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Zhou Y, Raptis S, Wang S, Shen C, Ren N, Ma L. Magnetosheath jets at Jupiter and across the solar system. Nat Commun 2024; 15:4. [PMID: 38195592 PMCID: PMC10776788 DOI: 10.1038/s41467-023-43942-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 11/23/2023] [Indexed: 01/11/2024] Open
Abstract
The study of jets in the Earth's magnetosheath has been a subject of extensive investigation for over a decade due to their profound impact on the geomagnetic environment and their close connection with shock dynamics. While the variability of the solar wind and its interaction with Earth's magnetosphere provide valuable insights into jets across a range of parameters, a broader parameter space can be explored by examining the magnetosheath of other planets. Here we report the existence of anti-sunward and sunward jets in the Jovian magnetosheath and show their close association with magnetic discontinuities. The anti-sunward jets are possibly generated by a shock-discontinuity interaction. Finally, through a comparative analysis of jets observed at Earth, Mars, and Jupiter, we show that the size of jets scales with the size of bow shock.
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Affiliation(s)
- Yufei Zhou
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, China
| | - Savvas Raptis
- Applied Physics Laboratory, Johns Hopkins University, Laurel, MD, USA
| | - Shan Wang
- Institute of Space Physics and Applied Technology, Peking University, Beijing, China
| | - Chao Shen
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, China.
| | - Nian Ren
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, China
- School of Physics and Electronic Science, Hunan Institute of Science and Technology, Yueyang, China
| | - Lan Ma
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, China
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Wellbrock A, Coates AJ, Sillanpää I, Jones GH, Arridge CS, Lewis GR, Young DT, Crary FJ, Aylward AD. Cassini observations of ionospheric photoelectrons at large distances from Titan: Implications for Titan's exospheric environment and magnetic tail. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/2011ja017113] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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3
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Sillanpää I, Young DT, Crary F, Thomsen M, Reisenfeld D, Wahlund JE, Bertucci C, Kallio E, Jarvinen R, Janhunen P. Cassini Plasma Spectrometer and hybrid model study on Titan's interaction: Effect of oxygen ions. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2011ja016443] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- I. Sillanpää
- Space Science and Engineering Division; Southwest Research Institute; San Antonio Texas USA
| | - D. T. Young
- Space Science and Engineering Division; Southwest Research Institute; San Antonio Texas USA
| | - F. Crary
- Space Science and Engineering Division; Southwest Research Institute; San Antonio Texas USA
| | - M. Thomsen
- Los Alamos National Laboratory; Los Alamos New Mexico USA
| | - D. Reisenfeld
- Department of Physics and Astronomy; University of Montana; Missoula Montana USA
| | | | - C. Bertucci
- Institute for Astronomy and Space Physics; Buenos Aires Argentina
| | - E. Kallio
- Finnish Meteorological Institute; Helsinki Finland
| | - R. Jarvinen
- Finnish Meteorological Institute; Helsinki Finland
| | - P. Janhunen
- Finnish Meteorological Institute; Helsinki Finland
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4
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Ågren K, Andrews DJ, Buchert SC, Coates AJ, Cowley SWH, Dougherty MK, Edberg NJT, Garnier P, Lewis GR, Modolo R, Opgenoorth H, Provan G, Rosenqvist L, Talboys DL, Wahlund JE, Wellbrock A. Detection of currents and associated electric fields in Titan's ionosphere from Cassini data. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010ja016100] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- K. Ågren
- Swedish Institute of Space Physics; Uppsala Sweden
- Department of Physics and Astronomy; University of Leicester; Leicester UK
| | - D. J. Andrews
- Department of Physics and Astronomy; University of Leicester; Leicester UK
| | | | | | - S. W. H. Cowley
- Department of Physics and Astronomy; University of Leicester; Leicester UK
| | | | | | | | - G. R. Lewis
- Mullard Space Science Laboratory; Dorking UK
| | - R. Modolo
- UVSQ/LATMOS-IPSL/CNRS-INSU; Guyancourt France
| | | | - G. Provan
- Department of Physics and Astronomy; University of Leicester; Leicester UK
| | | | - D. L. Talboys
- Department of Physics and Astronomy; University of Leicester; Leicester UK
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Westlake JH, Bell JM, Waite JH, Johnson RE, Luhmann JG, Mandt KE, Magee BA, Rymer AM. Titan's thermospheric response to various plasma environments. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010ja016251] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- J. H. Westlake
- Department of Physics and Astronomy; University of Texas at San Antonio; San Antonio Texas USA
| | - J. M. Bell
- Space Science and Engineering Division; Southwest Research Institute; San Antonio Texas USA
| | - J. H. Waite
- Department of Physics and Astronomy; University of Texas at San Antonio; San Antonio Texas USA
- Space Science and Engineering Division; Southwest Research Institute; San Antonio Texas USA
| | - R. E. Johnson
- Engineering Physics Program; University of Virginia; Charlottesville Virginia USA
| | - J. G. Luhmann
- Space Sciences Laboratory; University of California; Berkeley California USA
| | - K. E. Mandt
- Space Science and Engineering Division; Southwest Research Institute; San Antonio Texas USA
- Department of Environmental and Civil Engineering; University of Texas at San Antonio; San Antonio Texas USA
| | - B. A. Magee
- Space Science and Engineering Division; Southwest Research Institute; San Antonio Texas USA
| | - A. M. Rymer
- Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
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Wei HY, Russell CT, Dougherty MK, Neubauer FM, Ma YJ. Upper limits on Titan's magnetic moment and implications for its interior. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009je003538] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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7
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Cravens TE, Richard M, Ma YJ, Bertucci C, Luhmann JG, Ledvina S, Robertson IP, Wahlund JE, Ågren K, Cui J, Muller-Wodarg I, Waite JH, Dougherty M, Bell J, Ulusen D. Dynamical and magnetic field time constants for Titan's ionosphere: Empirical estimates and comparisons with Venus. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009ja015050] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- T. E. Cravens
- Department of Physics and Astronomy; University of Kansas; Lawrence Kansas USA
| | - M. Richard
- Department of Physics and Astronomy; University of Kansas; Lawrence Kansas USA
| | - Y.-J. Ma
- Institute of Geophysics and Planetary Physics; University of California; Los Angeles California USA
| | - C. Bertucci
- Instituto de Astronomía y Física del Espacio; Buenos Aires Argentina
| | - J. G. Luhmann
- Space Sciences Laboratory; University of California; Berkeley California USA
| | - S. Ledvina
- Space Sciences Laboratory; University of California; Berkeley California USA
| | - I. P. Robertson
- Department of Physics and Astronomy; University of Kansas; Lawrence Kansas USA
| | | | - K. Ågren
- Swedish Institute of Space Physics; Uppsala Sweden
| | - J. Cui
- Space and Atmospheric Physics Group, Blackett Laboratory; Imperial College London; London UK
| | - I. Muller-Wodarg
- Space and Atmospheric Physics Group, Blackett Laboratory; Imperial College London; London UK
| | - J. H. Waite
- Southwest Research Institute; San Antonio Texas USA
| | - M. Dougherty
- Space and Atmospheric Physics Group, Blackett Laboratory; Imperial College London; London UK
| | - J. Bell
- Southwest Research Institute; San Antonio Texas USA
| | - D. Ulusen
- Space Sciences Laboratory; University of California; Berkeley California USA
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Coates AJ, Wellbrock A, Lewis GR, Jones GH, Young DT, Crary FJ, Waite JH, Johnson RE, Hill TW, Sittler Jr. EC. Negative ions at Titan and Enceladus: recent results. Faraday Discuss 2010; 147:293-305; discussion 379-403. [DOI: 10.1039/c004700g] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ma YJ, Russell CT, Nagy AF, Toth G, Bertucci C, Dougherty MK, Neubauer FM, Wellbrock A, Coates AJ, Garnier P, Wahlund JE, Cravens TE, Crary FJ. Time-dependent global MHD simulations of Cassini T32 flyby: From magnetosphere to magnetosheath. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2008ja013676] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Y. J. Ma
- Institute of Geophysics and Planetary Physics; University of California Los Angeles; Los Angeles California USA
| | - C. T. Russell
- Institute of Geophysics and Planetary Physics; University of California Los Angeles; Los Angeles California USA
| | - A. F. Nagy
- Department of Atmospheric, Oceanic and Space Sciences; University of Michigan; Ann Arbor Michigan USA
| | - G. Toth
- Department of Atmospheric, Oceanic and Space Sciences; University of Michigan; Ann Arbor Michigan USA
| | - C. Bertucci
- Blackett Laboratory, Space and Atmospheric Physics Group; Imperial College London; London UK
| | - M. K. Dougherty
- Blackett Laboratory, Space and Atmospheric Physics Group; Imperial College London; London UK
| | - F. M. Neubauer
- Institute of Geophysics and Meteorology; University of Cologne; Cologne Germany
| | - A. Wellbrock
- Mullard Space Science Laboratory, Department of Space and Climate Physics; University College London; London UK
| | - A. J. Coates
- Mullard Space Science Laboratory, Department of Space and Climate Physics; University College London; London UK
| | - P. Garnier
- Swedish Institute of Space Physics; Uppsala Sweden
| | | | - T. E. Cravens
- Department of Physics and Astronomy; University of Kansas; Lawrence Kansas USA
| | - F. J. Crary
- Southwest Research Institute; San Antonio Texas USA
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Bertucci CL. Characteristics and variability of Titan's magnetic environment. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2009; 367:789-798. [PMID: 19073462 DOI: 10.1098/rsta.2008.0250] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The structure and variability of Saturn's magnetic field in the vicinity of Titan's orbit is studied. In the dawn magnetosphere, the magnetic field presents a significant radial component directed towards Saturn, suggesting that Titan is usually located below the planet's warped and dynamic magnetodisc. Also, a non-negligible component along the co-rotation direction suggests that Saturn's magnetic field lines close to the magnetodisc are being swept back from their respective magnetic meridians. In the noon sector, Titan seems to be closer to the magnetodisc central current sheet, as the field lines in this region seem to be more dipolar. The distance between the central current sheet and Titan depends mainly on the solar wind pressure. Also, delta|B|/|B| approximately 0.5 amplitude waveforms at periods close to Saturn's kilometric radiation period are present in the background magnetic field. This modulation in the field is ubiquitous in Saturn's magnetosphere and associated with the presence of a rotating asymmetry in the planet's magnetic field.
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Affiliation(s)
- César L Bertucci
- Space and Atmospheric Physics Group, Imperial College London, London SW7 2BZ, UK.
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Coates AJ. Interaction of Titan's ionosphere with Saturn's magnetosphere. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2009; 367:773-788. [PMID: 19073464 DOI: 10.1098/rsta.2008.0248] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Titan is the only Moon in the Solar System with a significant permanent atmosphere. Within this nitrogen-methane atmosphere, an ionosphere forms. Titan has no significant magnetic dipole moment, and is usually located inside Saturn's magnetosphere. Atmospheric particles are ionized both by sunlight and by particles from Saturn's magnetosphere, mainly electrons, which reach the top of the atmosphere. So far, the Cassini spacecraft has made over 45 close flybys of Titan, allowing measurements in the ionosphere and the surrounding magnetosphere under different conditions. Here we review how Titan's ionosphere and Saturn's magnetosphere interact, using measurements from Cassini low-energy particle detectors. In particular, we discuss ionization processes and ionospheric photoelectrons, including their effect on ion escape from the ionosphere. We also discuss one of the unexpected discoveries in Titan's ionosphere, the existence of extremely heavy negative ions up to 10000amu at 950km altitude.
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Affiliation(s)
- Andrew J Coates
- Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking RH5 6NT, UK.
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Astronomy: Fossils on Titan. Nature 2008. [DOI: 10.1038/455266c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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