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| Titel |
Variation of the Saturn Kilometric Radiation Polarization with the location of Cassini: statistical results and interpretation |
| VerfasserIn |
B. Cecconi, L. Lamy, G. Fischer, S.-Y. Ye, U. Taubenschuss, W. Macher, P. Zarka, A. Lecacheux, W. S. Kurth, D. A. Gurnett |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250027511
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| Zusammenfassung |
| The Saturn Kilometric Radiation (SKR) detected from high latitudes orbits (between 30- and
60-) showed elliptical polarization. The data set used here investigates all the 2007 and 2008
high latitude orbits which go as high as 80- in latitude. We show that the SKR is
elliptically polarized at moderately high latitudes (> 30-), as already reported.
Surprisingly, we also show that at very high latitude (>~ 70-), the SKR polarization is
clearly circular again. We present a statistical study of the dependence of SKR
polarization as a function of latitude, local time and distance of the observer. A possible
dependence of the SKR polarization on the observer’s local time is pointed out.
A case study is detailed, in which we follow the variation of SKR polarization
along an inclined orbit. Implications in terms of physical interpretation are debated. |
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