Physics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufm.p13b1672j&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #P13B-1672
Physics
[5465] Planetary Sciences: Solid Surface Planets / Rings And Dust, [6275] Planetary Sciences: Solar System Objects / Saturn
Scientific paper
Phoebe has been argued to be possibly a captured satellite, moving on a retrograde orbit. Its very low albedo indicates that at least its surface chemical composition differs significantly from the regular icy satellites of Saturn. As all airless bodies in the solar system, it is expected to be a source of dust particles due to the continual bombardment by interplanetary and interstellar dust. We have developed models to follow the orbital evolution of micron and submicron sized dust under the influence of Saturn`s and solar gravity, radiation pressure, and electromagnetic perturbations. By following the long-term evolution of dust particles trajectories, we derive estimates for the fraction of dust captured into both regular and retrograde orbits in Saturn`s magnetosphere. The predicted size and spatial distributions of dust originating from Phoebe are expected to be readily observed by the Cassini Cosmic Dust Analyzer (CDA) due to their different composition and high impact speeds.
Horanyi Mihaly
Juhasz Andras
Kempf Sascha
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