Physics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsm41b1874s&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #SM41B-1874
Physics
[0328] Atmospheric Composition And Structure / Exosphere, [2753] Magnetospheric Physics / Numerical Modeling, [6281] Planetary Sciences: Solar System Objects / Titan
Scientific paper
We have developed a 3D multi-fluid model of the plasma interaction near Titan that includes three ion and two neutral species within Titan’s ionosphere. The neutral particles in the atmosphere of Titan are ionized through photoionization, impact from magnetospheric electrons, and charge exchanging interactions with ions in the ionosphere. Ions are lost through dissociative recombination, charge exchange, and ion outflow. Using this model we calculate the global heating of neutral fluids in Titan’s ionosphere due to collisions between neutral particles and low-energy ions near the exobase. Ions are accelerated near the exobase due to Titan’s interaction with Saturn’s magnetosphere and heat and exchange momentum with neutral fluids. The acceleration of low-energy ions near Titan’s exobase is affected by the morphology of Titan’s induced magnetosphere, which is determined by Titan’s local space environment; therefore we will investigate the coupling of ion and neutral fluids near Titan’s exobase for both lobe-like and sheet-like plasma environments at 0, 6, 12, and 18 hours Saturn local time.
Snowden D. S.
Winglee Robert
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