A global magnetic model of Saturn’s magnetosphere and a comparison with Cassini SOI dataстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:A re-scaling of a recent model of Jupiter’s
magnetosphere incorporating ring current, magnetopause,
and tail current systems is used as a starting-point for
modeling Saturn’s magnetospheric field. The model is
compared with observations obtained by Cassini during
its Saturn orbit insertion fly-through of Saturn’s
magnetosphere, and is shown to give a good description.
Comparison of ring current parameters obtained on the
inbound and early outbound passes, when the
magnetosphere was expanded due to low solar wind
pressure, with those obtained by Voyager-1 under more
usual conditions, and by Pioneer-11 when the
magnetosphere was compressed, suggests that the ring
current magnetic moment increases with system size. The
effect is proposed to be due to radial stress balance
conditions in a rapidly rotating magnetosphere, and has
consequences for the dependence of magnetosphere size on
solar wind pressure. Citation: Alexeev, I. I., V. V. Kalegaev,
E. S. Belenkaya, S. Y. Bobrovnikov, E. J. Bunce, S. W. H.
Cowley, and J. D. Nichols (2006), A global magnetic model of
Saturn’s magnetosphere and a comparison with Cassini SOI data,