1
|
Kurth WS, Sulaiman AH, Hospodarsky GB, Menietti JD, Mauk BH, Clark G, Allegrini F, Valek P, Connerney JEP, Waite JH, Bolton SJ, Imai M, Santolik O, Li W, Duling S, Saur J, Louis C. Juno Plasma Wave Observations at Ganymede. Geophys Res Lett 2022; 49:e2022GL098591. [PMID: 37034392 PMCID: PMC10078157 DOI: 10.1029/2022gl098591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/22/2022] [Accepted: 04/27/2022] [Indexed: 06/19/2023]
Abstract
The Juno Waves instrument measured plasma waves associated with Ganymede's magnetosphere during its flyby on 7 June, day 158, 2021. Three distinct regions were identified including a wake, and nightside and dayside regions in the magnetosphere distinguished by their electron densities and associated variability. The magnetosphere includes electron cyclotron harmonic emissions including a band at the upper hybrid frequency, as well as whistler-mode chorus and hiss. These waves likely interact with energetic electrons in Ganymede's magnetosphere by pitch angle scattering and/or accelerating the electrons. The wake is accentuated by low-frequency turbulence and electrostatic solitary waves. Radio emissions observed before and after the flyby likely have their source in Ganymede's magnetosphere.
Collapse
Affiliation(s)
- W. S. Kurth
- Department of Physics and AstronomyUniversity of IowaIowa CityIAUSA
| | - A. H. Sulaiman
- Department of Physics and AstronomyUniversity of IowaIowa CityIAUSA
| | | | - J. D. Menietti
- Department of Physics and AstronomyUniversity of IowaIowa CityIAUSA
| | - B. H. Mauk
- The Johns Hopkins University Applied Physics LaboratoryLaurelMDUSA
| | - G. Clark
- The Johns Hopkins University Applied Physics LaboratoryLaurelMDUSA
| | - F. Allegrini
- Southwest Research InstituteSan AntonioTXUSA
- Department of Physics and AstronomyUniversity of Texas at San AntonioSan AntonioTXUSA
| | - P. Valek
- Southwest Research InstituteSan AntonioTXUSA
| | | | - J. H. Waite
- Southwest Research InstituteSan AntonioTXUSA
| | | | - M. Imai
- Department of Electrical Engineering and Information ScienceNational Institute of Technology (KOSEN), Niihama CollegeNiihamaJapan
| | - O. Santolik
- Department of Space PhysicsInstitute of Atmospheric Physics of the Czech Academy of SciencesPragueCzechia
- Faculty of Mathematics and PhysicsCharles UniversityPragueCzechia
| | - W. Li
- Center for Space PhysicsBoston UniversityBostonMAUSA
| | - S. Duling
- Institute of Geophysics and MeteorologyUniversity of CologneCologneGermany
| | - J. Saur
- Institute of Geophysics and MeteorologyUniversity of CologneCologneGermany
| | - C. Louis
- School of Cosmic Physics, DIAS Dunsink ObservatoryDublin Institute for Advanced StudiesDublinIreland
| |
Collapse
|
2
|
Wu SY, Ye SY, Fischer G, Taubenschuss U, Jackman CM, O'Dwyer E, Kurth WS, Yao S, Yao ZH, Menietti JD, Xu Y, Long MY, Cecconi B. Saturn Anomalous Myriametric Radiation, a New Type of Saturn Radio Emission Revealed by Cassini. Geophys Res Lett 2022; 49:e2022GL099237. [PMID: 36249464 PMCID: PMC9541930 DOI: 10.1029/2022gl099237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 07/28/2022] [Accepted: 08/01/2022] [Indexed: 06/16/2023]
Abstract
A new radio component namely Saturn Anomalous Myriametric Radiation (SAM) is reported. A total of 193 SAM events have been identified by using all the Cassini Saturn orbital data. SAM emissions are L-O mode radio emission and occasionally accompanied by a first harmonic in R-X mode. SAM's intensities decrease with increasing distance from Saturn, suggesting a source near Saturn. SAM has a typical central frequency near 13 kHz, a bandwidth greater than 8 kHz and usually drifts in frequency over time. SAM's duration can extend to near 11 hr and even longer. These features distinguish SAM from the regular narrowband emissions observed in the nearby frequency range, hence the name anomalous. The high occurrence rate of SAM after low frequency extensions of Saturn Kilometric Radiation and the SAM cases observed during compressions of Saturn's magnetosphere suggest a special connection to solar wind dynamics and magnetospheric conditions at Saturn.
Collapse
Affiliation(s)
- S. Y. Wu
- Department of Earth and Space SciencesSouthern University of Science and TechnologyShenzhenPeople's Republic of China
- LESIAObservatoire de ParisUniversité PSLCNRSSorbonne UniversitéUniversité de ParisMeudonFrance
| | - S. Y. Ye
- Department of Earth and Space SciencesSouthern University of Science and TechnologyShenzhenPeople's Republic of China
| | - G. Fischer
- Space Research InstituteAustrian Academy of SciencesGrazAustria
| | - U. Taubenschuss
- Department of Space PhysicsInstitute of Atmospheric Physics of the Czech Academy of SciencesPragueCzechia
| | - C. M. Jackman
- School of Cosmic PhysicsDIAS Dunsink ObservatoryDublin Institute for Advanced StudiesDublinIreland
| | - E. O'Dwyer
- School of Cosmic PhysicsDIAS Dunsink ObservatoryDublin Institute for Advanced StudiesDublinIreland
| | - W. S. Kurth
- Department of Physics and AstronomyUniversity of IowaIowa CityIAUSA
| | - S. Yao
- School of Geophysics and Information TechnologyChina University of Geosciences (Beijing)BeijingPeople's Republic of China
| | - Z. H. Yao
- Key Laboratory of Earth and Planetary PhysicsInstitute of Geology and GeophysicsChinese Academy of SciencesBeijingPeople's Republic of China
| | - J. D. Menietti
- Department of Physics and AstronomyUniversity of IowaIowa CityIAUSA
| | - Y. Xu
- Key Laboratory of Earth and Planetary PhysicsInstitute of Geology and GeophysicsChinese Academy of SciencesBeijingPeople's Republic of China
| | - M. Y. Long
- Department of Space PhysicsSchool of Electronic InformationWuhan UniversityWuhanPeople's Republic of China
| | - B. Cecconi
- LESIAObservatoire de ParisUniversité PSLCNRSSorbonne UniversitéUniversité de ParisMeudonFrance
| |
Collapse
|
3
|
Wu SY, Ye SY, Fischer G, Jackman CM, Wang J, Menietti JD, Cecconi B, Long MY. Reflection and Refraction of the L-O Mode 5 kHz Saturn Narrowband Emission by the Magnetosheath. Geophys Res Lett 2022; 49:e2021GL096990. [PMID: 35859935 PMCID: PMC9285440 DOI: 10.1029/2021gl096990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 02/10/2022] [Accepted: 02/12/2022] [Indexed: 06/15/2023]
Abstract
The reflection-by-sheath mechanism of 5 kHz narrowband emissions (NB) at Saturn is confirmed by Cassini observations during several crossings of the magnetopause, which show that the 5 kHz NB can be prevented from escaping Saturn's magnetosphere. The L-O mode 5 kHz NB remained visible in areas of low plasma density but disappeared in regions of high plasma density. In three cases, NB disappeared immediately after the crossings of Saturn's magnetopause. A possible reflected NB event observed near the magnetosheath is discussed. This mechanism can help explain the 5 kHz NB observed at low latitudes outside the Enceladus plasma torus and their upper frequency limit variations. This mechanism significantly improves the current understanding of the 5 kHz NB.
Collapse
Affiliation(s)
- S. Y. Wu
- Department of Earth and Space SciencesSouthern University of Science and TechnologyShenzhenPeople's Republic of China
| | - S. Y. Ye
- Department of Earth and Space SciencesSouthern University of Science and TechnologyShenzhenPeople's Republic of China
| | - G. Fischer
- Space Research InstituteAustrian Academy of SciencesGrazAustria
| | - C. M. Jackman
- School of Cosmic PhysicsDublin Institute for Advanced StudiesDublinIreland
| | - J. Wang
- Department of Earth and Space SciencesSouthern University of Science and TechnologyShenzhenPeople's Republic of China
| | - J. D. Menietti
- Department of Physics and AstronomyUniversity of IowaIowa CityIAUSA
| | - B. Cecconi
- LESIA, Observatoire de ParisUniversité PSLCNRSSorbonne UniversitéUniversité de Paris MeudonParisFrance
| | - M. Y. Long
- Department of Space PhysicsSchool of Electronic InformationWuhan UniversityWuhanPeople's Republic of China
| |
Collapse
|
4
|
Woodfield EE, Glauert SA, Menietti JD, Horne RB, Kavanagh AJ, Shprits YY. Acceleration of Electrons by Whistler-Mode Hiss Waves at Saturn. Geophys Res Lett 2022; 49:e2021GL096213. [PMID: 35864852 PMCID: PMC9286411 DOI: 10.1029/2021gl096213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 12/01/2021] [Accepted: 12/27/2021] [Indexed: 06/15/2023]
Abstract
Plasmaspheric hiss waves at the Earth are well known for causing losses of electrons from the radiation belts through wave particle interactions. At Saturn, however, we show that the different plasma density environment leads to acceleration of the electrons rather than loss. The ratio of plasma frequency to electron gyrofrequency frequently falls below one creating conditions for hiss to accelerate electrons. The location of hiss at high latitudes (>25°) coincides very well with this region of very low density. The interaction between electrons and hiss only occurs at these higher latitudes, therefore the acceleration is limited to mid to low pitch angles leading to butterfly pitch angle distributions. The hiss is typically an order of magnitude stronger than chorus at Saturn and the resulting acceleration is rapid, approaching steady state in one day at 0.4 MeV at L = 7 and the effect is stronger with increasing L-shell.
Collapse
|
5
|
Woodfield EE, Glauert SA, Menietti JD, Averkamp TF, Horne RB, Shprits YY. Rapid Electron Acceleration in Low-Density Regions of Saturn's Radiation Belt by Whistler Mode Chorus Waves. Geophys Res Lett 2019; 46:7191-7198. [PMID: 31598019 PMCID: PMC6772095 DOI: 10.1029/2019gl083071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 05/30/2019] [Accepted: 06/17/2019] [Indexed: 06/10/2023]
Abstract
Electron acceleration at Saturn due to whistler mode chorus waves has previously been assumed to be ineffective; new data closer to the planet show it can be very rapid (factor of 104 flux increase at 1 MeV in 10 days compared to factor of 2). A full survey of chorus waves at Saturn is combined with an improved plasma density model to show that where the plasma frequency falls below the gyrofrequency additional strong resonances are observed favoring electron acceleration. This results in strong chorus acceleration between approximately 2.5 R S and 5.5 R S outside which adiabatic transport may dominate. Strong pitch angle dependence results in butterfly pitch angle distributions that flatten over a few days at 100s keV, tens of days at MeV energies which may explain observations of butterfly distributions of MeV electrons near L=3. Including cross terms in the simulations increases the tendency toward butterfly distributions.
Collapse
Affiliation(s)
| | | | - J. D. Menietti
- Department of Physics and AstronomyUniversity of IowaIowa CityIAUSA
| | - T. F. Averkamp
- Department of Physics and AstronomyUniversity of IowaIowa CityIAUSA
| | | | - Y. Y. Shprits
- Helmholtz Centre Potsdam, GFZ German Research Centre for GeosciencesPotsdamGermany
- Institute for Physics and AstronomyUniversität PotsdamPotsdamGermany
- Department of Earth, Planetary, and Space SciencesUniversity of CaliforniaLos AngelesCAUSA
| |
Collapse
|
6
|
Woodfield EE, Horne RB, Glauert SA, Menietti JD, Shprits YY, Kurth WS. Formation of electron radiation belts at Saturn by Z-mode wave acceleration. Nat Commun 2018; 9:5062. [PMID: 30498204 PMCID: PMC6265320 DOI: 10.1038/s41467-018-07549-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 11/07/2018] [Indexed: 11/16/2022] Open
Abstract
At Saturn electrons are trapped in the planet's magnetic field and accelerated to relativistic energies to form the radiation belts, but how this dramatic increase in electron energy occurs is still unknown. Until now the mechanism of radial diffusion has been assumed but we show here that in-situ acceleration through wave particle interactions, which initial studies dismissed as ineffectual at Saturn, is in fact a vital part of the energetic particle dynamics there. We present evidence from numerical simulations based on Cassini spacecraft data that a particular plasma wave, known as Z-mode, accelerates electrons to MeV energies inside 4 RS (1 RS = 60,330 km) through a Doppler shifted cyclotron resonant interaction. Our results show that the Z-mode waves observed are not oblique as previously assumed and are much better accelerators than O-mode waves, resulting in an electron energy spectrum that closely approaches observed values without any transport effects included.
Collapse
Affiliation(s)
- E E Woodfield
- British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET, UK.
| | - R B Horne
- British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
| | - S A Glauert
- British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
| | - J D Menietti
- Department of Physics and Astronomy, University of Iowa, Iowa City, IA, 52242, USA
| | - Y Y Shprits
- Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Potsdam, 14473, Germany
- Institute for Physics and Astronomy, Universität Potsdam, 14469, Potsdam, Germany
- Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, CA, 90095, USA
| | - W S Kurth
- Department of Physics and Astronomy, University of Iowa, Iowa City, IA, 52242, USA
| |
Collapse
|
7
|
Morioka A, Miyoshi Y, Kitamura N, Misawa H, Tsuchiya F, Menietti JD, Honary F. Fundamental characteristics of field-aligned auroral acceleration derived from AKR spectra. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/2011ja017137] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
8
|
Affiliation(s)
- J. D. Menietti
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - R. L. Mutel
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - P. Schippers
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - S.-Y. Ye
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - D. A. Gurnett
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - L. Lamy
- LESIA, Observatoire de Paris; Université Paris Diderot, UPMC, CNRS; Meudon France
| |
Collapse
|
9
|
Schippers P, Arridge CS, Menietti JD, Gurnett DA, Lamy L, Cecconi B, Mitchell DG, André N, Kurth WS, Grimald S, Dougherty MK, Coates AJ, Krupp N, Young DT. Auroral electron distributions within and close to the Saturn kilometric radiation source region. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2011ja016461] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- P. Schippers
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - C. S. Arridge
- Mullard Space Science Laboratory; University College London; Holmbury St. Mary UK
- Centre for Planetary Sciences at UCL/Birkbeck; London WC1E 6BT UK
| | - J. D. Menietti
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - D. A. Gurnett
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - L. Lamy
- Department of Space and Atmospheric Physics; Imperial College; London UK
- LESIA, CNRS; Observatoire de Meudon; Meudon France
| | - B. Cecconi
- LESIA, CNRS; Observatoire de Meudon; Meudon France
| | - D. G. Mitchell
- Applied Physics Laboratory; Johns Hopkins University; Laurel Maryland USA
| | - N. André
- Centre d'Étude Spatiale des Rayonnements; Université de Toulouse, UPS; Toulouse France
- CNRS UMR 5187; Toulouse France
| | - W. S. Kurth
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - S. Grimald
- Centre d'Étude Spatiale des Rayonnements; Université de Toulouse, UPS; Toulouse France
- CNRS UMR 5187; Toulouse France
| | - M. K. Dougherty
- Department of Space and Atmospheric Physics; Imperial College; London UK
| | - A. J. Coates
- Mullard Space Science Laboratory; University College London; Holmbury St. Mary UK
- Centre for Planetary Sciences at UCL/Birkbeck; London WC1E 6BT UK
| | - N. Krupp
- Max-Planck-Institut fur Sonnensystemforschung; Katlenburg-Lindau Germany
| | - D. T. Young
- Southwest Research Institute; San Antonio Texas USA
| |
Collapse
|
10
|
Ye SY, Menietti JD, Fischer G, Wang Z, Cecconi B, Gurnett DA, Kurth WS. Z mode waves as the source of Saturn narrowband radio emissions. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009ja015167] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sheng-Yi Ye
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - J. D. Menietti
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - G. Fischer
- Space Research Institute; Austrian Academy of Sciences; Graz Austria
| | - Z. Wang
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | | | - D. A. Gurnett
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - W. S. Kurth
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| |
Collapse
|
11
|
Ye SY, Gurnett DA, Fischer G, Cecconi B, Menietti JD, Kurth WS, Wang Z, Hospodarsky GB, Zarka P, Lecacheux A. Source locations of narrowband radio emissions detected at Saturn. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2008ja013855] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sheng-Yi Ye
- Department of Physics and Astronomy; University of Iowa; Iowa City USA
| | - D. A. Gurnett
- Department of Physics and Astronomy; University of Iowa; Iowa City USA
| | - G. Fischer
- Department of Physics and Astronomy; University of Iowa; Iowa City USA
- Space Research Institute; Austrian Academy of Sciences; Graz Austria
| | | | - J. D. Menietti
- Department of Physics and Astronomy; University of Iowa; Iowa City USA
| | - W. S. Kurth
- Department of Physics and Astronomy; University of Iowa; Iowa City USA
| | - Z. Wang
- Department of Physics and Astronomy; University of Iowa; Iowa City USA
| | - G. B. Hospodarsky
- Department of Physics and Astronomy; University of Iowa; Iowa City USA
| | - P. Zarka
- Observatoire de Paris; Meudon France
| | | |
Collapse
|
12
|
Menietti JD, Ye SY, Yoon PH, Santolik O, Rymer AM, Gurnett DA, Coates AJ. Analysis of narrowband emission observed in the Saturn magnetosphere. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2008ja013982] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- J. D. Menietti
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - S.-Y. Ye
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - P. H. Yoon
- Institute for Physical Science and Technology; University of Maryland; College Park Maryland USA
| | - O. Santolik
- Faculty of Mathematics and Physics; Charles University; Prague Czech Republic
- Institute of Atmospheric Physics; Prague Czech Republic
| | - A. M. Rymer
- Applied Physics Laboratory; Johns Hopkins University; Laurel Maryland USA
| | - D. A. Gurnett
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - A. J. Coates
- Mullard Space Science Laboratory; University College London; Dorking UK
| |
Collapse
|
13
|
Hospodarsky GB, Averkamp TF, Kurth WS, Gurnett DA, Menietti JD, Santolik O, Dougherty MK. Observations of chorus at Saturn using the Cassini Radio and Plasma Wave Science instrument. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2008ja013237] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- G. B. Hospodarsky
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - T. F. Averkamp
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - W. S. Kurth
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - D. A. Gurnett
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - J. D. Menietti
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - O. Santolik
- Faculty of Mathematics and Physics; Charles University; Prague Czech Republic
- Institute of Atmospheric Physics; Czech Academay of Sciences; Prague Czech Republic
| | - M. K. Dougherty
- Blackett Laboratory, Department of Space and Atmospheric Physics; Imperial College London; London UK
| |
Collapse
|
14
|
Morioka A, Miyoshi Y, Tsuchiya F, Misawa H, Yumoto K, Parks GK, Anderson RR, Menietti JD, Donovan EF, Honary F, Spanswick E. AKR breakup and auroral particle acceleration at substorm onset. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2008ja013322] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- A. Morioka
- Planetary Plasma and Atmospheric Research Center; Tohoku University; Sendai Japan
| | - Y. Miyoshi
- Solar-Terrestrial Environment Laboratory; Nagoya University; Nagoya Japan
| | - F. Tsuchiya
- Planetary Plasma and Atmospheric Research Center; Tohoku University; Sendai Japan
| | - H. Misawa
- Planetary Plasma and Atmospheric Research Center; Tohoku University; Sendai Japan
| | - K. Yumoto
- Space Environment Research Center; Kyushu University; Fukuoka Japan
| | - G. K. Parks
- Space Sciences Laboratory; University of California; Berkeley California USA
| | - R. R. Anderson
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - J. D. Menietti
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - E. F. Donovan
- Department of Physics and Astronomy; University of Calgary; Calgary, Alberta Canada
| | - F. Honary
- Department of Communication Systems; Lancaster University; Lancaster UK
| | - E. Spanswick
- Department of Physics and Astronomy; University of Calgary; Calgary, Alberta Canada
| |
Collapse
|
15
|
Menietti JD, Santolik O, Rymer AM, Hospodarsky GB, Persoon AM, Gurnett DA, Coates AJ, Young DT. Analysis of plasma waves observed within local plasma injections seen in Saturn's magnetosphere. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2007ja012856] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- J. D. Menietti
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - O. Santolik
- Institute of Atmospheric Physics; ASCR, and Charles University; Prague Czech Republic
| | - A. M. Rymer
- Johns Hopkins University, Applied Physics Laboratory; Laurel Maryland USA
| | - G. B. Hospodarsky
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - A. M. Persoon
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - D. A. Gurnett
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - A. J. Coates
- University College London, Mullard Space Science Laboratory; Dorking UK
| | - D. T. Young
- Southwest Research Institute; San Antonio Texas USA
| |
Collapse
|
16
|
Menietti JD, Groene JB, Averkamp TF, Hospodarsky GB, Kurth WS, Gurnett DA, Zarka P. Influence of Saturnian moons on Saturn kilometric radiation. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2007ja012331] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- J. D. Menietti
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - J. B. Groene
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - T. F. Averkamp
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - G. B. Hospodarsky
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - W. S. Kurth
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - D. A. Gurnett
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - P. Zarka
- Observatoire de Paris; Meudon France
| |
Collapse
|
17
|
Morioka A, Miyoshi Y, Tsuchiya F, Misawa H, Sakanoi T, Yumoto K, Anderson RR, Menietti JD, Donovan EF. Dual structure of auroral acceleration regions at substorm onsets as derived from auroral kilometric radiation spectra. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2006ja012186] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- A. Morioka
- Planetary Plasma and Atmospheric Research Center; Tohoku University; Sendai Japan
| | - Y. Miyoshi
- Solar-Terrestrial Environment Laboratory; Nagoya University; Nagoya Japan
| | - F. Tsuchiya
- Planetary Plasma and Atmospheric Research Center; Tohoku University; Sendai Japan
| | - H. Misawa
- Planetary Plasma and Atmospheric Research Center; Tohoku University; Sendai Japan
| | - T. Sakanoi
- Planetary Plasma and Atmospheric Research Center; Tohoku University; Sendai Japan
| | - K. Yumoto
- Space Environment Research Center; Kyushu University; Fukuoka Japan
| | - R. R. Anderson
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - J. D. Menietti
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - E. F. Donovan
- Department of Physics and Astronomy; University of Calgary; Calgary, Alberta Canada
| |
Collapse
|
18
|
|
19
|
Weimer DR, Gurnett DA, Goertz CK, Menietti JD, Burch JL, Sugiura M. The current-voltage relationship in auroral current sheets. ACTA ACUST UNITED AC 1987. [DOI: 10.1029/ja092ia01p00187] [Citation(s) in RCA: 62] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
20
|
Gallagher DL, Menietti JD, Burch JL, Persoon AM, Waite JH, Chappell CR. Evidence of high densities and ion outflows in the polar cap during the recovery phase. ACTA ACUST UNITED AC 1986. [DOI: 10.1029/ja091ia03p03321] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
21
|
Burch JL, Reiff PH, Menietti JD, Heelis RA, Hanson WB, Shawhan SD, Shelley EG, Sugiura M, Weimer DR, Winningham JD. IMFBy-dependent plasma flow and Birkeland currents in the dayside magnetosphere: 1. Dynamics Explorer observations. ACTA ACUST UNITED AC 1985. [DOI: 10.1029/ja090ia02p01577] [Citation(s) in RCA: 189] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
22
|
Menietti JD, Green JL, Gulkis S, Six NF. Jovian decametric arcs: An estimate of the required wave normal angles from three-dimensional ray tracing. ACTA ACUST UNITED AC 1984. [DOI: 10.1029/ja089ia10p09089] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
23
|
Gurnett DA, Huff RL, Menietti JD, Burch JL, Winningham JD, Shawhan SD. Correlated low-frequency electric and magnetic noise along the auroral field lines. ACTA ACUST UNITED AC 1984. [DOI: 10.1029/ja089ia10p08971] [Citation(s) in RCA: 189] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|