Magnetospheric screening of cosmic dust

Details Magnetospheric screening of cosmic dust Magnetospheric screening of cosmic dust

Jun 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999jgr...10412577j&link_type=abstract

Journal of Geophysical Research, Volume 104, Issue A6, p. 12577-12584

Physics

1

Interplanetary Physics: Interplanetary Dust, Magnetospheric Physics: Magnetosphere Interactions With Satellites And Rings, Planetology: Solid Surface Planets: Rings And Dust, Planetology: Solid Surface Planets: Interactions With Particles And Fields

Scientific paper

We investigate the effect of the terrestrial magnetosphere on the dynamics of cosmic dust. We show that the magnetosphere acts as a shield with an efficiency that depends on the size and the velocity of the incoming dust particles. We report on numerical simulations for dust grains of interplanetary, cometary, and lunar origin. We show that magnetospheric effects reduce the flux of interplanetary and lunar dust particles with radii a<=0.1μm, but the shielding is much less effective for cometary dust grains owing to their high average approach velocity.

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