The dusty plasma of Enceladus in Saturn's magnetosphere: a multi-fluid MHD study

Details The dusty plasma of Enceladus in Saturn's magnetosphere: a multi-fluid MHD study The dusty plasma of Enceladus in Saturn's magnetosphere: a multi-fluid MHD study

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufm.p11d1607j&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #P11D-1607

Physics

Plasma Physics

[2753] Magnetospheric Physics / Numerical Modeling, [6280] Planetary Sciences: Solar System Objects / Saturnian Satellites, [7807] Space Plasma Physics / Charged Particle Motion And Acceleration, [7849] Space Plasma Physics / Plasma Interactions With Dust And Aerosols

Scientific paper

We have recently simulated the effect of charged dust in a flowing magnetized plasma with our multi-fluid MHD model. In addition to slowing down the plasma flow, the motion of negatively charged dust particles against the convection electric field pushes the plasma to move along this electric field to conserve momentum. Although the center of momentum is not affected in the separation between dust and ion fluids, the center of average charge moves parallel to the ion motion, in the direction of the convection electric field. Positively charged dust creates similar plasma deceleration but motion anti-parallel to the convection electric field. We apply this improved model to the understanding of the Enceladus interaction by adding the gas plume and the moon itself. We examine the interaction of the corotating Saturnian plasma with the dusty plume of Enceladus. These results are constrained by recent Cassini plume flybys. With appropriate geometry, the code is potentially applicable to solar wind dust pickup, ICME interactions with dust trails, cometary plasma pickup, and active plasma releases such as the AMPTE barium release.

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