Mass loading at Titan and comets

Details Mass loading at Titan and comets Mass loading at Titan and comets

Apr 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esasp.338..255g&link_type=abstract

In ESA, Symposium on Titan p 255-261 (SEE N92-32348 23-91)

Physics

Plasma Physics

Comets, Magnetohydrodynamic Flow, Planetary Magnetospheres, Plasma Drift, Plasma Interactions, Saturn Atmosphere, Solar Wind, Titan, Ion Distribution, Plasma Physics

Scientific paper

Present understanding of the cometary mass loading process (the addition of newborn ions to high speed magnetized plasma flows) is explored and the cometary lesson is applied to the environment of Titan. Mass loading is the dominant physical process controlling the interaction of the solar wind with comets, and it might play an important role in the interaction of Titan's neutral torus and exosphere with Saturn's magnetosphere. Freshly born ions follow cycloidal trajectories, resulting from the superposition of gyration and E/B drift. In the plasma frame, the resulting velocity space distribution is a ring beam distribution at comets and a ring distribution at Titan. This difference in free energy is expected to generate significantly different levels of low frequency broad band electromagnetic turbulence and, thus, result in important differences in the implanted ion distributions. It is predicted that mass loading creates a hot, equatorially trapped plasma population at Titan.

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