Modeling the Enceladus Plasma and Neutral Torus in Saturn's Inner Magnetosphere

Details Modeling the Enceladus Plasma and Neutral Torus in Saturn's Inner Magnetosphere Modeling the Enceladus Plasma and Neutral Torus in Saturn's Inner Magnetosphere

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dps....42.1605j&link_type=abstract

American Astronomical Society, DPS meeting #42, #16.05; Bulletin of the American Astronomical Society, Vol. 42, p.977

Astronomy and Astrophysics

Astronomy

Scientific paper

Saturn's moon Enceladus, produces hundreds of kilograms of water vapor every second. These water molecules form a neutral torus which is comparable to the Io torus in the Jovian system. These molecules become ionized producing a plasma disk in the inner magnetosphere of Saturn which exchanges momentum with the "corotating” magnetospheric plasma. To balance the centripetal force of this plasma disk, Saturn's magnetic field is stretched in the radial direction and to accelerate the azimuthal speed to corotational values, the field is stretched in the azimuthal direction. At Enceladus the massive pickup of new ions from its plume slows down the corotating flow and breaks this force balance, causing plasma flows in the radial direction. Such radial flows in the inner magnetosphere of Saturn are supported by Cassini observations using various particle and field instruments. In this study we develop a global model of the inner magnetosphere of Saturn in an attempt to reproduce such processes.

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