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| Titel |
Influence of hot plasma on magnetodisc structure at Saturn |
| VerfasserIn |
Nicholas Achilleos, Patrick Guio, Christopher Arridge |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250040609
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| Zusammenfassung |
| We present results of a modelling study undertaken with the UCL Magnetodisc Model in
Saturn configuration [Achilleos, Guio and Arridge, Mon. Not. Roy. Ast. Soc., 401, 2349
(2010)]. The level of hot plasma pressure within the magnetosphere has a strong influence on
the magnetic field configuration, under the assumption of force balance in the rapidly rotating
plasma. We use a ‘hot plasma index’ to represent this pressure, and higher values of this
parameter lead to a thinner equatorial current sheet and a more radial field. In addition, the
magnetic moment of the disc current relative to the planetary dipole moment increases with
hot plasma index, with the model unable to provide static solutions beyond limiting values
of this index and the disc moment. We discuss the implications for the range of
hot plasma pressures observed within the Kronian environment during the Cassini
era. |
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