Physics
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufm.p51a1398k&link_type=abstract
American Geophysical Union, Fall Meeting 2004, abstract #P51A-1398
Physics
5737 Magnetospheres (2756), 6275 Saturn, 2756 Planetary Magnetospheres (5443, 5737, 6030)
Scientific paper
We present a new model of Saturn's magnetospheric field which is based on observations derived from Pioneer, Voyager and Cassini spacecraft. The model uses techniques and methods used by modelers for the earth's magnetosphere. Our model consists of modules which specify (1) the internal spherical harmonic model, (2) the ring current and the magnetotail current system, (3) the field from the radial current system which reinforces corotation on the outflowing plasma. (4) the shielding fields from an axially symmetric magnetopause (5) and the interconnection magnetic field between solar wind IMF and the magnetosphere. The structural model of the current sheet is specified in the Kronian Solar Magnetospheric (KSM) coordinate system and incorporates the hinging of the current sheet observed at large distances. The model correctly specifies the effect of the 26.7 degrees tilt between the Kronian orbital and equatorial planes. We use Tsyganenko and Peredo [1994] models of disk-shaped current sheets to model the magnetic field of Saturn's current sheet. The tilt, and hinging of the current sheet is introduced by using the general deformation technique [Tsyganenko, 1998]. The shielding field from the magnetopause for the equatorial current sheet and the internal field is specified by Cartesian and cylindrical harmonics, respectively.
Arridge Christopher S.
Dougherty K. M. K. M.
Khurana Krishan K.
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