Interaction of titan with the ambient magnetospheric plasma: influenceof magnetospheric electrons

Details Interaction of titan with the ambient magnetospheric plasma: influenceof magnetospheric electrons Interaction of titan with the ambient magnetospheric plasma: influenceof magnetospheric electrons

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja.....9166b&link_type=abstract

EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #9166

Physics

Scientific paper

On its orbit around Saturn, Titan interacts with the ambient relatively moving magnetized magnetospheric plasma generating some interesting features like a magnetic wake or a magnetic ionopause in Titan's upstream hemisphere. The properties of these features depend on the properties of the participants of the interaction which are in the first place: the magnetospheric plasma and Titan's atmosphere. Apart from that the solar EUV radiation inserts energy into the system driving chemical processes and ionizing the neutral atmosphere. With our 3D MHD model we simulate the interaction for different Saturnian local times at Titan (changing the upstream side from dayside to nightside) and show e.g. the formation of an ionopause and its local time dependence for the first time. Recently we have included the influence of magnetospheric electrons into our model. We discuss in detail the processes of heating and ionization by magnetospheric electrons - which strongly depend on the magnetic field line geometry resulting from our MHD simulation - and show their 3D disptribution around the satellite.

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