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Dissipative Ion-Acoustic Solitary Waves in Magnetized κ-Distributed Non-Maxwellian Plasmas. PHYSICS 2022. [DOI: 10.3390/physics4010007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The propagation of dissipative electrostatic (ion-acoustic) solitary waves in a magnetized plasma with trapped electrons is considered via the Schamel formalism. The direction of propagation is assumed to be arbitrary, i.e., oblique with respect to the magnetic field, for generality. A non-Maxwellian (nonthermal) two-component plasma is considered, consisting of an inertial ion fluid, assumed to be cold for simplicity, and electrons. A (kappa) κ-type distribution is adopted for the electron population, in addition to particle trapping taken into account in phase space. A damped version of the Schamel-type equation is derived for the electrostatic potential, and its analytical solution, representing a damped solitary wave, is used to examine the nonlinear features of dissipative ion-acoustic solitary waves in the presence of trapped electrons. The influence of relevant plasma configuration parameters, namely the percentage of trapped electrons, the electron superthermality (spectral) index, and the direction of propagation on the solitary wave characteristics is investigated.
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Vogt MF, Connerney JEP, DiBraccio GA, Wilson RJ, Thomsen MF, Ebert RW, Clark GB, Paranicas C, Kurth WS, Allegrini F, Valek PW, Bolton SJ. Magnetotail Reconnection at Jupiter: A Survey of Juno Magnetic Field Observations. JOURNAL OF GEOPHYSICAL RESEARCH. SPACE PHYSICS 2020; 125:e2019JA027486. [PMID: 32874821 DOI: 10.1029/2018ja026169] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 07/29/2019] [Indexed: 05/24/2023]
Abstract
At Jupiter, tail reconnection is thought to be driven by an internal mass loading and release process called the Vasyliunas cycle. Galileo data have shown hundreds of reconnection events occurring in Jupiter's magnetotail. Here we present a survey of reconnection events observed by Juno during its first 16 orbits of Jupiter (July 2016-October 2018). The events are identified using Juno magnetic field data, which facilitates comparison to the Vogt et al. (2010, https://doi.org/10.1029/2009JA015098) survey of reconnection events from Galileo magnetometer data, but we present data from Juno's other particle and fields instruments for context. We searched for field dipolarizations or reversals and found 232 reconnection events in the Juno data, most of which featured an increase in |B θ |, the magnetic field meridional component, by a factor of 3 over background values. We found that most properties of the Juno reconnection events, like their spatial distribution and duration, are comparable to Galileo, including the presence of a ~3-day quasi-periodicity in the recurrence of Juno tail reconnection events and in Juno JEDI, JADE, and Waves data. However, unlike with Galileo we were unable to clearly define a statistical x-line separating planetward and tailward Juno events. A preliminary analysis of plasma velocities during five magnetic field reconnection events showed that the events were accompanied by fast radial flows, confirming our interpretation of these magnetic signatures as reconnection events. We anticipate that a future survey covering other Juno datasets will provide additional insight into the nature of tail reconnection at Jupiter.
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Affiliation(s)
- Marissa F Vogt
- Center for Space Physics, Boston University, Boston, MA, USA
| | | | | | - Rob J Wilson
- Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO, USA
| | | | - Robert W Ebert
- Southwest Research Institute, San Antonio, TX, USA
- Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, TX, USA
| | - George B Clark
- The Johns Hopkins University Applied Physics Laboratory, Johns Hopkins University, Laurel, MD, USA
| | - Christopher Paranicas
- The Johns Hopkins University Applied Physics Laboratory, Johns Hopkins University, Laurel, MD, USA
| | - William S Kurth
- Department of Physics and Astronomy, University of Iowa, Iowa City, IA, USA
| | - Frédéric Allegrini
- Southwest Research Institute, San Antonio, TX, USA
- Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, TX, USA
| | - Phil W Valek
- Southwest Research Institute, San Antonio, TX, USA
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Rehman U. Resistive drift instabilities for thermal and non-thermal electron distributions in electron-ion plasma. Heliyon 2019; 4:e01096. [PMID: 30619959 PMCID: PMC6312873 DOI: 10.1016/j.heliyon.2018.e01096] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 12/14/2018] [Accepted: 12/21/2018] [Indexed: 12/01/2022] Open
Abstract
Local dispersion relations for resistive drift mode in a nonuniform magnetize plasma are derived for thermal and non-thermal distribution of electrons. The coupled mode equations are obtained by using Braginskii's transport equations for ions and electrons with thermal as well as non-thermal (Cairns and kappa) distribution for electrons. The dispersion relations are then analyzed both analytically as well as numerically for all distributions. It is found that growth rate is highest for Maxwellian, Intermediate for kappa and lowest for Cairns distribution. It has been found that increasing values of Γ (which estimate population of non-thermal electrons) for Cairn distributed electrons are able to stabilize the mode. Furthermore, increasing the values of κ (which is spectral index) for the kappa distributed electrons have destabilizing effects on the mode. The result might be useful in the interpretation of electromagnetic fluctuations in nonuniform magneto-plasma in which resistivity is a key element in calculation of drift instabilities in the presence of thermal or nonthermal electron distributions, such systems are extensively observed in laboratory as well as space plasma.
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Affiliation(s)
- Umer Rehman
- CAS Key Laboratory of Geospace Environment, University of Science and Technology of China, Hefei, 230026, PR China.,Department of Engineering and Applied Physics, University of Science and Technology of China, Hefei, 230026, PR China
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Khan MY, Iqbal J. Energy of nonlinear electron acoustic solitons in electron positron ion plasma. CHAOS, SOLITONS & FRACTALS 2018; 107:156-160. [DOI: 10.1016/j.chaos.2018.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/22/2024]
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Ourabah K, Ait Gougam L, Tribeche M. Nonthermal and suprathermal distributions as a consequence of superstatistics. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2015; 91:012133. [PMID: 25679596 DOI: 10.1103/physreve.91.012133] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2014] [Indexed: 06/04/2023]
Abstract
We propose to put the well-known nonthermal and suprathermal empirical distributions, used in plasma physics, onto a more rigorous foundation. Their use is frequently criticized because of a lack of formal derivation and physical explanation. A connection between these non-Maxwellian distributions and the Beck-Cohen superstatistics is suggested. They are perceived as a consequence of typical temperature fluctuations. We show that the suprathermal distribution is generated by the Γ distribution of the inverse temperature, in the same way as the Tsallis q statistics. The nonthermal distribution also follows from the χ(2) distribution, with a small variance. Our contribution provides a possible physical meaning for these ad hoc distributions.
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Affiliation(s)
- Kamel Ourabah
- Plasma Physics Group, Theoretical Physics Laboratory, Faculty of Physics, University of Bab-Ezzouar,USTHB, B. P. 32, El Alia, Algiers 16111, Algeria
| | - Leila Ait Gougam
- Plasma Physics Group, Theoretical Physics Laboratory, Faculty of Physics, University of Bab-Ezzouar,USTHB, B. P. 32, El Alia, Algiers 16111, Algeria
| | - Mouloud Tribeche
- Plasma Physics Group, Theoretical Physics Laboratory, Faculty of Physics, University of Bab-Ezzouar,USTHB, B. P. 32, El Alia, Algiers 16111, Algeria
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Birmingham TJ, Alexander JK, Desch MD, Hubbard RF, Pedersen BM. Observations of electron gyroharmonic waves and the structure of the Io torus. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja086ia10p08497] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Sittler EC, Ogilvie KW, Selesnick R. Survey of electrons in the Uranian magnetosphere: Voyager 2 observations. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja092ia13p15263] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Bagenal F, Sullivan JD. Direct plasma measurements in the Io torus and inner magnetosphere of Jupiter. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja086ia10p08447] [Citation(s) in RCA: 253] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Hartle RE, Sittler EC, Ogilvie KW, Scudder JD, Lazarus AJ, Atreya SK. Titan's ion exosphere observed from Voyager 1. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja087ia03p01383] [Citation(s) in RCA: 148] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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11
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Broadfoot AL, Sandel BR, Shemansky DE, McConnell JC, Smith GR, Holberg JB, Atreya SK, Donahue TM, Strobel DF, Bertaux JL. Overview of the Voyager ultraviolet spectrometry results through Jupiter encounter. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja086ia10p08259] [Citation(s) in RCA: 215] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Boischot A, Lecacheux A, Kaiser ML, Desch MD, Alexander JK, Warwick JW. Radio Jupiter after Voyager: An overview of the planetary radio astronomy observations. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja086ia10p08213] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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13
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Eviatar A, Barbosa DD. Jovian magnetospheric neutral wind and auroral precipitation flux. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja089ia09p07393] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Sittler EC, Ogilvie KW, Scudder JD. Survey of low-energy plasma electrons in Saturn's magnetosphere: Voyagers 1 and 2. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja088ia11p08847] [Citation(s) in RCA: 201] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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McNutt RL, Belcher JW, Bridge HS. Positive ion observations in the middle magnetosphere of Jupiter. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja086ia10p08319] [Citation(s) in RCA: 162] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Gurnett DA, Scarf FL, Kurth WS, Shaw RR, Poynter RL. Determination of Jupiter's electron density profile from plasma wave observations. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja086ia10p08199] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Nonlinear Propagation of Ion-Acoustic Shock waves in Dissipative Electron–Positron–Ion Plasmas with Superthermal Electrons and Relativistic Ions. JOURNAL OF FUSION ENERGY 2012. [DOI: 10.1007/s10894-012-9543-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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19
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Bagenal F, Delamere PA. Flow of mass and energy in the magnetospheres of Jupiter and Saturn. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010ja016294] [Citation(s) in RCA: 222] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Fran Bagenal
- Laboratory for Atmospheric and Space Physics; University of Colorado at Boulder; Boulder Colorado USA
| | - Peter A. Delamere
- Laboratory for Atmospheric and Space Physics; University of Colorado at Boulder; Boulder Colorado USA
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Ray LC, Ergun RE, Delamere PA, Bagenal F. Magnetosphere-ionosphere coupling at Jupiter: Effect of field-aligned potentials on angular momentum transport. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2010ja015423] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- L. C. Ray
- Laboratory for Atmospheric and Space Physics; University of Colorado at Boulder; Boulder Colorado USA
| | - R. E. Ergun
- Laboratory for Atmospheric and Space Physics; University of Colorado at Boulder; Boulder Colorado USA
| | - P. A. Delamere
- Laboratory for Atmospheric and Space Physics; University of Colorado at Boulder; Boulder Colorado USA
| | - F. Bagenal
- Laboratory for Atmospheric and Space Physics; University of Colorado at Boulder; Boulder Colorado USA
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Rymer AM, Mauk BH, Hill TW, Paranicas C, André N, Sittler EC, Mitchell DG, Smith HT, Johnson RE, Coates AJ, Young DT, Bolton SJ, Thomsen MF, Dougherty MK. Electron sources in Saturn's magnetosphere. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2006ja012017] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- A. M. Rymer
- Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
| | - B. H. Mauk
- Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
| | - T. W. Hill
- Department of Physics and Astronomy; Rice University; Houston Texas USA
| | - C. Paranicas
- Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
| | - N. André
- Research and Scientific Support Department; European Space Agency; Noordwijk Netherlands
| | - E. C. Sittler
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
| | - D. G. Mitchell
- Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
| | - H. T. Smith
- University of Virginia; Charlottesville Virginia USA
| | - R. E. Johnson
- University of Virginia; Charlottesville Virginia USA
| | - A. J. Coates
- Mullard Space Science Laboratory; University College London; London UK
| | - D. T. Young
- Southwest Research Institute; San Antonio Texas USA
| | - S. J. Bolton
- Southwest Research Institute; San Antonio Texas USA
| | - M. F. Thomsen
- Space and Atmospheric Science Group; Los Alamos National Laboratory; Los Alamos New Mexico USA
| | - M. K. Dougherty
- Department of Space and Atmospheric Physics; Imperial College London; London UK
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22
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Gustin J, Cowley SWH, Gérard JC, Gladstone GR, Grodent D, Clarke JT. Characteristics of Jovian morning bright FUV aurora from Hubble Space Telescope/Space Telescope Imaging Spectrograph imaging and spectral observations. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2006ja011730] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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23
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Cowley SWH, Alexeev II, Belenkaya ES, Bunce EJ, Cottis CE, Kalegaev VV, Nichols JD, Prangé R, Wilson FJ. A simple axisymmetric model of magnetosphere-ionosphere coupling currents in Jupiter's polar ionosphere. ACTA ACUST UNITED AC 2005. [DOI: 10.1029/2005ja011237] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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24
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Gustin J. Energy-flux relationship in the FUV Jovian aurora deduced from HST-STIS spectral observations. ACTA ACUST UNITED AC 2004. [DOI: 10.1029/2003ja010365] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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25
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26
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Szego K. Cassini plasma spectrometer measurements of Jovian bow shock structure. ACTA ACUST UNITED AC 2003. [DOI: 10.1029/2002ja009517] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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27
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28
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Frank LA, Paterson WR. Galileo observations of electron beams and thermal ions in Jupiter's magnetosphere and their relationship to the auroras. ACTA ACUST UNITED AC 2002. [DOI: 10.1029/2001ja009150] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- L. A. Frank
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - W. R. Paterson
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
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29
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Frank LA, Paterson WR. Observations of plasmas in the Io torus with the Galileo spacecraft. ACTA ACUST UNITED AC 2000. [DOI: 10.1029/1999ja000250] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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30
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Frank LA, Paterson WR. Intense electron beams observed at Io with the Galileo spacecraft. ACTA ACUST UNITED AC 1999. [DOI: 10.1029/1999ja900402] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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31
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Schreier R, Eviatar A, Vasyliūnas VM. A two-dimensional model of plasma transport and chemistry in the Jovian magnetosphere. ACTA ACUST UNITED AC 1998. [DOI: 10.1029/98je00697] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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32
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Tsurutani BT, Arballo JK, Goldstein BE, Ho CM, Lakhina GS, Smith EJ, Cornilleau-Wehrlin N, Prangé R, Lin N, Kellogg P, Phillips JL, Balogh A, Krupp N, Kane M. Plasma wave characteristics of the Jovian magnetopause boundary layer: Relationship to the Jovian aurora? ACTA ACUST UNITED AC 1997. [DOI: 10.1029/96ja02785] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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33
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Leamon RJ, Dougherty MK, Southwood DJ, Haynes PL. Magnetic nulls in the outer magnetosphere of Jupiter: Detections by Pioneer and Voyager spacecraft. ACTA ACUST UNITED AC 1995. [DOI: 10.1029/94ja01963] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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34
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Huang TS, Birmingham TJ. The polarization electric field and its effects in an anisotropic rotating magnetospheric plasma. ACTA ACUST UNITED AC 1992. [DOI: 10.1029/91ja02611] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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35
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Zhang M, Richardson JD, Sittler EC. Voyager 2 electron observations in the magnetosphere of Neptune. ACTA ACUST UNITED AC 1991. [DOI: 10.1029/91ja01857] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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36
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Schwartz SJ, Thomsen MF, Bame SJ, Stansberry J. Electron heating and the potential jump across fast mode shocks. ACTA ACUST UNITED AC 1988. [DOI: 10.1029/ja093ia11p12923] [Citation(s) in RCA: 151] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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37
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Shemansky DE. Energy branching in the Io plasma torus: The failure of neutral cloud theory. ACTA ACUST UNITED AC 1988. [DOI: 10.1029/ja093ia03p01773] [Citation(s) in RCA: 79] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Abstract
Much has been learned about the electromagnetic interaction between Jupiter and its satellite Io from in situ observations. Io, in its motion through the Io plasma torus at Jupiter, continuously generates an Alfvén wing that carries two billion kilowatts of power into the jovian ionosphere. Concurrently, Io is acted upon by a J x B force tending to propel it out of the jovian system. The energy source for these processes is the rotation of Jupiter. This unusual planet-satellite coupling serves as an archetype for the interaction of a large moving conductor with a magnetized plasma, a problem of general space and astrophysical interest.
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39
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Bagenal F, Belcher JW, Sittler EC, Lepping RP. The Uranian bow shock: Voyager 2 inbound observations of a high Mach number shock. ACTA ACUST UNITED AC 1987. [DOI: 10.1029/ja092ia08p08603] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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40
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41
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Thomsen MF, Mellott MM, Stansberry JA, Bame SJ, Gosling JT, Russell CT. Strong electron heating at the Earth's bow shock. ACTA ACUST UNITED AC 1987. [DOI: 10.1029/ja092ia09p10119] [Citation(s) in RCA: 58] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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43
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Smith CW, Lee MA. Coupled hydromagnetic wave excitation and ion acceleration upstream of the Jovian bow shock. ACTA ACUST UNITED AC 1986. [DOI: 10.1029/ja091ia01p00081] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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44
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45
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Barbosa DD. Thermalization of neutral-beam-injected ions by lower hybrid waves in Jupiter's magnetosphere. PHYSICAL REVIEW LETTERS 1985; 54:1160-1162. [PMID: 10030947 DOI: 10.1103/physrevlett.54.1160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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46
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Moreno MA, Newman WI, Kivelson MG. Ion partitioning in the hot Io torus: The influence of S2outgassing. ACTA ACUST UNITED AC 1985. [DOI: 10.1029/ja090ia12p12065] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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47
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48
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Abstract
Voyager 1 carried a diverse collection of magnetospheric probes through the inner Jovian magnetosphere in March 1979. The ensuing data analysis and theoretical investigation provided a comprehensive description of the Jovian nebula, a luminous torus populated with newly released heavy ions drawn from Io's surface. Recent refinements in Earth-based imaging instrumentation are used to extend the Voyager in situ picture in temporal and spatial coverage. An analysis of [SIII] and [SII] optical emissions observed during the Jovian apparitions of 1981 through 1983 reveals three distinct torus components. Regularities have been identified in the ion partitioning and ion densities in the hot outer and inner tori, sharply defined radial structure is found in the plasma near Io, and the relative permanence of the cool inner torus is inferred. An extended cloud of neutral material is required as a source of fresh ions in the nebula.
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49
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Fairfield DH, Viñas AF. The inner edge of the plasma sheet and the diffuse aurora. ACTA ACUST UNITED AC 1984. [DOI: 10.1029/ja089ia02p00841] [Citation(s) in RCA: 63] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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50
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