Physics
Scientific paper
Dec 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981m%26p....25..427h&link_type=abstract
Moon and the Planets, vol. 25, Dec. 1981, p. 427-436.
Physics
15
Charged Particles, Earth Magnetosphere, Galilean Satellites, Impact Damage, Interplanetary Dust, Jupiter Atmosphere, Satellite Perturbation, Brightness, Magnetically Trapped Particles, Particle Trajectories, Plasmasphere, Rotating Plasmas, Thermal Plasmas
Scientific paper
Interplanetary dust grains entering the Jovian plasmasphere become charged, and those in a certain size range get magneto-gravitationally trapped in the corotating plasmasphere. The trajectories of such dust grains intersect the orbits of one or more of the Galilean satellites. Orbital calculations of micron sized dust grains show that they impact the outermost satellite Callisto predominantly on its leading face, while they impact the inner three - Io, Europa and Ganymede - predominantly on the trailing face. These results are offered as an explanation of the observed brightness asymmetry between the leading and trailing faces of the outer three Galilean satellites. The albedo of Io is likely to be determined by its volcanism.
Hill Richard J.
Mendis Asoka D.
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