An update on the ring exosphere and plasma disc of Saturn

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A re-examination of the mass budget of the ring exosphere of Saturn - as prompted by the most recent Cassini measurements in the vicinity of the ring system - indicates that the corresponding number density could reach the level of 2-3 × 105 cm-3 at maximum. Such extended exospheric structure in equilibrium with a thin ring plasma disc could be an important supplier of suprathermal oxygen ions of a few tens of keV in the Saturnian magnetosphere.

Original languageEnglish
Pages (from-to)1-3
Number of pages3
JournalGeophysical Research Letters
Issue number13
StatePublished - 16 Jul 2005


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