Ring Ion Dynamics at Saturn and Their Potential Consequences

Details Ring Ion Dynamics at Saturn and Their Potential Consequences Ring Ion Dynamics at Saturn and Their Potential Consequences

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agusm.p21b..02l&link_type=abstract

American Geophysical Union, Spring Meeting 2005, abstract #P21B-02

Computer Science

Numerical Analysis

5759 Rings And Dust, 6265 Planetary Rings, 6275 Saturn

Scientific paper

The Cassini Orbiter CAPS and INMS detections of an ionosphere of Saturn's rings during SOI, coupled with the internal dipole field offset detected on previous missions, motivated the present numerical analysis of mass 32 and 16 singly charged ions in Saturn's inner magnetosphere. The combination of the source of heavy pickup ions in the plane of the rotational equator, at radial distances of ~1.4-2.4 Saturn radii, and the dipole offset combine to produce a heavy ion torus with suggested consequences yet to be observationally confirmed. Although the neutral atmosphere is expected to be roughly symmetric about the ring plane (Johnson et al. 2005), the modeled ion spatial distribution exhibits major North-South asymmetries due to asymmetric photo-ionization and the dipole offset, and also due to the fact that the ring ion source spans the radial distance where the Keplerian velocity is equal to the ion corotation velocity, Rc. We find that for R

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