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| Titel |
Titan's ionosphere in the magnetosheath: Cassini RPWS results during the T32 flyby |
| VerfasserIn |
P. Garnier, J.-E. Wahlund, L. Rosenqvist, R. Modolo, K. Agren, N. Sergis, P. Canu, M. André, D. A. Gurnett, W. S. Kurth, S. M. Krimigis, A. Coates, M. Dougherty, J. H. Waite |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 27, no. 11 ; Nr. 27, no. 11 (2009-11-16), S.4257-4272 |
| Datensatznummer |
250016708
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| Publikation (Nr.) |
 copernicus.org/angeo-27-4257-2009.pdf |
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| Zusammenfassung |
| The Cassini mission has provided much information about the Titan
environment, with numerous low altitude encounters with the moon being always
inside the magnetosphere. The only encounter taking place outside the
magnetopause, in the magnetosheath, occurred the 13 June 2007 (T32 flyby).
This paper is dedicated to the analysis of the Radio and Plasma Wave
investigation data during this specific encounter, in particular with the
Langmuir probe, providing a detailed picture of the cold plasma environment
and of Titan's ionosphere with these unique plasma conditions. The various
pressure terms were also calculated during the flyby. The comparison with the T30
flyby, whose geometry was very similar to the T32 encounter but where Titan
was immersed in the kronian magnetosphere, reveals that the evolution of the
incident plasma has a significant influence on the structure of the
ionosphere, with in particular a change of the exo-ionospheric shape. The
electrical conductivities are given along the trajectory of the spacecraft
and the discovery of a polar plasma cavity is reported. |
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