Physics
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufm.p42a..07s&link_type=abstract
American Geophysical Union, Fall Meeting 2004, abstract #P42A-07
Physics
7843 Numerical Simulation Studies, 5737 Magnetospheres (2756), 5780 Tori And Exospheres, 6280 Saturnian Satellites
Scientific paper
Titan, the largest moon of Saturn and an important target for the Cassini mission, has a unique plasma interaction with the Kronian corotating plasma. Titan's dense and nitrogen rich atmosphere is the primary source of nitrogen torus around the Titan's orbit in the Kronian system through the subsonic and superAlfvénic interaction between Saturn's corotating plasma and the exosphere and ionosphere of Titan. We have developed a global numerical model to study the magnetic erosion process at Titan. [Kallio et al., Geoph. Res. Lett., 31, L15703, doi:10.1029/2004GL020344, 2004] Our simulation model is a quasi-neutral hybrid model, which can model both subsonic and supersonic plasma flow. In the presentation we will show analysis based on an improved version of the model that contains four ion species (H+, N+, CH4+, N2+) and also mimics the electron impact ionization. We will present runs in which we have studied the effect of the Saturn Local Time on the Titan - co-rotating plasma interaction. Finally, implications of the results for the anticipated scientific return from the Cassini plasma and field instruments will be discussed.
Harri A.
Janhunen Pekka
Kallio Esa
Mäkinen Teemu
Mursula Kalevi
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