Longitudinal variations in Saturn's magnetosphere caused by hot electrons.

Details Longitudinal variations in Saturn's magnetosphere caused by hot electrons. Longitudinal variations in Saturn's magnetosphere caused by hot electrons.

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsm32a..01b&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SM32A-01

Physics

2756 Planetary Magnetospheres (5443, 5737, 6033)

Scientific paper

A non-thermal tail to the electron distribution function has been measured in the inner magnetospheres of both Jupiter and Saturn. These hot electrons are only a small fraction of the total electron density, yet their influence on the gas tori at Jupiter and Saturn is significant. We explore the role of hot electrons at Saturn using a water group-based homogeneous physical chemistry model. Our results suggest the energy input to Saturn's inner magnetosphere is negligible, but that the hot electrons are a significant source of ionization. We propose that the observed azimuthal electron density modulation at Saturn between 3 and 5 Rs is caused by an azimuthally varying hot electron abundance. In addition, we will explore longitudinal variations in composition and compare with a recent analysis of the Cassini Plasma Spectrometer (CAPS) data.

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