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  • 1
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    Energetic neutral atom emissions from Titan interaction with Saturn's magnetosphere (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-05-14
    Description: The Cassini Magnetospheric Imaging Instrument (MIMI) observed the interaction of Saturn's largest moon, Titan, with Saturn's magnetosphere during two close flybys of Titan on 26 October and 13 December 2004. The MIMI Ion and Neutral Camera (INCA) continuously imaged the energetic neutral atoms (ENAs) generated by charge exchange reactions between the energetic, singly ionized trapped magnetospheric ions and the outer atmosphere, or exosphere, of Titan. The images reveal a halo of variable ENA emission about Titan's nearly collisionless outer atmosphere that fades at larger distances as the exospheric density decays exponentially. The altitude of the emissions varies, and they are not symmetrical about the moon, reflecting the complexity of the interactions between Titan's upper atmosphere and Saturn's space environment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mitchell, D G -- Brandt, P C -- Roelof, E C -- Dandouras, J -- Krimigis, S M -- Mauk, B H -- New York, N.Y. -- Science. 2005 May 13;308(5724):989-92.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Applied Physics Laboratory, Johns Hopkins University, Laurel, MD 21042, USA. don.mitchell@jhuapl.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15890874" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; Extraterrestrial Environment ; Ions ; Magnetics ; *Saturn ; Spacecraft
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Enceladus' varying imprint on the magnetosphere of Saturn (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-03-11
    Description: The bombardment of Saturn's moon Enceladus by 〉20-kiloelectron volt magnetospheric particles causes particle flux depletions in regions magnetically connected to its orbit. Irrespective of magnetospheric activity, proton depletions are persistent, whereas electron depletions are quickly erased by magnetospheric processes. Observations of these signatures by Cassini's Magnetospheric Imaging Instrument allow remote monitoring of Enceladus' gas and dust environments. This reveals substantial outgassing variability at the moon and suggests increased dust concentrations at its Lagrange points. The characteristics of the particle depletions additionally provide key radial diffusion coefficients for energetic electrons and an independent measure of the inner magnetosphere's rotation velocity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jones, G H -- Roussos, E -- Krupp, N -- Paranicas, C -- Woch, J -- Lagg, A -- Mitchell, D G -- Krimigis, S M -- Dougherty, M K -- New York, N.Y. -- Science. 2006 Mar 10;311(5766):1412-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max Planck Institut fur Sonnensystemforschung, Max-Planck-Str. 2, 37191 Katlenburg-Lindau, Germany. jones@mps.mpg.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16527968" target="_blank"〉PubMed〈/a〉
    Keywords: *Atmosphere ; Electrons ; *Extraterrestrial Environment ; Magnetics ; *Saturn
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Electron beams and ion composition measured at Io and in its torus (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-10-18
    Description: Intense, magnetic field-aligned, bidirectional, energetic (〉15 kiloelectron volts) electron beams were discovered by the Galileo energetic particles detector during the flyby of Io. These beams can carry sufficient energy flux into Jupiter's atmosphere to produce a visible aurora at the footprint of the magnetic flux tube connecting Io to Jupiter. Composition measurements through the torus showed that the spatial distributions of protons, oxygen, and sulfur are different, with sulfur being the dominant energetic (〉 approximately 10 kiloelectron volts per nucleon) ion at closest approach.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Williams, D J -- Mauk, B H -- McEntire, R E -- Roelof, E C -- Armstrong, T P -- Wilken, B -- Roederer, J G -- Krimigis, S M -- Fritz, T A -- Lanzerotti, L J -- New York, N.Y. -- Science. 1996 Oct 18;274(5286):401-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Johns Hopkins Applied Physics Laboratory, Johns Hopkins Road, Laurel, MD 20723, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8832885" target="_blank"〉PubMed〈/a〉
    Keywords: Electrons ; Extraterrestrial Environment ; *Ions ; *Jupiter ; Magnetics ; Oxygen/analysis ; Protons ; Sulfur/analysis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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