MHD Study of the Variation of the Mass Loading Sources near Enceladus

Details MHD Study of the Variation of the Mass Loading Sources near Enceladus MHD Study of the Variation of the Mass Loading Sources near Enceladus

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufm.p23b1381j&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #P23B-1381

Other

2732 Magnetosphere Interactions With Satellites And Rings, 2753 Numerical Modeling, 6005 Atmospheres (1060), 6275 Saturn, 7849 Plasma Interactions With Dust And Aerosols (2461)

Scientific paper

The major mass loading source in Saturn's magnetosphere, Enceladus, is studied with seven Cassini flybys during 2005 and 2008. The observations have revealed that the primary mass loading source originates from an extensive and asymmetric water plume centered at the South polar region of this icy moon. Such a persistent gas production results in a plasma torus centered at the Enceladus orbit and possibly extended by other moons of comparatively smaller gas production. To understand the interaction between Enceladus and the corotational torus plasma, the Cassini magnetometer data is investigated with the help of 3-D MHD simulations to infer the size, structures and time variations of the plume. A numeric model is applied to this plasma interaction region, considering self-consistently the photoionization, electron impact ionization and charge exchange as the mass loading source. In addition, the torus-moon surface interaction is studied with different types of inner boundary conditions. We investigate the possibility of charged dust affecting the flowing magnetized plasma at Enceladus.

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