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Cohen IJ, Rymer AM. Cross-NASA divisional relevance of an Ice Giant mission. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2020; 378:20200222. [PMID: 33161860 PMCID: PMC7658787 DOI: 10.1098/rsta.2020.0222] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/04/2020] [Indexed: 05/20/2023]
Abstract
Robotic space exploration to the outer solar system is difficult and expensive and the space science community works inventively and collaboratively to maximize the scientific return of missions. A mission to either of our solar system Ice Giants, Uranus and Neptune, will provide numerous opportunities to address high-level science objectives relevant to multiple disciplines and deliberate cross-disciplinary mission planning should ideally be woven in from the start. In this review, we recount past successes as well as (NASA-focused) challenges in performing cross-disciplinary science from robotic space exploration missions and detail the opportunities for broad-reaching science objectives from potential future missions to the Ice Giants. This article is part of a discussion meeting issue 'Future exploration of ice giant systems'.
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2
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Mura A, Adriani A, Connerney JEP, Bolton S, Altieri F, Bagenal F, Bonfond B, Dinelli BM, Gérard JC, Greathouse T, Grodent D, Levin S, Mauk B, Moriconi ML, Saur J, Waite JH, Amoroso M, Cicchetti A, Fabiano F, Filacchione G, Grassi D, Migliorini A, Noschese R, Olivieri A, Piccioni G, Plainaki C, Sindoni G, Sordini R, Tosi F, Turrini D. Juno observations of spot structures and a split tail in Io-induced aurorae on Jupiter. Science 2018; 361:774-777. [PMID: 29976795 DOI: 10.1126/science.aat1450] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 06/15/2018] [Indexed: 11/02/2022]
Abstract
Jupiter's aurorae are produced in its upper atmosphere when incoming high-energy electrons precipitate along the planet's magnetic field lines. A northern and a southern main auroral oval are visible, surrounded by small emission features associated with the Galilean moons. We present infrared observations, obtained with the Juno spacecraft, showing that in the case of Io, this emission exhibits a swirling pattern that is similar in appearance to a von Kármán vortex street. Well downstream of the main auroral spots, the extended tail is split in two. Both of Ganymede's footprints also appear as a pair of emission features, which may provide a remote measure of Ganymede's magnetosphere. These features suggest that the magnetohydrodynamic interaction between Jupiter and its moon is more complex than previously anticipated.
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Affiliation(s)
- A Mura
- Institute for Space Astrophysics and Planetology, National Institute for Astrophysics, Rome, Italy.
| | - A Adriani
- Institute for Space Astrophysics and Planetology, National Institute for Astrophysics, Rome, Italy
| | - J E P Connerney
- Space Research Corporation, Annapolis, MD, USA.,NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - S Bolton
- Southwest Research Institute, San Antonio, TX, USA
| | - F Altieri
- Institute for Space Astrophysics and Planetology, National Institute for Astrophysics, Rome, Italy
| | - F Bagenal
- Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, Boulder, CO, USA
| | - B Bonfond
- Space Science, Technologies and Astrophysical Research Institute, Laboratory for Planetary and Atmospheric Physics, University of Liège, Liège, Belgium
| | - B M Dinelli
- Institute of Atmospheric Sciences and Climate, National Research Council, Italy
| | - J-C Gérard
- Space Science, Technologies and Astrophysical Research Institute, Laboratory for Planetary and Atmospheric Physics, University of Liège, Liège, Belgium
| | - T Greathouse
- Southwest Research Institute, San Antonio, TX, USA
| | - D Grodent
- Space Science, Technologies and Astrophysical Research Institute, Laboratory for Planetary and Atmospheric Physics, University of Liège, Liège, Belgium
| | - S Levin
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - B Mauk
- Applied Physics Laboratory, Johns Hopkins University, Laurel, MD, USA
| | - M L Moriconi
- Institute of Atmospheric Sciences and Climate, National Research Council, Italy
| | - J Saur
- Institut für Geophysik und Meteorologie, University of Cologne, Köln, Germany
| | - J H Waite
- Southwest Research Institute, San Antonio, TX, USA.,Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, TX, USA
| | - M Amoroso
- Agenzia Spaziale Italiana, Rome, Italy
| | - A Cicchetti
- Institute for Space Astrophysics and Planetology, National Institute for Astrophysics, Rome, Italy
| | - F Fabiano
- Institute of Atmospheric Sciences and Climate, National Research Council, Italy
| | - G Filacchione
- Institute for Space Astrophysics and Planetology, National Institute for Astrophysics, Rome, Italy
| | - D Grassi
- Institute for Space Astrophysics and Planetology, National Institute for Astrophysics, Rome, Italy
| | - A Migliorini
- Institute for Space Astrophysics and Planetology, National Institute for Astrophysics, Rome, Italy
| | - R Noschese
- Institute for Space Astrophysics and Planetology, National Institute for Astrophysics, Rome, Italy
| | | | - G Piccioni
- Institute for Space Astrophysics and Planetology, National Institute for Astrophysics, Rome, Italy
| | - C Plainaki
- Institute for Space Astrophysics and Planetology, National Institute for Astrophysics, Rome, Italy.,Agenzia Spaziale Italiana, Rome, Italy
| | - G Sindoni
- Agenzia Spaziale Italiana, Rome, Italy
| | - R Sordini
- Institute for Space Astrophysics and Planetology, National Institute for Astrophysics, Rome, Italy
| | - F Tosi
- Institute for Space Astrophysics and Planetology, National Institute for Astrophysics, Rome, Italy
| | - D Turrini
- Institute for Space Astrophysics and Planetology, National Institute for Astrophysics, Rome, Italy
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3
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Connerney JEP, Adriani A, Allegrini F, Bagenal F, Bolton SJ, Bonfond B, Cowley SWH, Gerard JC, Gladstone GR, Grodent D, Hospodarsky G, Jorgensen JL, Kurth WS, Levin SM, Mauk B, McComas DJ, Mura A, Paranicas C, Smith EJ, Thorne RM, Valek P, Waite J. Jupiter's magnetosphere and aurorae observed by the Juno spacecraft during its first polar orbits. Science 2018; 356:826-832. [PMID: 28546207 DOI: 10.1126/science.aam5928] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 04/20/2017] [Indexed: 11/02/2022]
Abstract
The Juno spacecraft acquired direct observations of the jovian magnetosphere and auroral emissions from a vantage point above the poles. Juno's capture orbit spanned the jovian magnetosphere from bow shock to the planet, providing magnetic field, charged particle, and wave phenomena context for Juno's passage over the poles and traverse of Jupiter's hazardous inner radiation belts. Juno's energetic particle and plasma detectors measured electrons precipitating in the polar regions, exciting intense aurorae, observed simultaneously by the ultraviolet and infrared imaging spectrographs. Juno transited beneath the most intense parts of the radiation belts, passed about 4000 kilometers above the cloud tops at closest approach, well inside the jovian rings, and recorded the electrical signatures of high-velocity impacts with small particles as it traversed the equator.
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Affiliation(s)
- J E P Connerney
- Space Research Corporation, Annapolis, MD 21403, USA. .,NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
| | - A Adriani
- Institute for Space Astrophysics and Planetology, National Institute for Astrophysics, Rome, 00133, Italy
| | - F Allegrini
- Southwest Research Institute, San Antonio, TX 78238, USA
| | - F Bagenal
- Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80303, USA
| | - S J Bolton
- Southwest Research Institute, San Antonio, TX 78238, USA
| | - B Bonfond
- Institut d'Astrophysique et de Geophysique, Universite de Liege, Liege, B-4000 Belgium
| | | | - J-C Gerard
- Institut d'Astrophysique et de Geophysique, Universite de Liege, Liege, B-4000 Belgium
| | - G R Gladstone
- Southwest Research Institute, San Antonio, TX 78238, USA
| | - D Grodent
- Institut d'Astrophysique et de Geophysique, Universite de Liege, Liege, B-4000 Belgium
| | | | - J L Jorgensen
- National Space Institute, Technical University of Denmark, Kongens Lyngby, 2800, Denmark
| | - W S Kurth
- University of Iowa, Iowa City, IA 52242, USA
| | - S M Levin
- Jet Propulsion Laboratory/California Institute of Technology, Pasadena, CA 91109, USA
| | - B Mauk
- Johns Hopkins University, Applied Physics Laboratory, Laurel, MD 20723, USA
| | - D J McComas
- Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA
| | - A Mura
- Institute for Space Astrophysics and Planetology, National Institute for Astrophysics, Rome, 00133, Italy
| | - C Paranicas
- Johns Hopkins University, Applied Physics Laboratory, Laurel, MD 20723, USA
| | - E J Smith
- Jet Propulsion Laboratory/California Institute of Technology, Pasadena, CA 91109, USA
| | - R M Thorne
- Department of Atmospheric and Oceanic Sciences, University of California-Los Angeles, Los Angeles, CA 90095, USA
| | - P Valek
- Southwest Research Institute, San Antonio, TX 78238, USA
| | - J Waite
- Southwest Research Institute, San Antonio, TX 78238, USA
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4
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Mauk B, Bagenal F. Comparative Auroral Physics: Earth and Other Planets. GEOPHYSICAL MONOGRAPH SERIES 2013. [DOI: 10.1029/2011gm001192] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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5
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Hess SLG, Bonfond B, Zarka P, Grodent D. Model of the Jovian magnetic field topology constrained by the Io auroral emissions. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010ja016262] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- S. L. G. Hess
- LASP; University of Colorado at Boulder; Boulder Colorado USA
| | - B. Bonfond
- LPAP; Université de Liège; Liège Belgium
| | - P. Zarka
- LESIA; Observatoire de Paris-CNRS; Meudon France
| | - D. Grodent
- LPAP; Université de Liège; Liège Belgium
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6
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Pryor WR, Rymer AM, Mitchell DG, Hill TW, Young DT, Saur J, Jones GH, Jacobsen S, Cowley SWH, Mauk BH, Coates AJ, Gustin J, Grodent D, Gérard JC, Lamy L, Nichols JD, Krimigis SM, Esposito LW, Dougherty MK, Jouchoux AJ, Stewart AIF, McClintock WE, Holsclaw GM, Ajello JM, Colwell JE, Hendrix AR, Crary FJ, Clarke JT, Zhou X. The auroral footprint of Enceladus on Saturn. Nature 2011; 472:331-3. [DOI: 10.1038/nature09928] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2010] [Accepted: 02/10/2011] [Indexed: 11/09/2022]
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Affiliation(s)
- B. Bonfond
- Laboratoire de Physique Atmosphérique et Planétaire; Université de Liège; Liège Belgium
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8
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Hess SLG, Delamere P, Dols V, Bonfond B, Swift D. Power transmission and particle acceleration along the Io flux tube. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009ja014928] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- S. L. G. Hess
- Laboratory for Atmospheric and Space Physics; University of Colorado at Boulder; Boulder Colorado USA
| | - P. Delamere
- Laboratory for Atmospheric and Space Physics; University of Colorado at Boulder; Boulder Colorado USA
| | - V. Dols
- Laboratory for Atmospheric and Space Physics; University of Colorado at Boulder; Boulder Colorado USA
| | - B. Bonfond
- LPAP, Institut d'Astrophysique et Géophysique; Université de Liège; Liège Belgium
| | - D. Swift
- Geophysical Institute; University of Alaska Fairbanks; Fairbanks Alaska USA
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9
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Bonfond B, Grodent D, Gérard JC, Radioti A, Dols V, Delamere PA, Clarke JT. The Io UV footprint: Location, inter-spot distances and tail vertical extent. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2009ja014312] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- B. Bonfond
- Laboratoire de Physique Atmosphérique et Planétaire; Université de Liège; Liege Belgium
| | - D. Grodent
- Laboratoire de Physique Atmosphérique et Planétaire; Université de Liège; Liege Belgium
| | - J.-C. Gérard
- Laboratoire de Physique Atmosphérique et Planétaire; Université de Liège; Liege Belgium
| | - A. Radioti
- Laboratoire de Physique Atmosphérique et Planétaire; Université de Liège; Liege Belgium
| | - V. Dols
- Laboratory for Atmospheric and Space Physics; University of Colorado; Boulder Colorado USA
| | - P. A. Delamere
- Laboratory for Atmospheric and Space Physics; University of Colorado; Boulder Colorado USA
| | - J. T. Clarke
- Department of Astronomy and Center for Space Physics, Boston University; Boston Massachusetts USA
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10
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Grodent D, Bonfond B, Radioti A, Gérard JC, Jia X, Nichols JD, Clarke JT. Auroral footprint of Ganymede. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2009ja014289] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Denis Grodent
- Institut d'Astrophysique et de Géophysique, Laboratory for Planetary and Atmospheric Physics; Université de Liège; Liège Belgium
| | - Bertrand Bonfond
- Institut d'Astrophysique et de Géophysique, Laboratory for Planetary and Atmospheric Physics; Université de Liège; Liège Belgium
| | - Aikaterini Radioti
- Institut d'Astrophysique et de Géophysique, Laboratory for Planetary and Atmospheric Physics; Université de Liège; Liège Belgium
| | - Jean-Claude Gérard
- Institut d'Astrophysique et de Géophysique, Laboratory for Planetary and Atmospheric Physics; Université de Liège; Liège Belgium
| | - Xianzhe Jia
- Institute of Geophysics and Planetary Physics; University of California; Los Angeles California USA
| | | | - John T. Clarke
- Center for Space Physics; Boston University; Boston Massachusetts USA
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11
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Ergun RE, Ray L, Delamere PA, Bagenal F, Dols V, Su YJ. Generation of parallel electric fields in the Jupiter-Io torus wake region. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2008ja013968] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- R. E. Ergun
- Laboratory for Atmospheric and Space Physics; University of Colorado; Boulder Colorado USA
| | - L. Ray
- Laboratory for Atmospheric and Space Physics; University of Colorado; Boulder Colorado USA
| | - P. A. Delamere
- Laboratory for Atmospheric and Space Physics; University of Colorado; Boulder Colorado USA
| | - F. Bagenal
- Laboratory for Atmospheric and Space Physics; University of Colorado; Boulder Colorado USA
| | - V. Dols
- Laboratory for Atmospheric and Space Physics; University of Colorado; Boulder Colorado USA
| | - Y.-J. Su
- Department of Physics; University of Texas at Arlington; Arlington Texas USA
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12
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Ray LC, Su YJ, Ergun RE, Delamere PA, Bagenal F. Current-voltage relation of a centrifugally confined plasma. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2008ja013969] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- L. C. Ray
- Laboratory for Atmospheric and Space Physics; University of Colorado; Boulder Colorado USA
| | - Y.-J. Su
- Department of Physics; University of Texas at Arlington; Arlington Texas USA
| | - R. E. Ergun
- Laboratory for Atmospheric and Space Physics; University of Colorado; Boulder Colorado USA
| | - P. A. Delamere
- Laboratory for Atmospheric and Space Physics; University of Colorado; Boulder Colorado USA
| | - F. Bagenal
- Laboratory for Atmospheric and Space Physics; University of Colorado; Boulder Colorado USA
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13
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Grodent D, Bonfond B, Gérard JC, Radioti A, Gustin J, Clarke JT, Nichols J, Connerney JEP. Auroral evidence of a localized magnetic anomaly in Jupiter's northern hemisphere. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2008ja013185] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Denis Grodent
- Laboratory for Planetary and Atmospheric Physics; Université de Liège; Liège Belgium
| | - Bertrand Bonfond
- Laboratory for Planetary and Atmospheric Physics; Université de Liège; Liège Belgium
| | - Jean-Claude Gérard
- Laboratory for Planetary and Atmospheric Physics; Université de Liège; Liège Belgium
| | - Aikaterini Radioti
- Laboratory for Planetary and Atmospheric Physics; Université de Liège; Liège Belgium
| | - Jacques Gustin
- Laboratory for Planetary and Atmospheric Physics; Université de Liège; Liège Belgium
| | - John T. Clarke
- Center for Space Physics; Boston University; Boston Massachusetts USA
| | - Jonathan Nichols
- Center for Space Physics; Boston University; Boston Massachusetts USA
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14
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Wannawichian S, Clarke JT, Pontius DH. Interaction evidence between Enceladus' atmosphere and Saturn's magnetosphere. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2007ja012899] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- S. Wannawichian
- Center for Space Physics; Boston University; Boston Massachusetts USA
| | - J. T. Clarke
- Center for Space Physics; Boston University; Boston Massachusetts USA
| | - D. H. Pontius
- Physics Department; Birmingham-Southern College; Birmingham Alabama USA
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15
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Radioti A, Gérard JC, Grodent D, Bonfond B, Krupp N, Woch J. Discontinuity in Jupiter's main auroral oval. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2007ja012610] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- A. Radioti
- LPAP, Institut d'Astrophysique et de Géophysique; Université de Liège; Belgium
| | - J.-C. Gérard
- LPAP, Institut d'Astrophysique et de Géophysique; Université de Liège; Belgium
| | - D. Grodent
- LPAP, Institut d'Astrophysique et de Géophysique; Université de Liège; Belgium
| | - B. Bonfond
- LPAP, Institut d'Astrophysique et de Géophysique; Université de Liège; Belgium
| | - N. Krupp
- Max-Planck-Institut für Sonnensystemforschung; Katlenburg-Lindau Germany
| | - J. Woch
- Max-Planck-Institut für Sonnensystemforschung; Katlenburg-Lindau Germany
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16
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Grodent D, Gérard JC, Radioti A, Bonfond B, Saglam A. Jupiter’s changing auroral location. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2007ja012601] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Denis Grodent
- Laboratory for Planetary and Atmospheric Physics; Université de Liège; Belgium
| | - Jean-Claude Gérard
- Laboratory for Planetary and Atmospheric Physics; Université de Liège; Belgium
| | - Aikaterini Radioti
- Laboratory for Planetary and Atmospheric Physics; Université de Liège; Belgium
| | - Bertrand Bonfond
- Laboratory for Planetary and Atmospheric Physics; Université de Liège; Belgium
| | - Adem Saglam
- Laboratory for Planetary and Atmospheric Physics; Université de Liège; Belgium
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17
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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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18
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Saur J, Mauk BH, Mitchell DG, Krupp N, Khurana KK, Livi S, Krimigis SM, Newell PT, Williams DJ, Brandt PC, Lagg A, Roussos E, Dougherty MK. Anti-planetward auroral electron beams at Saturn. Nature 2006; 439:699-702. [PMID: 16467832 DOI: 10.1038/nature04401] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2005] [Accepted: 11/02/2005] [Indexed: 11/10/2022]
Abstract
Strong discrete aurorae on Earth are excited by electrons, which are accelerated along magnetic field lines towards the planet. Surprisingly, electrons accelerated in the opposite direction have been recently observed. The mechanisms and significance of this anti-earthward acceleration are highly uncertain because only earthward acceleration was traditionally considered, and observations remain limited. It is also unclear whether upward acceleration of the electrons is a necessary part of the auroral process or simply a special feature of Earth's complex space environment. Here we report anti-planetward acceleration of electron beams in Saturn's magnetosphere along field lines that statistically map into regions of aurora. The energy spectrum of these beams is qualitatively similar to the ones observed at Earth, and the energy fluxes in the observed beams are comparable with the energies required to excite Saturn's aurora. These beams, along with the observations at Earth and the barely understood electron beams in Jupiter's magnetosphere, demonstrate that anti-planetward acceleration is a universal feature of aurorae. The energy contained in the beams shows that upward acceleration is an essential part of the overall auroral process.
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Affiliation(s)
- J Saur
- Applied Physics Laboratory, Johns Hopkins University, 11100 Johns Hopkins Road, Laurel, Maryland 20723, USA.
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19
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Gérard JC, Saglam A, Grodent D, Clarke JT. Morphology of the ultraviolet Io footprint emission and its control by Io's location. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2005ja011327] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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20
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Kunde VG, Flasar FM, Jennings DE, Bézard B, Strobel DF, Conrath BJ, Nixon CA, Bjoraker GL, Romani PN, Achterberg RK, Simon-Miller AA, Irwin P, Brasunas JC, Pearl JC, Smith MD, Orton GS, Gierasch PJ, Spilker LJ, Carlson RC, Mamoutkine AA, Calcutt SB, Read PL, Taylor FW, Fouchet T, Parrish P, Barucci A, Courtin R, Coustenis A, Gautier D, Lellouch E, Marten A, Prangé R, Biraud Y, Ferrari C, Owen TC, Abbas MM, Samuelson RE, Raulin F, Ade P, Césarsky CJ, Grossman KU, Coradini A. Jupiter's Atmospheric Composition from the Cassini Thermal Infrared Spectroscopy Experiment. Science 2004; 305:1582-6. [PMID: 15319491 DOI: 10.1126/science.1100240] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The Composite Infrared Spectrometer observed Jupiter in the thermal infrared during the swing-by of the Cassini spacecraft. Results include the detection of two new stratospheric species, the methyl radical and diacetylene, gaseous species present in the north and south auroral infrared hot spots; determination of the variations with latitude of acetylene and ethane, the latter a tracer of atmospheric motion; observations of unexpected spatial distributions of carbon dioxide and hydrogen cyanide, both considered to be products of comet Shoemaker-Levy 9 impacts; characterization of the morphology of the auroral infrared hot spot acetylene emission; and a new evaluation of the energetics of the northern auroral infrared hot spot.
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Affiliation(s)
- V G Kunde
- Department of Astronomy, University of Maryland, College Park, MD 20742, USA.
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21
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Mauk BH. Energetic ion characteristics and neutral gas interactions in Jupiter's magnetosphere. ACTA ACUST UNITED AC 2004. [DOI: 10.1029/2003ja010270] [Citation(s) in RCA: 172] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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22
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Tomás AT. Energetic electrons in the inner part of the Jovian magnetosphere and their relation to auroral emissions. ACTA ACUST UNITED AC 2004. [DOI: 10.1029/2004ja010405] [Citation(s) in RCA: 36] [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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23
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Hanlon PG. On the evolution of the solar wind between 1 and 5 AU at the time of the Cassini Jupiter flyby: Multispacecraft observations of interplanetary coronal mass ejections including the formation of a merged interaction region. ACTA ACUST UNITED AC 2004. [DOI: 10.1029/2003ja010112] [Citation(s) in RCA: 19] [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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24
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Grodent D. A possible auroral signature of a magnetotail reconnection process on Jupiter. ACTA ACUST UNITED AC 2004. [DOI: 10.1029/2003ja010341] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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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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Affiliation(s)
- Larry Esposito
- Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80309, USA.
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Su YJ, Ergun RE, Bagenal F, Delamere PA. Io-related Jovian auroral arcs: Modeling parallel electric fields. ACTA ACUST UNITED AC 2003. [DOI: 10.1029/2002ja009247] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yi-Jiun Su
- Laboratory for Atmospheric and Space Physics; University of Colorado; Boulder Colorado USA
| | - Robert E. Ergun
- Laboratory for Atmospheric and Space Physics; University of Colorado; Boulder Colorado USA
| | - Fran Bagenal
- Laboratory for Atmospheric and Space Physics; University of Colorado; Boulder Colorado USA
| | - Peter A. Delamere
- Laboratory for Atmospheric and Space Physics; University of Colorado; Boulder Colorado USA
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Delamere PA. Momentum transfer between the Io plasma wake and Jupiter's ionosphere. ACTA ACUST UNITED AC 2003. [DOI: 10.1029/2002ja009530] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Affiliation(s)
- T. W. Hill
- Department of Physics and Astronomy; Rice University; Houston Texas USA
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Control of Jupiter's radio emission and aurorae by the solar wind. Nature 2002. [DOI: 10.1038/news020225-6] [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]
|
34
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Gérard JC. Excitation of the FUV Io tail on Jupiter: Characterization of the electron precipitation. ACTA ACUST UNITED AC 2002. [DOI: 10.1029/2002ja009410] [Citation(s) in RCA: 57] [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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Comparison of auroral processes: Earth and Jupiter. ACTA ACUST UNITED AC 2002. [DOI: 10.1029/130gm08] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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