Other
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja....10424s&link_type=abstract
EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #10424
Other
Scientific paper
We present an analytical model of impact-generated ejecta dust clouds surrounding planetary satellites. The dust production via bombardment of a satellite surface is described in a probabilistic way, and a general phase-space distribution function of the ensemble of the ejected dust grains is calculated. In particular, we model the dust clouds detected around the Galilean satellites of Jupiter. The main aim is to predict the asymmetries in the dust clouds which may arise from the orbital motion of the parent body through a field of impactors. The Galileo dust detector data from flybys at Europa, Ganymede and Callisto are compatible with our model, assuming projectiles to be interplanetary micrometeorids. The analysis of the data suggests that the isotropically distributed interplanetary impactors are more likely to be the source of the measured dust clouds then other impactor populations, namely of planetary origin, or interplanetary retrograde or low-e, low-i projectiles.
Krivov Alexander V.
Krueger Hans
Miodrag Sremčević
Spahn Frank
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