Outer Magnetospheric Structure: Jupiter and Saturn Compared

Details Outer Magnetospheric Structure: Jupiter and Saturn Compared Outer Magnetospheric Structure: Jupiter and Saturn Compared

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsm23a1930w&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SM23A-1930

Physics

[2731] Magnetospheric Physics / Magnetosphere: Outer, [2740] Magnetospheric Physics / Magnetospheric Configuration And Dynamics, [5737] Planetary Sciences: Fluid Planets / Magnetospheres

Scientific paper

The jovian dayside magnetosphere is traditionally divided into three different regions with the outermost region, colloquially referred to as the cushion region, existing between the outer edge of the magnetodisk and the magnetopause. Magnetometer and plasma data from 6 different spacecraft are used to determine the average properties of this region, including its characteristic thickness at the subsolar point, and these observations are compared with data from the saturnian magnetosphere obtained using the Pioneer, Voyager and Cassini spacecraft. Significant differences are found in the structure of the two rotationally driven magnetospheres with the saturnian system showing little evidence for the cushion region seen at Jupiter. These differences are discussed in terms of the parameter regimes pertinent to each planet and it is shown that, whilst the Jovian magnetodisk typically breaks down some 20RJ inside the magnetopause, the saturnian magnetodisk does not typically break down until much closer to the magnetopause.

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