève, CH-1211 Genève, Switzerland
| | - B Christy
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - K Clark
- Department of Physics, University of Toronto, Toronto, Ontario M5S 1A7, Canada
| | - L Classen
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, D-91058 Erlangen, Germany
| | - F Clevermann
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | | | - D F Cowen
- Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, Pennsylvania 16802, USA and Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | | | - M Danninger
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - J Daughhetee
- School of Physics and Center for Relativistic Astrophysics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - J C Davis
- Department of Physics and Center for Cosmology and Astro-Particle Physics, Ohio State University, Columbus, Ohio 43210, USA
| | - M Day
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J P A M de André
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - C De Clercq
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - S De Ridder
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - P Desiati
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - K D de Vries
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - M de With
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - T DeYoung
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - J C Díaz-Vélez
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Dunkman
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - R Eagan
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - B Eberhardt
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - B Eichmann
- Fakultät für Physik & Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - J Eisch
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S Euler
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - P A Evenson
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - O Fadiran
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - A R Fazely
- Department of Physics, Southern University, Baton Rouge, Louisiana 70813, USA
| | - A Fedynitch
- Fakultät für Physik & Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - J Feintzeig
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J Felde
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - T Feusels
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - K Filimonov
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - C Finley
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - T Fischer-Wasels
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - S Flis
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - A Franckowiak
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - K Frantzen
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - T Fuchs
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - T K Gaisser
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - J Gallagher
- Department of Astronomy, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - L Gerhardt
- Department of Physics, University of California, Berkeley, California 94720, USA and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - D Gier
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - L Gladstone
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | | - A Goldschmidt
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - G Golup
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - J G Gonzalez
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - J A Goodman
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - D Góra
- DESY, D-15735 Zeuthen, Germany
| | - D T Grandmont
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - D Grant
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - P Gretskov
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - J C Groh
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - A Groß
- T.U. Munich, D-85748 Garching, Germany
| | - C Ha
- Department of Physics, University of California, Berkeley, California 94720, USA and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - C Haack
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - A Haj Ismail
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - P Hallen
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - A Hallgren
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - F Halzen
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - K Hanson
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - D Hebecker
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - D Heereman
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - D Heinen
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - K Helbing
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - R Hellauer
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - D Hellwig
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - S Hickford
- Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - G C Hill
- School of Chemistry & Physics, University of Adelaide, Adelaide, South Australia 5005 Australia
| | - K D Hoffman
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - R Hoffmann
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - A Homeier
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - K Hoshina
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - F Huang
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - W Huelsnitz
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - P O Hulth
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - K Hultqvist
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - S Hussain
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - A Ishihara
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | | | - J Jacobsen
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - K Jagielski
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - G S Japaridze
- CTSPS, Clark-Atlanta University, Atlanta, Georgia 30314, USA
| | - K Jero
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - O Jlelati
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | | | | | - A Kappes
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, D-91058 Erlangen, Germany
| | - T Karg
- DESY, D-15735 Zeuthen, Germany
| | - A Karle
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Kauer
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J L Kelley
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - A Kheirandish
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J Kiryluk
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
| | - J Kläs
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - S R Klein
- Department of Physics, University of California, Berkeley, California 94720, USA and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - J-H Köhne
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - G Kohnen
- Université de Mons, 7000 Mons, Belgium
| | - H Kolanoski
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - A Koob
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - L Köpke
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - C Kopper
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S Kopper
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - D J Koskinen
- Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - M Kowalski
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - A Kriesten
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - K Krings
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - G Kroll
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - J Kunnen
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - N Kurahashi
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - T Kuwabara
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - M Labare
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - D T Larsen
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M J Larson
- Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - M Lesiak-Bzdak
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
| | - M Leuermann
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - J Leute
- T.U. Munich, D-85748 Garching, Germany
| | - J Lünemann
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - O Macías
- Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - J Madsen
- Department of Physics, University of Wisconsin, River Falls, Wisconsin 54022, USA
| | - G Maggi
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - R Maruyama
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - K Mase
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | - H S Matis
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - F McNally
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - K Meagher
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - A Meli
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - T Meures
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - S Miarecki
- Department of Physics, University of California, Berkeley, California 94720, USA and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | | | - E Middlemas
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - N Milke
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - J Miller
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | | | - T Montaruli
- Département de physique nucléaire et corpusculaire, Université de Genève, CH-1211 Genève, Switzerland
| | - R Morse
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | | - U Naumann
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - H Niederhausen
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
| | - S C Nowicki
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - D R Nygren
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - A Obertacke
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - S Odrowski
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - A Olivas
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - A Omairat
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - A O'Murchadha
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - T Palczewski
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - L Paul
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - O Penek
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - J A Pepper
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - C Pérez de Los Heros
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - C Pfendner
- Department of Physics and Center for Cosmology and Astro-Particle Physics, Ohio State University, Columbus, Ohio 43210, USA
| | - D Pieloth
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - E Pinat
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - J Posselt
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - P B Price
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - G T Przybylski
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - J Pütz
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - M Quinnan
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - L Rädel
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - M Rameez
- Département de physique nucléaire et corpusculaire, Université de Genève, CH-1211 Genève, Switzerland
| | - K Rawlins
- Department of Physics and Astronomy, University of Alaska Anchorage, 3211 Providence Drive, Anchorage, Alaska 99508, USA
| | - P Redl
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - I Rees
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - R Reimann
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - E Resconi
- T.U. Munich, D-85748 Garching, Germany
| | - W Rhode
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - M Richman
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - B Riedel
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S Robertson
- School of Chemistry & Physics, University of Adelaide, Adelaide, South Australia 5005 Australia
| | - J P Rodrigues
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Rongen
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - C Rott
- Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea
| | - T Ruhe
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - B Ruzybayev
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - D Ryckbosch
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - S M Saba
- Fakultät für Physik & Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - H-G Sander
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - M Santander
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S Sarkar
- Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark and Department of Physics, University of Oxford, 1 Keble Road, Oxford OX1 3NP, United Kingdom
| | - K Schatto
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - F Scheriau
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - T Schmidt
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - M Schmitz
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - S Schoenen
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - S Schöneberg
- Fakultät für Physik & Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | | | - A Schukraft
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - L Schulte
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - O Schulz
- T.U. Munich, D-85748 Garching, Germany
| | - D Seckel
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - Y Sestayo
- T.U. Munich, D-85748 Garching, Germany
| | - S Seunarine
- Department of Physics, University of Wisconsin, River Falls, Wisconsin 54022, USA
| | | | - C Sheremata
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - M W E Smith
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - D Soldin
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - G M Spiczak
- Department of Physics, University of Wisconsin, River Falls, Wisconsin 54022, USA
| | | | - M Stamatikos
- Department of Physics and Center for Cosmology and Astro-Particle Physics, Ohio State University, Columbus, Ohio 43210, USA
| | - T Stanev
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - N A Stanisha
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - A Stasik
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - T Stezelberger
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - R G Stokstad
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - A Stößl
- DESY, D-15735 Zeuthen, Germany
| | - E A Strahler
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - R Ström
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - N L Strotjohann
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - G W Sullivan
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - H Taavola
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - I Taboada
- School of Physics and Center for Relativistic Astrophysics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - A Tamburro
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - A Tepe
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - S Ter-Antonyan
- Department of Physics, Southern University, Baton Rouge, Louisiana 70813, USA
| | | | - G Tešić
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - S Tilav
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - P A Toale
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - M N Tobin
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - D Tosi
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Tselengidou
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, D-91058 Erlangen, Germany
| | - E Unger
- Fakultät für Physik & Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - M Usner
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - S Vallecorsa
- Département de physique nucléaire et corpusculaire, Université de Genève, CH-1211 Genève, Switzerland
| | - N van Eijndhoven
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - J Vandenbroucke
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J van Santen
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Vehring
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - M Voge
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - M Vraeghe
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - C Walck
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - M Wallraff
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - Ch Weaver
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Wellons
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - C Wendt
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S Westerhoff
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - B J Whelan
- School of Chemistry & Physics, University of Adelaide, Adelaide, South Australia 5005 Australia
| | - N Whitehorn
- Department of Physics, University of California, Berkeley, California 94720, USA and Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - C Wichary
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - K Wiebe
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - C H Wiebusch
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - D R Williams
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - H Wissing
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - M Wolf
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - T R Wood
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - K Woschnagg
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - D L Xu
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - X W Xu
- Department of Physics, Southern University, Baton Rouge, Louisiana 70813, USA
| | | | - G Yodh
- Department of Physics and Astronomy, University of California, Irvine, California 92697, USA
| | - S Yoshida
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | - P Zarzhitsky
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - J Ziemann
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - S Zierke
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - M Zoll
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
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Aartsen MG, Abbasi R, Abdou Y, Ackermann M, Adams J, Aguilar JA, Ahlers M, Altmann D, Auffenberg J, Bai X, Baker M, Barwick SW, Baum V, Bay R, Beatty JJ, Bechet S, Becker Tjus J, Becker KH, Benabderrahmane ML, BenZvi S, Berghaus P, Berley D, Bernardini E, Bernhard A, Bertrand D, Besson DZ, Binder G, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohaichuk S, Bohm C, Bose D, Böser S, Botner O, Brayeur L, Bretz HP, Brown AM, Bruijn R, Brunner J, Carson M, Casey J, Casier M, Chirkin D, Christov A, Christy B, Clark K, Clevermann F, Coenders S, Cohen S, Cowen DF, Cruz Silva AH, Danninger M, Daughhetee J, Davis JC, Day M, De Clercq C, De Ridder S, Desiati P, de Vries KD, de With M, DeYoung T, Díaz-Vélez JC, Dunkman M, Eagan R, Eberhardt B, Eichmann B, Eisch J, Ellsworth RW, Euler S, Evenson PA, Fadiran O, Fazely AR, Fedynitch A, Feintzeig J, Feusels T, Filimonov K, Finley C, Fischer-Wasels T, Flis S, Franckowiak A, Frantzen K, Fuchs T, Gaisser TK, Gallagher J, Gerhardt L, Gladstone L, Glüsenkamp T, Goldschmidt A, Golup G, Gonzalez JG, Goodman JA, Góra D, Grandmont DT, Grant D, Groß A, Ha C, Haj Ismail A, Hallen P, Hallgren A, Halzen F, Hanson K, Heereman D, Heinen D, Helbing K, Hellauer R, Hickford S, Hill GC, Hoffman KD, Hoffmann R, Homeier A, Hoshina K, Huelsnitz W, Hulth PO, Hultqvist K, Hussain S, Ishihara A, Jacobi E, Jacobsen J, Jagielski K, Japaridze GS, Jero K, Jlelati O, Kaminsky B, Kappes A, Karg T, Karle A, Kelley JL, Kiryluk J, Kläs J, Klein SR, Köhne JH, Kohnen G, Kolanoski H, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Krasberg M, Krings K, Kroll G, Kunnen J, Kurahashi N, Kuwabara T, Labare M, Landsman H, Larson MJ, Lesiak-Bzdak M, Leuermann M, Leute J, Lünemann J, Madsen J, Maggi G, Maruyama R, Mase K, Matis HS, McNally F, Meagher K, Merck M, Meures T, Miarecki S, Middell E, Milke N, Miller J, Mohrmann L, Montaruli T, Morse R, Nahnhauer R, Naumann U, Niederhausen H, Nowicki SC, Nygren DR, Obertacke A, Odrowski S, Olivas A, O'Murchadha A, Paul L, Pepper JA, Pérez de los Heros C, Pfendner C, Pieloth D, Pinat E, Posselt J, Price PB, Przybylski GT, Rädel L, Rameez M, Rawlins K, Redl P, Reimann R, Resconi E, Rhode W, Ribordy M, Richman M, Riedel B, Rodrigues JP, Rott C, Ruhe T, Ruzybayev B, Ryckbosch D, Saba SM, Salameh T, Sander HG, Santander M, Sarkar S, Schatto K, Scheriau F, Schmidt T, Schmitz M, Schoenen S, Schöneberg S, Schönwald A, Schukraft A, Schulte L, Schulz O, Seckel D, Sestayo Y, Seunarine S, Shanidze R, Sheremata C, Smith MWE, Soldin D, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stasik A, Stezelberger T, Stokstad RG, Stößl A, Strahler EA, Ström R, Sullivan GW, Taavola H, Taboada I, Tamburro A, Tepe A, Ter-Antonyan S, Tešić G, Tilav S, Toale PA, Toscano S, Unger E, Usner M, van Eijndhoven N, Van Overloop A, van Santen J, Vehring M, Voge M, Vraeghe M, Walck C, Waldenmaier T, Wallraff M, Weaver C, Wellons M, Wendt C, Westerhoff S, Whitehorn N, Wiebe K, Wiebusch CH, Williams DR, Wissing H, Wolf M, Wood TR, Woschnagg K, Xu DL, Xu XW, Yanez JP, Yodh G, Yoshida S, Zarzhitsky P, Ziemann J, Zierke S, Zoll M. Evidence for high-energy extraterrestrial neutrinos at the IceCube detector. Science 2013; 342:1242856. [PMID: 24264993 DOI: 10.1126/science.1242856] [Citation(s) in RCA: 179] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
We report on results of an all-sky search for high-energy neutrino events interacting within the IceCube neutrino detector conducted between May 2010 and May 2012. The search follows up on the previous detection of two PeV neutrino events, with improved sensitivity and extended energy coverage down to about 30 TeV. Twenty-six additional events were observed, substantially more than expected from atmospheric backgrounds. Combined, both searches reject a purely atmospheric origin for the 28 events at the 4σ level. These 28 events, which include the highest energy neutrinos ever observed, have flavors, directions, and energies inconsistent with those expected from the atmospheric muon and neutrino backgrounds. These properties are, however, consistent with generic predictions for an additional component of extraterrestrial origin.
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Aartsen MG, Abbasi R, Abdou Y, Ackermann M, Adams J, Aguilar JA, Ahlers M, Altmann D, Auffenberg J, Bai X, Baker M, Barwick SW, Baum V, Bay R, Beatty JJ, Bechet S, Becker Tjus J, Becker KH, Bell M, Benabderrahmane ML, Benzvi S, Berdermann J, Berghaus P, Berley D, Bernardini E, Bernhard A, Bertrand D, Besson DZ, Binder G, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohaichuk S, Bohm C, Bose D, Böser S, Botner O, Brayeur L, Bretz HP, Brown AM, Bruijn R, Brunner J, Carson M, Casey J, Casier M, Chirkin D, Christov A, Christy B, Clark K, Clevermann F, Coenders S, Cohen S, Cowen DF, Cruz Silva AH, Danninger M, Daughhetee J, Davis JC, De Clercq C, De Ridder S, Desiati P, de With M, DeYoung T, Díaz-Vélez JC, Dunkman M, Eagan R, Eberhardt B, Eisch J, Ellsworth RW, Euler S, Evenson PA, Fadiran O, Fazely AR, Fedynitch A, Feintzeig J, Feusels T, Filimonov K, Finley C, Fischer-Wasels T, Flis S, Franckowiak A, Franke R, Frantzen K, Fuchs T, Gaisser TK, Gallagher J, Gerhardt L, Gladstone L, Glüsenkamp T, Goldschmidt A, Golup G, Gonzalez JG, Goodman JA, Góra D, Grandmont DT, Grant D, Groß A, Ha C, Haj Ismail A, Hallen P, Hallgren A, Halzen F, Hanson K, Heereman D, Heinen D, Helbing K, Hellauer R, Hickford S, Hill GC, Hoffman KD, Hoffmann R, Homeier A, Hoshina K, Huelsnitz W, Hulth PO, Hultqvist K, Hussain S, Ishihara A, Jacobi E, Jacobsen J, Jagielski K, Japaridze GS, Jero K, Jlelati O, Kaminsky B, Kappes A, Karg T, Karle A, Kelley JL, Kiryluk J, Kislat F, Kläs J, Klein SR, Köhne JH, Kohnen G, Kolanoski H, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Krasberg M, Krings K, Kroll G, Kunnen J, Kurahashi N, Kuwabara T, Labare M, Landsman H, Larson MJ, Lesiak-Bzdak M, Leuermann M, Leute J, Lünemann J, Madsen J, Maruyama R, Mase K, Matis HS, McNally F, Meagher K, Merck M, Mészáros P, Meures T, Miarecki S, Middell E, Milke N, Miller J, Mohrmann L, Montaruli T, Morse R, Nahnhauer R, Naumann U, Niederhausen H, Nowicki SC, Nygren DR, Obertacke A, Odrowski S, Olivas A, Olivo M, O'Murchadha A, Palazzo A, Paul L, Pepper JA, Pérez de los Heros C, Pfendner C, Pieloth D, Pinat E, Pirk N, Posselt J, Price PB, Przybylski GT, Rädel L, Rameez M, Rawlins K, Redl P, Reimann R, Resconi E, Rhode W, Ribordy M, Richman M, Riedel B, Rodrigues JP, Rott C, Ruhe T, Ruzybayev B, Ryckbosch D, Saba SM, Salameh T, Sander HG, Santander M, Sarkar S, Schatto K, Scheel M, Scheriau F, Schmidt T, Schmitz M, Schoenen S, Schöneberg S, Schönwald A, Schukraft A, Schulte L, Schulz O, Seckel D, Sestayo Y, Seunarine S, Sheremata C, Smith MWE, Soldin D, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stasik A, Stezelberger T, Stokstad RG, Stößl A, Strahler EA, Ström R, Sullivan GW, Taavola H, Taboada I, Tamburro A, Tepe A, Ter-Antonyan S, Tešić G, Tilav S, Toale PA, Toscano S, Usner M, van der Drift D, van Eijndhoven N, Van Overloop A, van Santen J, Vehring M, Voge M, Vraeghe M, Walck C, Waldenmaier T, Wallraff M, Wasserman R, Weaver C, Wellons M, Wendt C, Westerhoff S, Whitehorn N, Wiebe K, Wiebusch CH, Williams DR, Wissing H, Wolf M, Wood TR, Woschnagg K, Xu C, Xu DL, Xu XW, Yanez JP, Yodh G, Yoshida S, Zarzhitsky P, Ziemann J, Zierke S, Zoll M. Measurement of atmospheric neutrino oscillations with IceCube. Phys Rev Lett 2013; 111:081801. [PMID: 24010427 DOI: 10.1103/physrevlett.111.081801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Indexed: 06/02/2023]
Abstract
We present the first statistically significant detection of neutrino oscillations in the high-energy regime (>20 GeV) from an analysis of IceCube Neutrino Observatory data collected in 2010 and 2011. This measurement is made possible by the low-energy threshold of the DeepCore detector (~20 GeV) and benefits from the use of the IceCube detector as a veto against cosmic-ray-induced muon background. The oscillation signal was detected within a low-energy muon neutrino sample (20-100 GeV) extracted from data collected by DeepCore. A high-energy muon neutrino sample (100 GeV-10 TeV) was extracted from IceCube data to constrain systematic uncertainties. The disappearance of low-energy upward-going muon neutrinos was observed, and the nonoscillation hypothesis is rejected with more than 5σ significance. In a two-neutrino flavor formalism, our data are best described by the atmospheric neutrino oscillation parameters |Δm(32)(2)|=(2.3(-0.5)(+0.6))×10(-3) eV(2) and sin(2)(2θ(23))>0.93, and maximum mixing is favored.
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Affiliation(s)
- M G Aartsen
- School of Chemistry and Physics, University of Adelaide, Adelaide South Australia, 5005 Australia
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Aartsen MG, Abbasi R, Abdou Y, Ackermann M, Adams J, Aguilar JA, Ahlers M, Altmann D, Auffenberg J, Bai X, Baker M, Barwick SW, Baum V, Bay R, Beatty JJ, Bechet S, Becker Tjus J, Becker KH, Bell M, Benabderrahmane ML, BenZvi S, Berdermann J, Berghaus P, Berley D, Bernardini E, Bernhard A, Bertrand D, Besson DZ, Binder G, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohaichuk S, Bohm C, Bose D, Böser S, Botner O, Brayeur L, Bretz HP, Brown AM, Bruijn R, Brunner J, Carson M, Casey J, Casier M, Chirkin D, Christov A, Christy B, Clark K, Clevermann F, Coenders S, Cohen S, Cowen DF, Cruz Silva AH, Danninger M, Daughhetee J, Davis JC, De Clercq C, De Ridder S, Desiati P, de With M, DeYoung T, Díaz-Vélez JC, Dunkman M, Eagan R, Eberhardt B, Eisch J, Ellsworth RW, Euler S, Evenson PA, Fadiran O, Fazely AR, Fedynitch A, Feintzeig J, Feusels T, Filimonov K, Finley C, Fischer-Wasels T, Flis S, Franckowiak A, Franke R, Frantzen K, Fuchs T, Gaisser TK, Gallagher J, Gerhardt L, Gladstone L, Glüsenkamp T, Goldschmidt A, Golup G, Gonzalez JG, Goodman JA, Góra D, Grant D, Groß A, Gurtner M, Ha C, Haj Ismail A, Hallen P, Hallgren A, Halzen F, Hanson K, Heereman D, Heinen D, Helbing K, Hellauer R, Hickford S, Hill GC, Hoffman KD, Hoffmann R, Homeier A, Hoshina K, Huelsnitz W, Hulth PO, Hultqvist K, Hussain S, Ishihara A, Jacobi E, Jacobsen J, Jagielski K, Japaridze GS, Jero K, Jlelati O, Kaminsky B, Kappes A, Karg T, Karle A, Kelley JL, Kiryluk J, Kislat F, Kläs J, Klein SR, Köhne JH, Kohnen G, Kolanoski H, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Krasberg M, Krings K, Kroll G, Kunnen J, Kurahashi N, Kuwabara T, Labare M, Landsman H, Larson MJ, Lesiak-Bzdak M, Leuermann M, Leute J, Lünemann J, Madsen J, Maruyama R, Mase K, Matis HS, McNally F, Meagher K, Merck M, Mészáros P, Meures T, Miarecki S, Middell E, Milke N, Miller J, Mohrmann L, Montaruli T, Morse R, Nahnhauer R, Naumann U, Niederhausen H, Nowicki SC, Nygren DR, Obertacke A, Odrowski S, Olivas A, Olivo M, O'Murchadha A, Paul L, Pepper JA, Pérez de los Heros C, Pfendner C, Pieloth D, Pinat E, Pirk N, Posselt J, Price PB, Przybylski GT, Rädel L, Rameez M, Rawlins K, Redl P, Reimann R, Resconi E, Rhode W, Ribordy M, Richman M, Riedel B, Rodrigues JP, Rott C, Ruhe T, Ruzybayev B, Ryckbosch D, Saba SM, Salameh T, Sander HG, Santander M, Sarkar S, Schatto K, Scheel M, Scheriau F, Schmidt T, Schmitz M, Schoenen S, Schöneberg S, Schönwald A, Schukraft A, Schulte L, Schulz O, Seckel D, Sestayo Y, Seunarine S, Sheremata C, Smith MWE, Soiron M, Soldin D, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stasik A, Stezelberger T, Stokstad RG, Stößl A, Strahler EA, Ström R, Sullivan GW, Taavola H, Taboada I, Tamburro A, Ter-Antonyan S, Tešić G, Tilav S, Toale PA, Toscano S, Usner M, van der Drift D, van Eijndhoven N, Van Overloop A, van Santen J, Vehring M, Voge M, Vraeghe M, Walck C, Waldenmaier T, Wallraff M, Wasserman R, Weaver C, Wellons M, Wendt C, Westerhoff S, Whitehorn N, Wiebe K, Wiebusch CH, Williams DR, Wissing H, Wolf M, Wood TR, Woschnagg K, Xu C, Xu DL, Xu XW, Yanez JP, Yodh G, Yoshida S, Zarzhitsky P, Ziemann J, Zierke S, Zilles A, Zoll M. First observation of PeV-energy neutrinos with IceCube. Phys Rev Lett 2013; 111:021103. [PMID: 23889381 DOI: 10.1103/physrevlett.111.021103] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Indexed: 06/02/2023]
Abstract
We report on the observation of two neutrino-induced events which have an estimated deposited energy in the IceCube detector of 1.04±0.16 and 1.14±0.17 PeV, respectively, the highest neutrino energies observed so far. These events are consistent with fully contained particle showers induced by neutral-current ν(e,μ,τ) (ν(e,μ,τ)) or charged-current ν(e) (ν(e)) interactions within the IceCube detector. The events were discovered in a search for ultrahigh energy neutrinos using data corresponding to 615.9 days effective live time. The expected number of atmospheric background is 0.082±0.004(stat)(-0.057)(+0.041)(syst). The probability of observing two or more candidate events under the atmospheric background-only hypothesis is 2.9×10(-3) (2.8σ) taking into account the uncertainty on the expected number of background events. These two events could be a first indication of an astrophysical neutrino flux; the moderate significance, however, does not permit a definitive conclusion at this time.
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Affiliation(s)
- M G Aartsen
- School of Chemistry and Physics, University of Adelaide, Adelaide South Australia 5005, Australia
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Aartsen MG, Abbasi R, Abdou Y, Ackermann M, Adams J, Aguilar JA, Ahlers M, Altmann D, Auffenberg J, Bai X, Baker M, Barwick SW, Baum V, Bay R, Beattie K, Beatty JJ, Bechet S, Becker Tjus J, Becker KH, Bell M, Benabderrahmane ML, BenZvi S, Berdermann J, Berghaus P, Berley D, Bernardini E, Bernhard A, Bertrand D, Besson DZ, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohaichuk S, Bohm C, Bose D, Böser S, Botner O, Brayeur L, Brown AM, Bruijn R, Brunner J, Buitink S, Carson M, Casey J, Casier M, Chirkin D, Christy B, Clark K, Clevermann F, Cohen S, Cowen DF, Cruz Silva AH, Danninger M, Daughhetee J, Davis JC, De Clercq C, De Ridder S, Desiati P, de Vries-Uiterweerd G, de With M, DeYoung T, Díaz-Vélez JC, Dreyer J, Dunkman M, Eagan R, Eberhardt B, Eisch J, Ellsworth RW, Engdegård O, Euler S, Evenson PA, Fadiran O, Fazely AR, Fedynitch A, Feintzeig J, Feusels T, Filimonov K, Finley C, Fischer-Wasels T, Flis S, Franckowiak A, Franke R, Frantzen K, Fuchs T, Gaisser TK, Gallagher J, Gerhardt L, Gladstone L, Glüsenkamp T, Goldschmidt A, Golup G, Goodman JA, Góra D, Grant D, Groß A, Gurtner M, Ha C, Haj Ismail A, Hallgren A, Halzen F, Hanson K, Heereman D, Heimann P, Heinen D, Helbing K, Hellauer R, Hickford S, Hill GC, Hoffman KD, Hoffmann R, Homeier A, Hoshina K, Huelsnitz W, Hulth PO, Hultqvist K, Hussain S, Ishihara A, Jacobi E, Jacobsen J, Japaridze GS, Jero K, Jlelati O, Kaminsky B, Kappes A, Karg T, Karle A, Kelley JL, Kiryluk J, Kislat F, Kläs J, Klein SR, Köhne JH, Kohnen G, Kolanoski H, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Krasberg M, Kroll G, Kunnen J, Kurahashi N, Kuwabara T, Labare M, Landsman H, Larson MJ, Lesiak-Bzdak M, Leute J, Lünemann J, Madsen J, Maruyama R, Mase K, Matis HS, McNally F, Meagher K, Merck M, Mészáros P, Meures T, Miarecki S, Middell E, Milke N, Miller J, Mohrmann L, Montaruli T, Morse R, Nahnhauer R, Naumann U, Niederhausen H, Nowicki SC, Nygren DR, Obertacke A, Odrowski S, Olivas A, Olivo M, O'Murchadha A, Panknin S, Paul L, Pepper JA, Pérez de los Heros C, Pfendner C, Pieloth D, Pirk N, Posselt J, Price PB, Przybylski GT, Rädel L, Rawlins K, Redl P, Resconi E, Rhode W, Ribordy M, Richman M, Riedel B, Rodrigues JP, Rott C, Ruhe T, Ruzybayev B, Ryckbosch D, Saba SM, Salameh T, Sander HG, Santander M, Sarkar S, Schatto K, Scheel M, Scheriau F, Schmidt T, Schmitz M, Schoenen S, Schöneberg S, Schönherr L, Schönwald A, Schukraft A, Schulte L, Schulz O, Seckel D, Seo SH, Sestayo Y, Seunarine S, Sheremata C, Smith MWE, Soiron M, Soldin D, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stasik A, Stezelberger T, Stokstad RG, Stößl A, Strahler EA, Ström R, Sullivan GW, Taavola H, Taboada I, Tamburro A, Ter-Antonyan S, Tilav S, Toale PA, Toscano S, Usner M, van der Drift D, van Eijndhoven N, Van Overloop A, van Santen J, Vehring M, Voge M, Vraeghe M, Walck C, Waldenmaier T, Wallraff M, Wasserman R, Weaver C, Wellons M, Wendt C, Westerhoff S, Whitehorn N, Wiebe K, Wiebusch CH, Williams DR, Wissing H, Wolf M, Wood TR, Woschnagg K, Xu C, Xu DL, Xu XW, Yanez JP, Yodh G, Yoshida S, Zarzhitsky P, Ziemann J, Zierke S, Zilles A, Zoll M. Measurement of the atmospheric νe flux in IceCube. Phys Rev Lett 2013; 110:151105. [PMID: 25167245 DOI: 10.1103/physrevlett.110.151105] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 03/14/2013] [Indexed: 06/03/2023]
Abstract
We report the first measurement of the atmospheric electron neutrino flux in the energy range between approximately 80 GeV and 6 TeV, using data recorded during the first year of operation of IceCube's DeepCore low-energy extension. Techniques to identify neutrinos interacting within the DeepCore volume and veto muons originating outside the detector are demonstrated. A sample of 1029 events is observed in 281 days of data, of which 496±66(stat)±88(syst) are estimated to be cascade events, including both electron neutrino and neutral current events. The rest of the sample includes residual backgrounds due to atmospheric muons and charged current interactions of atmospheric muon neutrinos. The flux of the atmospheric electron neutrinos is consistent with models of atmospheric neutrinos in this energy range. This constitutes the first observation of electron neutrinos and neutral current interactions in a very large volume neutrino telescope optimized for the TeV energy range.
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Affiliation(s)
- M G Aartsen
- School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - R Abbasi
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - Y Abdou
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | | | - J Adams
- Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - J A Aguilar
- Département de physique nucléaire et corpusculaire, Université de Genève, CH-1211 Genève, Switzerland
| | - M Ahlers
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - D Altmann
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - J Auffenberg
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - X Bai
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - M Baker
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S W Barwick
- Department of Physics and Astronomy, University of California, Irvine, California 92697, USA
| | - V Baum
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - R Bay
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - K Beattie
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - J J Beatty
- Department of Physics and Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, USA and Department of Astronomy, The Ohio State University, Columbus, Ohio 43210, USA
| | - S Bechet
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - J Becker Tjus
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - K-H Becker
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - M Bell
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | | | - S BenZvi
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | | | | - D Berley
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | | | | | - D Bertrand
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - D Z Besson
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, USA
| | - D Bindig
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - M Bissok
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - E Blaufuss
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - J Blumenthal
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - D J Boersma
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany and Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - S Bohaichuk
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2G7, Canada
| | - C Bohm
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - D Bose
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - S Böser
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - O Botner
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - L Brayeur
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - A M Brown
- Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - R Bruijn
- Laboratory for High Energy Physics, École Polytechnique Fédérale, CH-1015 Lausanne, Switzerland
| | | | - S Buitink
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - M Carson
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - J Casey
- School of Physics and Center for Relativistic Astrophysics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - M Casier
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - D Chirkin
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - B Christy
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - K Clark
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - F Clevermann
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - S Cohen
- Laboratory for High Energy Physics, École Polytechnique Fédérale, CH-1015 Lausanne, Switzerland
| | - D F Cowen
- Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, Pennsylvania 16802, USA and Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | | | - M Danninger
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - J Daughhetee
- School of Physics and Center for Relativistic Astrophysics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - J C Davis
- Department of Physics and Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - C De Clercq
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - S De Ridder
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - P Desiati
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | | - M de With
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - T DeYoung
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - J C Díaz-Vélez
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J Dreyer
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - M Dunkman
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - R Eagan
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - B Eberhardt
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - J Eisch
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - R W Ellsworth
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - O Engdegård
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - S Euler
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - P A Evenson
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - O Fadiran
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - A R Fazely
- Department of Physics, Southern University, Baton Rouge, Louisiana 70813, USA
| | - A Fedynitch
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - J Feintzeig
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - T Feusels
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - K Filimonov
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - C Finley
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - T Fischer-Wasels
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - S Flis
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - A Franckowiak
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | | | - K Frantzen
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - T Fuchs
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - T K Gaisser
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - J Gallagher
- Department of Astronomy, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - L Gerhardt
- Department of Physics, University of California, Berkeley, California 94720, USA and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - L Gladstone
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | | - A Goldschmidt
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - G Golup
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - J A Goodman
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - D Góra
- DESY, D-15735 Zeuthen, Germany
| | - D Grant
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2G7, Canada
| | - A Groß
- T.U. Munich, D-85748 Garching, Germany
| | - M Gurtner
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - C Ha
- Department of Physics, University of California, Berkeley, California 94720, USA and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - A Haj Ismail
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - A Hallgren
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - F Halzen
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - K Hanson
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - D Heereman
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - P Heimann
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - D Heinen
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - K Helbing
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - R Hellauer
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - S Hickford
- Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - G C Hill
- School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - K D Hoffman
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - R Hoffmann
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - A Homeier
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - K Hoshina
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - W Huelsnitz
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - P O Hulth
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - K Hultqvist
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - S Hussain
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - A Ishihara
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | | | - J Jacobsen
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - G S Japaridze
- CTSPS, Clark-Atlanta University, Atlanta, Georgia 30314, USA
| | - K Jero
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - O Jlelati
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | | | - A Kappes
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - T Karg
- DESY, D-15735 Zeuthen, Germany
| | - A Karle
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J L Kelley
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J Kiryluk
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
| | | | - J Kläs
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - S R Klein
- Department of Physics, University of California, Berkeley, California 94720, USA and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - J-H Köhne
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - G Kohnen
- Université de Mons, 7000 Mons, Belgium
| | - H Kolanoski
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - L Köpke
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - C Kopper
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S Kopper
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - D J Koskinen
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - M Kowalski
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - M Krasberg
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - G Kroll
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - J Kunnen
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - N Kurahashi
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - T Kuwabara
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - M Labare
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - H Landsman
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M J Larson
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - M Lesiak-Bzdak
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
| | - J Leute
- T.U. Munich, D-85748 Garching, Germany
| | - J Lünemann
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - J Madsen
- Department of Physics, University of Wisconsin, River Falls, Wisconsin 54022, USA
| | - R Maruyama
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - K Mase
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | - H S Matis
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - F McNally
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - K Meagher
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - M Merck
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - P Mészáros
- Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, Pennsylvania 16802, USA and Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - T Meures
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - S Miarecki
- Department of Physics, University of California, Berkeley, California 94720, USA and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | | | - N Milke
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - J Miller
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | | | - T Montaruli
- Département de physique nucléaire et corpusculaire, Université de Genève, CH-1211 Genève, Switzerland
| | - R Morse
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | | - U Naumann
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - H Niederhausen
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
| | - S C Nowicki
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2G7, Canada
| | - D R Nygren
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - A Obertacke
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | | | - A Olivas
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - M Olivo
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - A O'Murchadha
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - S Panknin
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - L Paul
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - J A Pepper
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - C Pérez de los Heros
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - C Pfendner
- Department of Physics and Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - D Pieloth
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - N Pirk
- DESY, D-15735 Zeuthen, Germany
| | - J Posselt
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - P B Price
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - G T Przybylski
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - L Rädel
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - K Rawlins
- Department of Physics and Astronomy, University of Alaska Anchorage, 3211 Providence Drive, Anchorage, Alaska 99508, USA
| | - P Redl
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - E Resconi
- T.U. Munich, D-85748 Garching, Germany
| | - W Rhode
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - M Ribordy
- Laboratory for High Energy Physics, École Polytechnique Fédérale, CH-1015 Lausanne, Switzerland
| | - M Richman
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - B Riedel
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J P Rodrigues
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - C Rott
- Department of Physics and Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - T Ruhe
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - B Ruzybayev
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - D Ryckbosch
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - S M Saba
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - T Salameh
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - H-G Sander
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - M Santander
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S Sarkar
- Department of Physics, University of Oxford, 1 Keble Road, Oxford OX1 3NP, United Kingdom
| | - K Schatto
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - M Scheel
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - F Scheriau
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - T Schmidt
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - M Schmitz
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - S Schoenen
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - S Schöneberg
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - L Schönherr
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | | | - A Schukraft
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - L Schulte
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - O Schulz
- T.U. Munich, D-85748 Garching, Germany
| | - D Seckel
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - S H Seo
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - Y Sestayo
- T.U. Munich, D-85748 Garching, Germany
| | - S Seunarine
- Department of Physics, University of Wisconsin, River Falls, Wisconsin 54022, USA
| | - C Sheremata
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2G7, Canada
| | - M W E Smith
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - M Soiron
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - D Soldin
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - G M Spiczak
- Department of Physics, University of Wisconsin, River Falls, Wisconsin 54022, USA
| | | | - M Stamatikos
- Department of Physics and Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - T Stanev
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - A Stasik
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - T Stezelberger
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - R G Stokstad
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - A Stößl
- DESY, D-15735 Zeuthen, Germany
| | - E A Strahler
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - R Ström
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - G W Sullivan
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - H Taavola
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - I Taboada
- School of Physics and Center for Relativistic Astrophysics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - A Tamburro
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - S Ter-Antonyan
- Department of Physics, Southern University, Baton Rouge, Louisiana 70813, USA
| | - S Tilav
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - P A Toale
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - S Toscano
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Usner
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - D van der Drift
- Department of Physics, University of California, Berkeley, California 94720, USA and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - N van Eijndhoven
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - A Van Overloop
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - J van Santen
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Vehring
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - M Voge
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - M Vraeghe
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - C Walck
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - T Waldenmaier
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - M Wallraff
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - R Wasserman
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Ch Weaver
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Wellons
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - C Wendt
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S Westerhoff
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - N Whitehorn
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - K Wiebe
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - C H Wiebusch
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - D R Williams
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - H Wissing
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - M Wolf
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - T R Wood
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2G7, Canada
| | - K Woschnagg
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - C Xu
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - D L Xu
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - X W Xu
- Department of Physics, Southern University, Baton Rouge, Louisiana 70813, USA
| | | | - G Yodh
- Department of Physics and Astronomy, University of California, Irvine, California 92697, USA
| | - S Yoshida
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | - P Zarzhitsky
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - J Ziemann
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - S Zierke
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - A Zilles
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - M Zoll
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
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Aartsen MG, Abbasi R, Abdou Y, Ackermann M, Adams J, Aguilar JA, Ahlers M, Altmann D, Auffenberg J, Bai X, Baker M, Barwick SW, Baum V, Bay R, Beattie K, Beatty JJ, Bechet S, Becker Tjus J, Becker KH, Bell M, Benabderrahmane ML, BenZvi S, Berdermann J, Berghaus P, Berley D, Bernardini E, Bernhard A, Bertrand D, Besson DZ, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohaichuk S, Bohm C, Bose D, Böser S, Botner O, Brayeur L, Brown AM, Bruijn R, Brunner J, Buitink S, Carson M, Casey J, Casier M, Chirkin D, Christy B, Clark K, Clevermann F, Cohen S, Cowen DF, Cruz Silva AH, Danninger M, Daughhetee J, Davis JC, De Clercq C, De Ridder S, Desiati P, de Vries-Uiterweerd G, de With M, DeYoung T, Díaz-Vélez JC, Dreyer J, Dunkman M, Eagan R, Eberhardt B, Eisch J, Ellsworth RW, Engdegård O, Euler S, Evenson PA, Fadiran O, Fazely AR, Fedynitch A, Feintzeig J, Feusels T, Filimonov K, Finley C, Fischer-Wasels T, Flis S, Franckowiak A, Franke R, Frantzen K, Fuchs T, Gaisser TK, Gallagher J, Gerhardt L, Gladstone L, Glüsenkamp T, Goldschmidt A, Golup G, Goodman JA, Góra D, Grant D, Groß A, Gurtner M, Ha C, Haj Ismail A, Hallgren A, Halzen F, Hanson K, Heereman D, Heimann P, Heinen D, Helbing K, Hellauer R, Hickford S, Hill GC, Hoffman KD, Hoffmann R, Homeier A, Hoshina K, Huelsnitz W, Hulth PO, Hultqvist K, Hussain S, Ishihara A, Jacobi E, Jacobsen J, Japaridze GS, Jero K, Jlelati O, Kaminsky B, Kappes A, Karg T, Karle A, Kelley JL, Kiryluk J, Kislat F, Kläs J, Klein SR, Köhne JH, Kohnen G, Kolanoski H, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Krasberg M, Kroll G, Kunnen J, Kurahashi N, Kuwabara T, Labare M, Landsman H, Larson MJ, Lesiak-Bzdak M, Leute J, Lünemann J, Madsen J, Maruyama R, Mase K, Matis HS, McNally F, Meagher K, Merck M, Mészáros P, Meures T, Miarecki S, Middell E, Milke N, Miller J, Mohrmann L, Montaruli T, Morse R, Nahnhauer R, Naumann U, Niederhausen H, Nowicki SC, Nygren DR, Obertacke A, Odrowski S, Olivas A, Olivo M, O'Murchadha A, Paul L, Pepper JA, Pérez de los Heros C, Pfendner C, Pieloth D, Pirk N, Posselt J, Price PB, Przybylski GT, Rädel L, Rawlins K, Redl P, Resconi E, Rhode W, Ribordy M, Richman M, Riedel B, Rodrigues JP, Rott C, Ruhe T, Ruzybayev B, Ryckbosch D, Saba SM, Salameh T, Sander HG, Santander M, Sarkar S, Schatto K, Scheel M, Scheriau F, Schmidt T, Schmitz M, Schoenen S, Schöneberg S, Schönherr L, Schönwald A, Schukraft A, Schulte L, Schulz O, Seckel D, Seo SH, Sestayo Y, Seunarine S, Sheremata C, Smith MWE, Soiron M, Soldin D, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stasik A, Stezelberger T, Stokstad RG, Stößl A, Strahler EA, Ström R, Sullivan GW, Taavola H, Taboada I, Tamburro A, Ter-Antonyan S, Tilav S, Toale PA, Toscano S, Usner M, van der Drift D, van Eijndhoven N, Van Overloop A, van Santen J, Vehring M, Voge M, Vraeghe M, Walck C, Waldenmaier T, Wallraff M, Wasserman R, Weaver C, Wellons M, Wendt C, Westerhoff S, Whitehorn N, Wiebe K, Wiebusch CH, Williams DR, Wissing H, Wolf M, Wood TR, Woschnagg K, Xu C, Xu DL, Xu XW, Yanez JP, Yodh G, Yoshida S, Zarzhitsky P, Ziemann J, Zierke S, Zilles A, Zoll M. Search for dark matter annihilations in the sun with the 79-string IceCube detector. Phys Rev Lett 2013; 110:131302. [PMID: 23581307 DOI: 10.1103/physrevlett.110.131302] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 02/20/2013] [Indexed: 06/02/2023]
Abstract
We have performed a search for muon neutrinos from dark matter annihilation in the center of the Sun with the 79-string configuration of the IceCube neutrino telescope. For the first time, the DeepCore subarray is included in the analysis, lowering the energy threshold and extending the search to the austral summer. The 317 days of data collected between June 2010 and May 2011 are consistent with the expected background from atmospheric muons and neutrinos. Upper limits are set on the dark matter annihilation rate, with conversions to limits on spin-dependent and spin-independent scattering cross sections of weakly interacting massive particles (WIMPs) on protons, for WIMP masses in the range 20-5000 GeV/c2. These are the most stringent spin-dependent WIMP-proton cross section limits to date above 35 GeV/c2 for most WIMP models.
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Affiliation(s)
- M G Aartsen
- School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia 5005, Australia
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Abstract
In addition to the well reported beneficial effects of horse chestnut (Aesculus hippocastanum) extracts on venous insufficiency and associated conditions, such preparations also have many potential positive pharmacological effects on the skin. Extracts from this species, and in particular, those based on horse chestnut seeds, contain saponins, known collectively as 'aescin', which have a gentle soapy feel, and are potent anti-inflammatory compounds. Saponins, such as escin, also reduce capillary fragility, and therefore help to prevent leakage of fluids into surrounding tissues, which can cause swelling. An extract of horse chestnut has recently been shown to have one of the highest 'active-oxygen' scavenging abilities of 65 different plant extracts tested. Such extracts are more powerful anti-oxidants than vitamin E, and also exhibit potent cell-protective effects, which are linked to the well-known anti-ageing properties of anti-oxidants. The extract is also rich in a number of flavonoids, such as derivatives of quercetin and kaempferol. Flavonoids also have protective effects on blood vessels, and are well-known, powerful anti-oxidants.
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Affiliation(s)
- J A Wilkinson
- Herbal Research Laboratories, School of Health, Biological and Environmental Sciences, Middlesex University, Queensway, Enfield, Middlesex, UK
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Carlson AP, Brown AM, Zager E, Uchino K, Marks MP, Robertson C, Sinson GP, Marmarou A, Yonas H. Xenon-enhanced cerebral blood flow at 28% xenon provides uniquely safe access to quantitative, clinically useful cerebral blood flow information: a multicenter study. AJNR Am J Neuroradiol 2011; 32:1315-20. [PMID: 21700787 DOI: 10.3174/ajnr.a2522] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Xe-CT measures CBF and can be used to make clinical treatment decisions. Availability has been limited, in part due to safety concerns. Due to improvements in CT technology, the concentration of inhaled xenon gas has been decreased from 32% to 28%. To our knowledge, no data exist regarding the safety profile of this concentration. We sought to better determine the safety profile of this lower concentration through a multicenter evaluation of adverse events reported by all centers currently performing xenon/CT studies in the US. MATERIALS AND METHODS Patients were prospectively recruited at 7 centers to obtain safety and efficacy information. All studies were performed to answer a clinical question. All centers used the same xenon delivery system. CT imaging was used during a 4.3-minute inhalation of 28% xenon gas. Vital signs were monitored on all patients throughout each procedure. Occurrence and severity of adverse events were recorded by the principal investigator at each site. RESULTS At 7 centers, 2003 studies were performed, 1486 (74.2%) in nonventilated patients. The most common indications were occlusive vascular disease and ischemic stroke; 93% of studies were considered clinically useful. Thirty-nine studies (1.9%) caused respiratory suppression of >20 seconds, all of which resolved spontaneously. Shorter respiratory pauses occurred in 119 (5.9%), and hyperventilation, in 34 (1.7%). There were 53 additional adverse events (2.9%), 7 of which were classified as severe. No adverse event resulted in any persistent neurologic change or other sequelae. CONCLUSIONS Xe-CT CBF can be performed safely, with a very low risk of adverse events and, to date, no risk of permanent morbidity or sequelae. On the basis of the importance of the clinical information gained, Xe-CT should be made widely available.
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Affiliation(s)
- A P Carlson
- Department of Neurosurgery, University of New Mexico, Albuquerque, New Mexico, USA
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Abbasi R, Abdou Y, Abu-Zayyad T, Adams J, Aguilar JA, Ahlers M, Andeen K, Auffenberg J, Bai X, Baker M, Barwick SW, Bay R, Bazo Alba JL, Beattie K, Beatty JJ, Bechet S, Becker JK, Becker KH, Benabderrahmane ML, BenZvi S, Berdermann J, Berghaus P, Berley D, Bernardini E, Bertrand D, Besson DZ, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohm C, Bose D, Böser S, Botner O, Braun J, Brown AM, Buitink S, Carson M, Chirkin D, Christy B, Clem J, Clevermann F, Cohen S, Colnard C, Cowen DF, D'Agostino MV, Danninger M, Daughhetee J, Davis JC, De Clercq C, Demirörs L, Depaepe O, Descamps F, Desiati P, de Vries-Uiterweerd G, DeYoung T, Díaz-Vélez JC, Dierckxsens M, Dreyer J, Dumm JP, Ehrlich R, Eisch J, Ellsworth RW, Engdegård O, Euler S, Evenson PA, Fadiran O, Fazely AR, Fedynitch A, Feusels T, Filimonov K, Finley C, Fischer-Wasels T, Foerster MM, Fox BD, Franckowiak A, Franke R, Gaisser TK, Gallagher J, Geisler M, Gerhardt L, Gladstone L, Glüsenkamp T, Goldschmidt A, Goodman JA, Grant D, Griesel T, Gross A, Grullon S, Gurtner M, Ha C, Hallgren A, Halzen F, Han K, Hanson K, Heinen D, Helbing K, Herquet P, Hickford S, Hill GC, Hoffman KD, Homeier A, Hoshina K, Hubert D, Huelsnitz W, Hülss JP, Hulth PO, Hultqvist K, Hussain S, Ishihara A, Jacobsen J, Japaridze GS, Johansson H, Joseph JM, Kampert KH, Kappes A, Karg T, Karle A, Kelley JL, Kemming N, Kenny P, Kiryluk J, Kislat F, Klein SR, Köhne JH, Kohnen G, Kolanoski H, Köpke L, Kopper S, Koskinen DJ, Kowalski M, Kowarik T, Krasberg M, Krings T, Kroll G, Kuehn K, Kuwabara T, Labare M, Lafebre S, Laihem K, Landsman H, Larson MJ, Lauer R, Lehmann R, Lünemann J, Madsen J, Majumdar P, Marotta A, Maruyama R, Mase K, Matis HS, Meagher K, Merck M, Mészáros P, Meures T, Middell E, Milke N, Miller J, Montaruli T, Morse R, Movit SM, Nahnhauer R, Nam JW, Naumann U, Niessen P, Nygren DR, Odrowski S, Olivas A, Olivo M, O'Murchadha A, Ono M, Panknin S, Paul L, Pérez de los Heros C, Petrovic J, Piegsa A, Pieloth D, Porrata R, Posselt J, Price PB, Prikockis M, Przybylski GT, Rawlins K, Redl P, Resconi E, Rhode W, Ribordy M, Rizzo A, Rodrigues JP, Roth P, Rothmaier F, Rott C, Ruhe T, Rutledge D, Ruzybayev B, Ryckbosch D, Sander HG, Santander M, Sarkar S, Schatto K, Schmidt T, Schoenwald A, Schukraft A, Schultes A, Schulz O, Schunck M, Seckel D, Semburg B, Seo SH, Sestayo Y, Seunarine S, Silvestri A, Slipak A, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stephens G, Stezelberger T, Stokstad RG, Stoyanov S, Strahler EA, Straszheim T, Sullivan GW, Swillens Q, Taavola H, Taboada I, Tamburro A, Tarasova O, Tepe A, Ter-Antonyan S, Tilav S, Toale PA, Toscano S, Tosi D, Turčan D, van Eijndhoven N, Vandenbroucke J, Van Overloop A, van Santen J, Vehring M, Voge M, Voigt B, Walck C, Waldenmaier T, Wallraff M, Walter M, Weaver C, Wendt C, Westerhoff S, Whitehorn N, Wiebe K, Wiebusch CH, Williams DR, Wischnewski R, Wissing H, Wolf M, Woschnagg K, Xu C, Xu XW, Yodh G, Yoshida S, Zarzhitsky P. Limits on neutrino emission from gamma-ray bursts with the 40 string IceCube detector. Phys Rev Lett 2011; 106:141101. [PMID: 21561178 DOI: 10.1103/physrevlett.106.141101] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2011] [Indexed: 05/30/2023]
Abstract
IceCube has become the first neutrino telescope with a sensitivity below the TeV neutrino flux predicted from gamma-ray bursts if gamma-ray bursts are responsible for the observed cosmic-ray flux above 10(18) eV. Two separate analyses using the half-complete IceCube detector, one a dedicated search for neutrinos from pγ interactions in the prompt phase of the gamma-ray burst fireball and the other a generic search for any neutrino emission from these sources over a wide range of energies and emission times, produced no evidence for neutrino emission, excluding prevailing models at 90% confidence.
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Affiliation(s)
- R Abbasi
- Department of Physics, University of Wisconsin, Madison, Wisconsin 53706, USA
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Aharonian F, Akhperjanian AG, Bazer-Bachi AR, Beilicke M, Benbow W, Berge D, Bernlöhr K, Boisson C, Bolz O, Borrel V, Braun I, Breitling F, Brown AM, Bühler R, Büsching I, Carrigan S, Chadwick PM, Chounet LM, Cornils R, Costamante L, Degrange B, Dickinson HJ, Djannati-Ataï A, Drury LO, Dubus G, Egberts K, Emmanoulopoulos D, Espigat P, Feinstein F, Ferrero E, Fiasson A, Fontaine G, Funk S, Funk S, Gallant YA, Giebels B, Glicenstein JF, Goret P, Hadjichristidis C, Hauser D, Hauser M, Heinzelmann G, Henri G, Hermann G, Hinton JA, Hofmann W, Holleran M, Horns D, Jacholkowska A, de Jager OC, Khélifi B, Komin N, Konopelko A, Kosack K, Latham IJ, Le Gallou R, Lemière A, Lemoine-Goumard M, Lohse T, Martin JM, Martineau-Huynh O, Marcowith A, Masterson C, McComb TJL, de Naurois M, Nedbal D, Nolan SJ, Noutsos A, Orford KJ, Osborne JL, Ouchrif M, Panter M, Pelletier G, Pita S, Pühlhofer G, Punch M, Raubenheimer BC, Raue M, Rayner SM, Reimer A, Reimer O, Ripken J, Rob L, Rolland L, Rowell G, Sahakian V, Saugé L, Schlenker S, Schlickeiser R, Schwanke U, Sol H, Spangler D, Spanier F, Steenkamp R, Stegmann C, Superina G, Tavernet JP, Terrier R, Théoret CG, Tluczykont M, van Eldik C, Vasileiadis G, Venter C, Vincent P, Völk HJ, Wagner SJ, Ward M. HESS observations of the galactic center region and their possible dark matter interpretation. Phys Rev Lett 2006; 97:221102. [PMID: 17155788 DOI: 10.1103/physrevlett.97.221102] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2005] [Revised: 08/23/2006] [Indexed: 05/12/2023]
Abstract
The detection of gamma rays from the source HESS J1745-290 in the Galactic Center (GC) region with the High Energy Spectroscopic System (HESS) array of Cherenkov telescopes in 2004 is presented. After subtraction of the diffuse gamma-ray emission from the GC ridge, the source is compatible with a point source with spatial extent less than 1.2;{'}(stat) (95% C.L.). The measured energy spectrum above 160 GeV is compatible with a power law with photon index of 2.25+/-0.04(stat)+/-0.10(syst) and no significant flux variation is detected. It is finally found that the bulk of the very high energy emission must have non-dark-matter origin.
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Affiliation(s)
- F Aharonian
- Max-Planck-Institut für Kernphysik, P.O. Box 103980, D-69029 Heidelberg, Germany
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20
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Affiliation(s)
- M L Smith
- The Wellcome Physiological Research Laboratories, Beckenham, Kent
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21
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Kuida H, Hecht HH, Lange RL, Brown AM, Tsagaris TJ, Thorne JL. BRISKET DISEASE. III. SPONTANEOUS REMISSION OF PULMONARY HYPERTENSION AND RECOVERY FROM HEART FAILURE. J Clin Invest 2006; 42:589-96. [PMID: 16695900 PMCID: PMC289323 DOI: 10.1172/jci104749] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- H Kuida
- Department of Internal Medicine, University of Utah College of Medicine, Salt Lake City, Utah
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22
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Aharonian F, Akhperjanian AG, Bazer-Bachi AR, Beilicke M, Benbow W, Berge D, Bernlöhr K, Boisson C, Bolz O, Borrel V, Braun I, Breitling F, Brown AM, Chadwick PM, Chounet LM, Cornils R, Costamante L, Degrange B, Dickinson HJ, Djannati-Ataï A, Drury LO, Dubus G, Emmanoulopoulos D, Espigat P, Feinstein F, Fontaine G, Fuchs Y, Funk S, Gallant YA, Giebels B, Gillessen S, Glicenstein JF, Goret P, Hadjichristidis C, Hauser D, Hauser M, Heinzelmann G, Henri G, Hermann G, Hinton JA, Hofmann W, Holleran M, Horns D, Jacholkowska A, de Jager OC, Khélifi B, Klages S, Komin N, Konopelko A, Latham IJ, Le Gallou R, Lemière A, Lemoine-Goumard M, Leroy N, Lohse T, Martin JM, Martineau-Huynh O, Marcowith A, Masterson C, McComb TJL, de Naurois M, Nolan SJ, Noutsos A, Orford KJ, Osborne JL, Ouchrif M, Panter M, Pelletier G, Pita S, Pühlhofer G, Punch M, Raubenheimer BC, Raue M, Raux J, Rayner SM, Reimer A, Reimer O, Ripken J, Rob L, Rolland L, Rowell G, Sahakian V, Saugé L, Schlenker S, Schlickeiser R, Schuster C, Schwanke U, Siewert M, Sol H, Spangler D, Steenkamp R, Stegmann C, Tavernet JP, Terrier R, Théoret CG, Tluczykont M, van Eldik C, Vasileiadis G, Venter C, Vincent P, Völk HJ, Wagner SJ. A low level of extragalactic background light as revealed by γ-rays from blazars. Nature 2006; 440:1018-21. [PMID: 16625189 DOI: 10.1038/nature04680] [Citation(s) in RCA: 438] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2005] [Accepted: 02/22/2006] [Indexed: 11/08/2022]
Abstract
The diffuse extragalactic background light consists of the sum of the starlight emitted by galaxies through the history of the Universe, and it could also have an important contribution from the 'first stars', which may have formed before galaxy formation began. Direct measurements are difficult and not yet conclusive, owing to the large uncertainties caused by the bright foreground emission associated with zodiacal light. An alternative approach is to study the absorption features imprinted on the gamma-ray spectra of distant extragalactic objects by interactions of those photons with the background light photons. Here we report the discovery of gamma-ray emission from the blazars H 2356 - 309 and 1ES 1101 - 232, at redshifts z = 0.165 and z = 0.186, respectively. Their unexpectedly hard spectra provide an upper limit on the background light at optical/near-infrared wavelengths that appears to be very close to the lower limit given by the integrated light of resolved galaxies. The background flux at these wavelengths accordingly seems to be strongly dominated by the direct starlight from galaxies, thus excluding a large contribution from other sources-in particular from the first stars formed. This result also indicates that intergalactic space is more transparent to gamma-rays than previously thought.
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Affiliation(s)
- F Aharonian
- Max-Planck-Institut für Kernphysik, PO Box 103980, D 69029 Heidelberg, Germany
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Aharonian F, Akhperjanian AG, Bazer-Bachi AR, Beilicke M, Benbow W, Berge D, Bernlöhr K, Boisson C, Bolz O, Borrel V, Braun I, Breitling F, Brown AM, Chadwick PM, Chounet LM, Cornils R, Costamante L, Degrange B, Dickinson HJ, Djannati-Ataï A, Drury LO, Dubus G, Emmanoulopoulos D, Espigat P, Feinstein F, Fontaine G, Fuchs Y, Funk S, Gallant YA, Giebels B, Gillessen S, Glicenstein JF, Goret P, Hadjichristidis C, Hauser D, Hauser M, Heinzelmann G, Henri G, Hermann G, Hinton JA, Hofmann W, Holleran M, Horns D, Jacholkowska A, de Jager OC, Khélifi B, Klages S, Komin N, Konopelko A, Latham IJ, Le Gallou R, Lemière A, Lemoine-Goumard M, Leroy N, Lohse T, Marcowith A, Martin JM, Martineau-Huynh O, Masterson C, McComb TJL, de Naurois M, Nolan SJ, Noutsos A, Orford KJ, Osborne JL, Ouchrif M, Panter M, Pelletier G, Pita S, Pühlhofer G, Punch M, Raubenheimer BC, Raue M, Raux J, Rayner SM, Reimer A, Reimer O, Ripken J, Rob L, Rolland L, Rowell G, Sahakian V, Saugé L, Schlenker S, Schlickeiser R, Schuster C, Schwanke U, Siewert M, Sol H, Spangler D, Steenkamp R, Stegmann C, Tavernet JP, Terrier R, Théoret CG, Tluczykont M, van Eldik C, Vasileiadis G, Venter C, Vincent P, Völk HJ, Wagner SJ. Discovery of very-high-energy γ-rays from the Galactic Centre ridge. Nature 2006; 439:695-8. [PMID: 16467831 DOI: 10.1038/nature04467] [Citation(s) in RCA: 376] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2005] [Accepted: 11/22/2005] [Indexed: 11/09/2022]
Abstract
The source of Galactic cosmic rays (with energies up to 10(15) eV) remains unclear, although it is widely believed that they originate in the shock waves of expanding supernova remnants. At present the best way to investigate their acceleration and propagation is by observing the gamma-rays produced when cosmic rays interact with interstellar gas. Here we report observations of an extended region of very-high-energy (> 10(11) eV) gamma-ray emission correlated spatially with a complex of giant molecular clouds in the central 200 parsecs of the Milky Way. The hardness of the gamma-ray spectrum and the conditions in those molecular clouds indicate that the cosmic rays giving rise to the gamma-rays are likely to be protons and nuclei rather than electrons. The energy associated with the cosmic rays could have come from a single supernova explosion around 10(4) years ago.
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Affiliation(s)
- F Aharonian
- Max-Planck Institut für Kernphysik, PO Box 103980, D 69029 Heidelberg, Germany
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24
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Aharonian F, Akhperjanian AG, Aye KM, Bazer-Bachi AR, Beilicke M, Benbow W, Berge D, Berghaus P, Bernlöhr K, Boisson C, Bolz O, Borgmeier C, Braun I, Breitling F, Brown AM, Gordo JB, Chadwick PM, Chounet LM, Cornils R, Costamante L, Degrange B, Djannati-Ataï A, Drury LO, Dubus G, Ergin T, Espigat P, Feinstein F, Fleury P, Fontaine G, Funk S, Gallant YA, Giebels B, Gillessen S, Goret P, Hadjichristidis C, Hauser M, Heinzelmann G, Henri G, Hermann G, Hinton JA, Hofmann W, Holleran M, Horns D, de Jager OC, Jung I, Khélifi B, Komin N, Konopelko A, Latham IJ, Le Gallou R, Lemière A, Lemoine M, Leroy N, Lohse T, Marcowith A, Masterson C, McComb TJL, de Naurois M, Nolan SJ, Noutsos A, Orford KJ, Osborne JL, Ouchrif M, Panter M, Pelletier G, Pita S, Pühlhofer G, Punch M, Raubenheimer BC, Raue M, Raux J, Rayner SM, Redondo I, Reimer A, Reimer O, Ripken J, Rob L, Rolland L, Rowell G, Sahakian V, Saugé L, Schlenker S, Schlickeiser R, Schuster C, Schwanke U, Siewert M, Sol H, Steenkamp R, Stegmann C, Tavernet JP, Terrier R, Théoret CG, Tluczykont M, van der Walt DJ, Vasileiadis G, Venter C, Vincent P, Visser B, Völk HJ, Wagner SJ. A new population of very high energy gamma-ray sources in the Milky Way. Science 2005; 307:1938-42. [PMID: 15790849 DOI: 10.1126/science.1108643] [Citation(s) in RCA: 234] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Very high energy gamma-rays probe the long-standing mystery of the origin of cosmic rays. Produced in the interactions of accelerated particles in astrophysical objects, they can be used to image cosmic particle accelerators. A first sensitive survey of the inner part of the Milky Way with the High Energy Stereoscopic System (HESS) reveals a population of eight previously unknown firmly detected sources of very high energy gamma-rays. At least two have no known radio or x-ray counterpart and may be representative of a new class of "dark" nucleonic cosmic ray sources.
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Affiliation(s)
- F Aharonian
- Max-Planck-Institut für Kernphysik, Post Office Box 103980, D-69029 Heidelberg, Germany
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25
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Prior MJW, Brown AM, Mavroudis G, Lister T, Ray DE. MRI characterisation of a novel rat model of focal astrocyte loss. MAGMA 2004; 17:125-32. [PMID: 15592947 DOI: 10.1007/s10334-004-0065-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2004] [Revised: 09/07/2004] [Accepted: 07/27/2004] [Indexed: 12/01/2022]
Abstract
Blood-brain barrier (BBB) integrity is lost in several neurological conditions in which astrocytes are damaged. We studied 3-chloropropanediol-induced focal lesions, a toxicant that induces early astrocytic (but not neuronal) death followed by BBB leakage. T2-weighted images illustrate regional selectivity of the lesions, affected areas including the inferior colliculi and red nuclei. Gd-DTPA intensity quantified the degree of vascular leakage in the lesioned areas. MRI intensity in lesioned areas peaked at 2 days, correlating with BBB breakdown, and diminished thereafter, returning to pre-injection levels by 30 days in parallel with the return of astrocytes. T2 measurements were unchanged at 6 h, a time when astrocyte swelling is marked but the vasculature is intact, but increased at 2 days, consistent with cellular damage and BBB leakage. Gd-DTPA enhancement was also greatest at 2 days then decreased over the next 28 days, indicating a tracer-size-dependent rate of BBB repair. A simple model based on experimentally acquired data indicated that the vascular breakdown was the result of leakage of only a small percentage of blood vessels in the affected areas. Loss of astrocytes contributes to barrier loss, and restoration of astrocytes is needed for full barrier recovery.
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Affiliation(s)
- M J W Prior
- Sir Peter Mansfield Magnetic Resonance Centre, School of Physics and Astronomy, University of Nottingham, Nottingham, UK
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26
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Aharonian FA, Akhperjanian AG, Aye KM, Bazer-Bachi AR, Beilicke M, Benbow W, Berge D, Berghaus P, Bernlöhr K, Bolz O, Boisson C, Borgmeier C, Breitling F, Brown AM, Gordo JB, Chadwick PM, Chitnis VR, Chounet LM, Cornils R, Costamante L, Degrange B, Djannati-Ataï A, Drury LO, Ergin T, Espigat P, Feinstein F, Fleury P, Fontaine G, Funk S, Gallant YA, Giebels B, Gillessen S, Goret P, Guy J, Hadjichristidis C, Hauser M, Heinzelmann G, Henri G, Hermann G, Hinton JA, Hofmann W, Holleran M, Horns D, De Jager OC, Jung I, Khélifi B, Komin N, Konopelko A, Latham IJ, Le Gallou R, Lemoine M, Lemière A, Leroy N, Lohse T, Marcowith A, Masterson C, McComb TJL, De Naurois M, Nolan SJ, Noutsos A, Orford KJ, Osborne JL, Ouchrif M, Panter M, Pelletier G, Pita S, Pohl M, Pühlhofer G, Punch M, Raubenheimer BC, Raue M, Raux J, Rayner SM, Redondo I, Reimer A, Reimer O, Ripken J, Rivoal M, Rob L, Rolland L, Rowell G, Sahakian V, Saugé L, Schlenker S, Schlickeiser R, Schuster C, Schwanke U, Siewert M, Sol H, Steenkamp R, Stegmann C, Tavernet JP, Théoret CG, Tluczykont M, Van Der Walt DJ, Vasileiadis G, Vincent P, Visser B, Völk HJ, Wagner SJ. High-energy particle acceleration in the shell of a supernova remnant. Nature 2004; 432:75-7. [PMID: 15525982 DOI: 10.1038/nature02960] [Citation(s) in RCA: 408] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2004] [Accepted: 08/17/2004] [Indexed: 11/09/2022]
Abstract
A significant fraction of the energy density of the interstellar medium is in the form of high-energy charged particles (cosmic rays). The origin of these particles remains uncertain. Although it is generally accepted that the only sources capable of supplying the energy required to accelerate the bulk of Galactic cosmic rays are supernova explosions, and even though the mechanism of particle acceleration in expanding supernova remnant (SNR) shocks is thought to be well understood theoretically, unequivocal evidence for the production of high-energy particles in supernova shells has proven remarkably hard to find. Here we report on observations of the SNR RX J1713.7 - 3946 (G347.3 - 0.5), which was discovered by ROSAT in the X-ray spectrum and later claimed as a source of high-energy gamma-rays of TeV energies (1 TeV = 10(12) eV). We present a TeV gamma-ray image of the SNR: the spatially resolved remnant has a shell morphology similar to that seen in X-rays, which demonstrates that very-high-energy particles are accelerated there. The energy spectrum indicates efficient acceleration of charged particles to energies beyond 100 TeV, consistent with current ideas of particle acceleration in young SNR shocks.
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Affiliation(s)
- F A Aharonian
- Max-Planck-Institut für Kernphysik, PO Box 103980, D 69029 Heidelberg, Germany
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27
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Brown AM, Janik JM, Murphree ES, King R, Callahan P. Effects of cyclic steroid hormone replacement on prolactin and luteinizing hormone surges in female rats. Reproduction 2004; 128:373-8. [PMID: 15333788 DOI: 10.1530/rep.1.00017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The ability of steroid hormones to produce an LH or prolactin (PRL) surge was determined in rats ovariectomized at 6, 9 or 13 weeks of age and subjected to one, three or six cycles of estrogen and progesterone replacement. Sensitivity to steroid replacement was dependent on the age of the animal at the time of ovariectomy. Repeated cyclic steroid hormone replacement significantly increased the magnitude of the PRL response, but not the LH response, in animals ovariectomized at 6 weeks. The LH response was significantly altered by cyclic steroid replacement only in animals ovariectomized at 13 weeks. These results indicate that the mechanisms involved in the regulation of PRL secretion are influenced by steroid hormone replacement and that cyclic steroid hormone exposure increases the magnitude of the PRL secretory response.
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Affiliation(s)
- A M Brown
- Center for Neuroscience, Department of Zoology, Miami University, Oxford, OH 45056, USA
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28
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Abstract
Early recognition of potential QT/TdP liability is now an essential component of the drug discovery/drug development program. The hERG assay is an indispensable step and a high-quality assay must accompany any investigational new drug (IND) application. While it is the gold standard at present, the hERG assay is too labor-intensive and too low throughput to be used as a screen early in the discovery/development process. A variety of indirect high throughput screens have been used.
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Affiliation(s)
- A M Brown
- MetroHealth Campus, Case Western Rreserve University, Cleveland, OH 44128, USA.
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29
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Kang SJ, Gordon D, Brown AM, Ott J, Finch SJ. Tradeoff between no-call reduction in genotyping error rate and loss of sample size for genetic case/control association studies. Pac Symp Biocomput 2004:116-27. [PMID: 14992497 DOI: 10.1142/9789812704856_0012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
Single nucleotide polymorphisms (SNP) may be genotyped for use in case-control designs to test for association between a SNP marker and a disease using a 2 x 3 chi-squared test of independence. Genotyping is often based on underlying continuous measurements, which are classified into genotypes. A "no-call" procedure is sometimes used in which borderline observations are not classified. This procedure has the simultaneous effect of reducing the genotype error rate and the expected number of genotypes observed. Both quantities affect the power of the statistic. We develop methods for calculating the genotype error rate, the expected number of genotypes observed, and the expected power of the resulting test as a function of the no-call procedure. We examine the statistical properties of the chi-squared test using a no-call procedure when the underlying continuous measure of genotype classification is a three-component mixture of univariate normal distributions under a range of parameter specifications. The genotype error rate decreases as the no-call region is increased. The expected number of observations genotyped also decreases. Our key finding is that the expected power of the chi-squared test is not sensitive to the no-call procedure. That is, the benefits of reduced genotype error rate are almost exactly balanced by the losses due to reduced genotype observations. For an underlying univariate normal mixture of genotype classification to be analyzed with a 2 x 3 chi-squared test, there is little, if any, increase in power using a no-call procedure.
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Affiliation(s)
- S J Kang
- Department of Applied Mathematics and Statistics, State University of New York at Stony Brook, Stony Brook, NY 11794, USA
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30
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Gill D, Juffs HG, Herzig KA, Brown AM, Hawley CM, Cobcroft RG, Petrie JJ, Marlton P, Kennedy G, Thomson DB, Campbell SB, Nicol DL, Norris D, Johnson DW. Durable and high rates of remission following chemotherapy in posttransplantation lymphoproliferative disorders after renal transplantation. Transplant Proc 2003; 35:256-7. [PMID: 12591388 DOI: 10.1016/s0041-1345(02)03796-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- D Gill
- Department of Pathology, Mater Misericordiae Hospital, Brisbane, Australia
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31
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Brown AM, Tekkök SB, Ransom BR. Hypoglycemia and white matter: pathophysiology of axon injury and role of glycogen. Diabetes Nutr Metab 2002; 15:290-3; discussion 293-4. [PMID: 12625471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Affiliation(s)
- A M Brown
- Department of Neurology, University of Washington School of Medicine, Seattle 98195, USA.
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Gibbons GF, Brown AM, Wiggins D, Pease R. The roles of insulin and fatty acids in the regulation of hepatic very-low-density lipoprotein assembly. J R Soc Med 2002; 95 Suppl 42:23-32. [PMID: 12216323 PMCID: PMC1308941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023] Open
Affiliation(s)
- G F Gibbons
- Metabolic Research Laboratory, Oxford Centre for Diabetes, Endocrinology and Metabolism, Nuffield Department of Clinical Medicine, University of Oxford, Radcliffe Infirmary, Woodstock Road, Oxford OX2 6HE, UK.
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33
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Nemeria N, Yan Y, Zhang Z, Brown AM, Arjunan P, Furey W, Guest JR, Jordan F. Inhibition of the Escherichia coli pyruvate dehydrogenase complex E1 subunit and its tyrosine 177 variants by thiamin 2-thiazolone and thiamin 2-thiothiazolone diphosphates. Evidence for reversible tight-binding inhibition. J Biol Chem 2001; 276:45969-78. [PMID: 11583990 DOI: 10.1074/jbc.m104116200] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Variants of the pyruvate dehydrogenase subunit (E1; EC ) of the Escherichia coli pyruvate dehydrogenase multienzyme complex with Y177A and Y177F substitutions were created. Both variants displayed pyruvate dehydrogenase multienzyme complex activity at levels of 11% (Y177A E1) and 7% (Y177F E1) of the parental enzyme. The K(m) values for thiamin diphosphate (ThDP) were 1.58 microm (parental E1) and 6.65 microm (Y177A E1), whereas the Y177F E1 variant was not saturated at 200 microm. According to fluorescence studies, binding of ThDP was unaffected by the Tyr(177) substitutions. The ThDP analogs thiamin 2-thiazolone diphosphate (ThTDP) and thiamin 2-thiothiazolone diphosphate (ThTTDP) behaved as tight-binding inhibitors of parental E1 (K(i) = 0.003 microm for ThTDP and K(i) = 0.064 microm for ThTTDP) and the Y177A and Y177F variants. This analysis revealed that ThTDP and ThTTDP bound to parental E1 via a two-step mechanism, but that ThTDP bound to the Y177A variant via a one-step mechanism. Binding of ThTDP was affected and that of ThTTDP was unaffected by substitutions at Tyr(177). Addition of ThDP or ThTDP to parental E1 resulted in similar CD spectral changes in the near-UV region. In contrast, binding of ThTTDP to either parental E1 or the Y177A and Y177F variants was accompanied by the appearance of a positive band at 330 nm, indicating that ThTTDP was bound in a chiral environment. In combination with x-ray structural evidence on the location of Tyr(177), the kinetic and spectroscopic data suggest that Tyr(177) has a role in stabilization of some transition state(s) in the reaction pathway, starting with the free enzyme and culminating with the first irreversible step (decarboxylation), as well as in reductive acetylation of the dihydrolipoamide acetyltransferase component.
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Affiliation(s)
- N Nemeria
- Department of Chemistry and the Program in Cellular and Molecular Biodynamics, Rutgers University, Newark, New Jersey 07102, USA
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Abstract
We tested the hypothesis that non-glucose energy sources can support axon function in the rat optic nerve. Axon function was assessed by monitoring the stimulus-evoked compound action potential (CAP). CAP was maintained at full amplitude for 2 hr in 10 mM glucose. 20 mM lactate, 20 mM pyruvate, 10 mM fructose, or 10 mM mannose supported axon function as effectively as did glucose, and 10 mM glutamine provided partial support, but beta-hydroxybutyrate, octanoate, sorbitol, alanine, aspartate, and glutamate failed to support axon function. Our results indicated that a variety of compounds can sustain function in CNS myelinated axons. Axons probably use lactate, pyruvate, and glutamine directly as energy substrates, whereas mannose and fructose could be shuttled through astrocytes to lactate, which is then exported to axons.
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Affiliation(s)
- A M Brown
- Department of Neurology, Box 356465, University of Washington School of Medicine, Seattle, WA 98195, USA.
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Abstract
The proper extracytoplasmic localization of proteins is an important aspect of mycobacterial physiology and the pathogenesis of Mycobacterium tuberculosis. The protein export systems of mycobacteria have remained unexplored. The Sec-dependent protein export pathway has been well characterized in Escherichia coli and is responsible for transport across the cytoplasmic membrane of proteins containing signal sequences at their amino termini. SecA is a central component of this pathway, and it is highly conserved throughout bacteria. Here we report on an unusual property of mycobacterial protein export--the presence of two homologues of SecA (SecA1 and SecA2). Using an allelic-exchange strategy in Mycobacterium smegmatis, we demonstrate that secA1 is an essential gene. In contrast, secA2 can be deleted and is the first example of a nonessential secA homologue. The essential nature of secA1, which is consistent with the conserved Sec pathway, leads us to believe that secA1 represents the equivalent of E. coli secA. The results of a phenotypic analysis of a Delta secA2 mutant of M. smegmatis are presented here and also indicate a role for SecA2 in protein export. Based on our study, it appears that SecA2 can assist SecA1 in the export of some proteins via the Sec pathway. However, SecA2 is not the functional equivalent of SecA1. This finding, in combination with the fact that SecA2 is highly conserved throughout mycobacteria, suggests a second role for SecA2. The possibility exists that another role for SecA2 is to export a specific subset of proteins.
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Affiliation(s)
- M Braunstein
- Howard Hughes Medical Institute, Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, New York 10461, USA.
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Ficker E, Jarolimek W, Brown AM. Molecular determinants of inactivation and dofetilide block in ether a-go-go (EAG) channels and EAG-related K(+) channels. Mol Pharmacol 2001; 60:1343-8. [PMID: 11723241 DOI: 10.1124/mol.60.6.1343] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The major subunit of the cardiac delayed rectifier current I(Kr) is encoded by the human ether a-go-go related gene (HERG). HERG/I(Kr) channels are blocked selectively by class III antiarrhythmic methanesulfonanilide drugs such as dofetilide. The binding site for methanesulfonanilides is believed to be similar for nonantiarrhythmic drugs such as antihistamines, antibiotics, and antipsychotics. To gain further insight into the binding site, we examined the minimal structural changes necessary to transform low-affinity binding of dofetilide by the related bovine ether a-go-go channel bEAG to high-affinity binding of HERG. Previously, it was shown that high-affinity binding in HERG required intact C-type inactivation; the bovine ether a-go-go K(+) channel (bEAG), unlike HERG, is noninactivating. Therefore, we introduced C-type inactivation into noninactivating bEAG using site-directed mutagenesis. Two point mutations in the pore region, T432S and A443S, were sufficient to produce C-type inactivation. Low concentrations of dofetilide produced block of bEAG T432S/A443S; unlike HERG, block was almost irreversible. Substitution of an additional amino acid in transmembrane domain S6 made the block reversible. Dofetilide blocked the triply mutated bEAG T432S/A443S/A453S with an IC(50) value of 1.1 microM. The blocking potency was 30-fold greater than bEAG WT and about one third that of HERG WT. We conclude that high affinity methanesulfonanilide binding to HERG channels is strongly dependent on C-type inactivation.
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Affiliation(s)
- E Ficker
- Rammelkamp Center for Education and Research, MetroHealth Campus, Case Western Reserve University, School of Medicine, Cleveland, Ohio 44109-1998, USA.
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37
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Abstract
Occult gastrointestinal bleeding frequently frustrates clinicians' attempts to locate the source. Foci of hemorrhage within the small bowel are often found only at laparotomy and can be attributed to Meckel's diverticula, carcinomas, or less frequently, pulsion-type diverticula. We report our experience with two patients whose jejunal diverticula resulted in recurrent episodes of massive gastrointestinal hemorrhage.
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Affiliation(s)
- H E Rodriguez
- Department of Surgery, Catholic Health Partners, Chicago, Illinois, USA
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Major AS, Dove DE, Ishiguro H, Su YR, Brown AM, Liu L, Carter KJ, Linton MF, Fazio S. Increased cholesterol efflux in apolipoprotein AI (ApoAI)-producing macrophages as a mechanism for reduced atherosclerosis in ApoAI((-/-)) mice. Arterioscler Thromb Vasc Biol 2001; 21:1790-5. [PMID: 11701467 DOI: 10.1161/hq1101.097798] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The concentration of apolipoprotein (apo) AI in the artery wall is thought to enhance cellular cholesterol efflux and protect against atherosclerosis. It has been shown that although macrophages do not make apoAI, they respond to it by increased cholesterol efflux. We hypothesized that macrophage production of apoAI would increase cholesterol efflux and reduce atherogenesis. In this study, we produced mice expressing human apoAI under the control of the macrophage-specific scavenger receptor-A promoter (mphi-AI). Human apoAI was detectable in the serum HDL fraction of mphi-AI transgenic mice at concentrations too low to affect serum cholesterol or HDL levels. Immunoblotting showed the presence of human apoAI in transgenic macrophage culture supernatants, mostly as lipoprotein-free protein, with a small component associated with HDL-like particles. Atherosclerosis studies using apoAI((-/-)) mice transplanted with mphi-AI bone marrow showed that in the absence of macrophage-derived apoE, local expression of apoAI reduced diet-induced lesions in the proximal aorta. Additionally, mphi-AI macrophages showed a 40% increase in cholesterol efflux compared with control macrophages. These data support the hypothesis that apoAI production by macrophages in the artery wall is protective against atherosclerosis. This protection is likely mediated by increased cholesterol efflux and decreased foam cell formation in vivo.
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Affiliation(s)
- A S Major
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
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Kuraguchi M, Yang K, Wong E, Avdievich E, Fan K, Kolodner RD, Lipkin M, Brown AM, Kucherlapati R, Edelmann W. The distinct spectra of tumor-associated Apc mutations in mismatch repair-deficient Apc1638N mice define the roles of MSH3 and MSH6 in DNA repair and intestinal tumorigenesis. Cancer Res 2001; 61:7934-42. [PMID: 11691815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
In mammalian cells, mismatch recognition has been attributed to two partially redundant heterodimeric protein complexes of MutS homologues, MSH2-MSH3 and MSH2-MSH6. We have conducted a comparative analysis of Msh3 and Msh6 deficiency in mouse intestinal tumorigenesis by generating Apc1638N mice deficient in Msh3, Msh6 or both. We have found that Apc1638N mice defective in Msh6 show reduced survival and a 6-7-fold increase in intestinal tumor multiplicity. In contrast, Msh3-deficient Apc1638N mice showed no difference in survival and intestinal tumor multiplicity as compared with Apc1638N mice. However, when Msh3 deficiency is combined with Msh6 deficiency (Msh3(-/-)Msh6(-/-)Apc1638N), the survival rate of the mice was further reduced compared to Msh6(-/-)Apc(1638N) mice because of a high multiplicity of intestinal tumors at a younger age. Almost 90% of the intestinal tumors from both Msh6(-/-)Apc1638N and Msh3(-/-)Msh6(-/-)Apc1638N mice contained truncation mutations in the wild-type Apc allele. Apc mutations in Msh6(-/-)Apc1638N mice consisted predominantly of base substitutions (93%) creating stop codons, consistent with a major role for Msh6 in the repair of base-base mismatches. However, in Msh3(-/-)Msh6(-/-)Apc1638N tumors, we observed a mixture of base substitutions (46%) and frameshifts (54%), indicating that in Msh6(-/-)Apc1638N mice frameshift mutations in the Apc gene were suppressed by Msh3. Interestingly, all except one of the Apc mutations detected in mismatch repair-deficient intestinal tumors were located upstream of the third 20-amino acid beta-catenin binding repeat and before all of the Ser-Ala-Met-Pro repeats, suggesting that there is selection for loss of multiple domains involved in beta-catenin regulation. Our analysis therefore has revealed distinct mutational spectra and clarified the roles of Msh3 and Msh6 in DNA repair and intestinal tumorigenesis.
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Affiliation(s)
- M Kuraguchi
- Strang Cancer Research Laboratory at The Rockefeller University, New York, New York 10021, USA
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40
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Abstract
The murine agouti related protein (mAGRP) is upregulated in obese and diabetic mice and stimulates hyperphagia when administered intracerebroventricularly (i.c.v.) or when overexpressed in transgenic mice. The human ortholog, hAGRP, has been isolated and has similar molecular and physiological properties. Here, we report the complete gene structure of the human AGRP gene and upstream regions with differential promoter activity. A polymorphism, A67T, in the third exon was identified but was not associated with obesity- or type 2 diabetes-related phenotypes. Putative binding sites for transcription factors were identified in the promoter of the gene including recognition sites for the signal transducers and activators of transcription (STATs) that may potentially mediate leptin's action in the hypothalamus. The upstream non-coding exon had significant promoter activity in a periphery- but not so in a hypothalamus-derived cell line, suggesting that it might contain the minimal promoter required for expression of the short transcript of hAGRP in the periphery.
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Affiliation(s)
- A M Brown
- Department of Medicine, Medical University of South Carolina, Strom Thurmond Biomedical Research Center Room 528, 114 Doughty Street, Charleston, SC 29403, USA
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41
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Abstract
LY 294002 (80 micromol/L), an inhibitor of phosphoinositide 3-kinase, was used to investigate the involvement of this enzyme in the insulin-mediated regulation of very low density lipoprotein (VLDL) apolipoprotein B (apoB) output from cultured rat hepatocytes. Newly synthesized apoB was pulse-labeled with [(35)S]methionine and was then allowed to assemble, via an intermediate precursor stage, into mature VLDL during subsequent chase periods. Brefeldin A (BFA, 0.2 microgram/mL) was used to discriminate between the role of insulin in the regulation of the early, compared with the later, events of VLDL assembly, including apoB degradation. Insulin (78 nmol/L), when present during the pulse-labeling and subsequent chase periods, inhibited the secretion of apoB-100 and apoB-48 as VLDL by 53% and 56%, respectively. Degradation of both was concomitantly increased. Secretion of high density lipoprotein apoB, derived from VLDL precursors, was relatively unaffected under these conditions, as was the net synthesis of apoB-100 and apoB-48. The presence of BFA during the pulse-labeling period and subsequent chase period prevented the maturation of VLDL in the insulin-treated and the non-insulin-treated cells. BFA was then removed, allowing the maturation of VLDL to proceed. Removal of insulin at this stage reversed the overall inhibitory effect of insulin. Furthermore, when insulin remained present during this period, the simultaneous presence of LY 294002 also reversed the inhibitory effect of insulin on VLDL apoB output and abolished the increase in apoB degradation. The results suggest that insulin signaling via phosphoinositide 3-kinase inhibited the maturation phase of VLDL assembly by preventing bulk lipid transfer to a VLDL precursor, thus enhancing the degradation of apoB. There was no inhibition of the conversion of newly synthesized apoB into the VLDL precursor form.
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Affiliation(s)
- A M Brown
- Metabolic Research Laboratory, Oxford Centre for Diabetes, Nuffield Department of Clinical Medicine, University of Oxford, Radcliffe Infirmary, Oxford, UK
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Mayfield DK, Brown AM, Page GP, Garvey WT, Shriver MD, Argyropoulos G. A role for the Agouti-Related Protein promoter in obesity and type 2 diabetes. Biochem Biophys Res Commun 2001; 287:568-73. [PMID: 11554767 DOI: 10.1006/bbrc.2001.5600] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The murine Agouti-Related Protein (mAGRP) is upregulated in obese and diabetic mice and can stimulate hyperphagia when overexpressed in transgenic models. Here we report upstream nucleotide sequences of the human hAGRP gene with putative recognition sites for transcription factors including a site for the STAT transactivators. A polymorphism (-38C-->T) was identified in the promoter region and the C/C genotype had significantly higher promoter activity and affinity for transcription factors as tested in periphery- and hypothalamus-derived cell lines. The polymorphic site could affect the expression levels of hAGRP and the high expressing C/C genotype was significantly associated with high BMI and type 2 diabetes in Africans.
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Affiliation(s)
- D K Mayfield
- Department of Medicine, Strom Thurmond Biomedical Research Center, Medical University of South Carolina, 114 Doughty Street, Charleston, South Carolina 29403, USA
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Bhatt V, Monaghan A, Brown AM, Rippin JW. Does the glandular odontogenic cyst require aggressive management? Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2001; 92:249-51. [PMID: 11552137 DOI: 10.1067/moe.2001.116510] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Herdon HJ, Godfrey FM, Brown AM, Coulton S, Evans JR, Cairns WJ. Pharmacological assessment of the role of the glycine transporter GlyT-1 in mediating high-affinity glycine uptake by rat cerebral cortex and cerebellum synaptosomes. Neuropharmacology 2001; 41:88-96. [PMID: 11445189 DOI: 10.1016/s0028-3908(01)00043-0] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Two distinct types of glycine transporter, GlyT-1 and GlyT-2, have been characterised. GlyT-1 and GlyT-2 are known to be differentially expressed amongst CNS areas, but direct functional evidence for their relative contributions to high-affinity glycine uptake by brain tissues is lacking. In the present study, we have used the selective GlyT-1 inhibitor N[3-(4"-fluorophenyl)-3-(4"-phenylphenoxy)propyl]sarcosine (NFPS) to investigate the role of GlyT-1 in mediating glycine uptake. HEK293 cells expressing human GlyT-1c or GlyT-2 showed high levels of Na(+)-dependent glycine uptake, with K(m) values of 117+/-13 and 200+/-22 microM, respectively. NFPS potently inhibited uptake in GlyT-1c cells (IC(50) value 0.22+/-0.03 microM), being around 500-fold more potent than glycine or sarcosine, but had no effect on uptake in GlyT-2 cells (IC(50) >10 microM). Efflux of pre-loaded [3H]-glycine from GlyT-1c cells was increased by glycine or sarcosine, whereas NFPS had no effect on its own but blocked the effects of glycine or sarcosine. These results confirm that NFPS is a potent, selective and non-transportable GlyT-1 inhibitor. Rat cortex and cerebellum synaptosomes also showed a high-affinity Na(+)-dependent component of glycine uptake, with affinities similar to those observed for uptake in GlyT-1c or GlyT-2 cells. In cortex synaptosomes, NFPS and sarcosine produced the same maximal inhibition of uptake as glycine itself. However, in cerebellum synaptosomes, the maximal inhibition produced by NFPS and sarcosine was only half that produced by glycine. In both tissues NFPS was around 1000-fold more potent than glycine or sarcosine. Overall, our findings indicate that high-affinity glycine uptake in cerebral cortex occurs predominantly via GlyT-1. However, in cerebellum, only a part of the high-affinity uptake is mediated by GlyT-1, with the remaining NFPS-insensitive component most likely mediated by GlyT-2.
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Affiliation(s)
- H J Herdon
- Neuroscience Research, GlaxoSmithKline, Harlow, Essex CM19 5AW, UK.
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45
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Abstract
KChAP and voltage-dependent K+ (Kv) beta-subunits are two different types of cytoplasmic proteins that interact with Kv channels. KChAP acts as a chaperone for Kv2.1 and Kv4.3 channels. It also binds to Kv1.x channels but, with the exception of Kv1.3, does not increase Kv1.x currents. Kvbeta-subunits are assembled with Kv1.x channels; they exhibit "chaperone-like" behavior and change gating properties. In addition, KChAP and Kvbeta-subunits interact with each other. Here we examine the consequences of this interaction on Kv currents in Xenopus oocytes injected with different combinations of cRNAs, including Kvbeta1.2, KChAP, and either Kv1.4, Kv1.5, Kv2.1, or Kv4.3. We found that KChAP attenuated the depression of Kv1.5 currents produced by Kvbeta1.2, and Kvbeta1.2 eliminated the increase of Kv2.1 and Kv4.3 currents produced by KChAP. Both KChAP and Kvbeta1.2 are expressed in cardiomyocytes, where Kv1.5 and Kv2.1 produce sustained outward currents and Kv4.3 and Kv1.4 generate transient outward currents. Because they interact, either KChAP or Kvbeta1.2 may alter both sustained and transient cardiac Kv currents. The interaction of these two different classes of modulatory proteins may constitute a novel mechanism for regulating cardiac K+ currents.
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Affiliation(s)
- Y A Kuryshev
- The Rammelkamp Center for Education and Research, MetroHealth Campus, Cleveland, Ohio 44109, USA
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Howe LR, Crawford HC, Subbaramaiah K, Hassell JA, Dannenberg AJ, Brown AM. PEA3 is up-regulated in response to Wnt1 and activates the expression of cyclooxygenase-2. J Biol Chem 2001; 276:20108-15. [PMID: 11274170 DOI: 10.1074/jbc.m010692200] [Citation(s) in RCA: 94] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
The inducible prostaglandin synthase cyclooxygenase-2 (COX-2) is aberrantly expressed in intestinal tumors resulting from APC mutation, and is also transcriptionally up-regulated in mouse mammary epithelial cells in response to Wnt1 expression. beta-Catenin stabilization is a consequence of both APC mutation and Wnt signaling. We have previously observed coordinate regulation of the matrilysin promoter by beta-catenin and Ets family transcription factors of the PEA3 subfamily. Here we show that while beta-catenin only weakly activates the COX-2 promoter, PEA3 family transcription factors are potent activators of COX-2 transcription. Consistent with this, PEA3 is up-regulated in Wnt1-expressing mouse mammary epithelial cells, and PEA3 factors are highly expressed in tumors from Wnt1 transgenic mice, in which Cox-2 is also up-regulated. Promoter mapping experiments suggest that the NF-IL6 site in the COX-2 promoter is important for mediating PEA3 responsiveness. The NF-IL6 site is also important for COX-2 transcription in some colorectal cancer lines (Shao, J., Sheng, H., Inoue, H., Morrow, J. D., and DuBois, R. N. (2000) J. Biol. Chem. 275, 33951-33956), and PEA3 factors are highly expressed in colorectal cancer cell lines. Therefore, we speculate that PEA3 factors may contribute to the up-regulation of COX-2 expression resulting from both APC mutation and Wnt1 expression.
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Affiliation(s)
- L R Howe
- Department of Cell Biology and Anatomy, Weill Medical College of Cornell University, New York, New York 10021, USA
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47
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Abstract
Cyclooxygenase-2 (COX-2), an inducible prostaglandin synthase, is normally expressed in parts of the kidney and brain. Aberrant COX-2 expression was first reported in colorectal carcinomas and adenomas, and has now been detected in various human cancers, including those of the breast. Strikingly, COX-2 overexpression in murine mammary gland is sufficient to cause tumour formation. To date, the role of COX-2 in tumorigenesis has been most intensively studied in the colon. Thus, the relationship between COX-2 and neoplasia can best be illustrated with reference to intestinal tumorigenesis. Here we consider the potential utility of selective COX-2 inhibitors for the prevention and treatment of breast cancer. Data for cancers of the colon and breast are compared where possible. In addition, the mechanisms by which COX-2 is upregulated in cancers and contributes to tumorigenesis are discussed. Importantly, several recent studies of mammary tumorigenesis in animal models have found selective COX-2 inhibitors to be effective in the prevention and treatment of breast cancer. Clinical trials will be needed to determine whether COX-2 inhibition represents a useful approach to preventing or treating human breast cancer.
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Affiliation(s)
- L R Howe
- Strang Cancer Research Laboratory, Rockefeller University, Box 231, 1230 York Avenue, New York, New York 10021, USA.
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Brown AM. A step-by-step guide to non-linear regression analysis of experimental data using a Microsoft Excel spreadsheet. Comput Methods Programs Biomed 2001; 65:191-200. [PMID: 11339981 DOI: 10.1016/s0169-2607(00)00124-3] [Citation(s) in RCA: 157] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The objective of this present study was to introduce a simple, easily understood method for carrying out non-linear regression analysis based on user input functions. While it is relatively straightforward to fit data with simple functions such as linear or logarithmic functions, fitting data with more complicated non-linear functions is more difficult. Commercial specialist programmes are available that will carry out this analysis, but these programmes are expensive and are not intuitive to learn. An alternative method described here is to use the SOLVER function of the ubiquitous spreadsheet programme Microsoft Excel, which employs an iterative least squares fitting routine to produce the optimal goodness of fit between data and function. The intent of this paper is to lead the reader through an easily understood step-by-step guide to implementing this method, which can be applied to any function in the form y=f(x), and is well suited to fast, reliable analysis of data in all fields of biology.
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Affiliation(s)
- A M Brown
- Department of Neurology, Box 356465, University of Washington School of Medicine, Seattle, WA 98195-6465, USA.
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Thomas D, Wendt-Nordahl G, Röckl K, Ficker E, Brown AM, Kiehn J. High-affinity blockade of human ether-a-go-go-related gene human cardiac potassium channels by the novel antiarrhythmic drug BRL-32872. J Pharmacol Exp Ther 2001; 297:753-61. [PMID: 11303067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
Human ether-a-go-go-related gene (HERG) potassium channels are one primary target for the pharmacological treatment of cardiac arrhythmias by class III antiarrhythmic drugs. These drugs are characterized by high antiarrhythmic efficacy, but they can also initiate life-threatening "torsade de pointes" tachyarrhythmias. Recently, it has been suggested that combining potassium and calcium channel blocking mechanisms reduces the proarrhythmic potential of selective class III antiarrhythmic agents. BRL-32872 is a novel antiarrhythmic drug that inhibits potassium and calcium currents in isolated cardiomyocytes. In our study, we investigated the effects of BRL-32872 on cloned HERG channels heterologously expressed in Xenopus oocytes. Using the two-microelectrode voltage clamp technique, we found that BRL-32872 caused a high-affinity, state-dependent block of open HERG channels (IC(50) = 241 nM) in a frequency-dependent manner with slow unbinding kinetics. Inactivated channels mainly had to open to be blocked by BRL-32872. The HERG S620T mutant channel, which has a strongly reduced degree of inactivation, was 51-fold less sensitive to BRL-32872 block, indicating that BRL-32872 binding was enhanced by the inactivation process. In an additional approach, we studied HERG channels expressed in a human cell line (HEK 293) using the whole-cell patch-clamp technique. BRL-32872 inhibited HERG currents in HEK 293 cells in a dose-dependent manner, with an IC(50) value of 19.8 nM. We conclude that BRL-32872 is a potent blocker of HERG potassium channels, which accounts for the class III antiarrhythmic action of BRL-32872.
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Affiliation(s)
- D Thomas
- Department of Cardiology, Medical University Hospital Heidelberg, Heidelberg, Germany
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50
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Abstract
Parkinson's disease (PD) is a major cause of age-related morbidity and mortality, present in nearly 1% of individuals at ages 70-79 and approximately 2.5% of individuals at age 85. L-DOPA (L-dihydroxyphenylalanine), which is metabolized to dopamine by dopa decarboxylase, is the primary therapy for PD, but may also contribute to disease progression. Association between mitochondrial dysfunction, monoamine oxidase (MAO) activity, and dopaminergic neurotoxicity has been repeatedly observed, but the mechanisms underlying selective dopaminergic neuron depletion in aging and neurodegenerative disorders remain unclear. We now report that 3,4-dihydroxyphenylacetaldehyde (DOPAL), the MAO metabolite of dopamine, is more cytotoxic in neuronally differentiated PC12 cells than dopamine and several of its metabolites. In isolated, energetically compromised mitochondria, physiological concentrations of DOPAL induced the permeability transition (PT), a trigger for cell death. Dopamine was > 1000-fold less potent. PT inhibitors protected both mitochondria and cells against DOPAL. Sensitivity to DOPAL was reduced > or = 30-fold in fully energized mitochondria, suggesting that mitochondrial respiration may increase resistance to PT induction by the endogenous DOPAL in the substantia nigra. These data provide a potential mechanism of action for L-DOPA-mediated neurotoxicity and suggest two potentially interactive mechanisms for the selective vulnerability of neurons exposed to dopamine.
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Affiliation(s)
- B S Kristal
- Dementia Research Service, Burke Medical Research Institute, White Plains, NY 10605, USA.
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