Dust Charging in Saturn's Rings: Observations and Theory

Details Dust Charging in Saturn's Rings: Observations and Theory Dust Charging in Saturn's Rings: Observations and Theory

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmae23a..03h&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #AE23A-03

Physics

2756 Planetary Magnetospheres (5443, 5737, 6033), 5465 Rings And Dust

Scientific paper

Saturn's rings show a variety of dusty plasma processes. The electrostatic charging and subsequent orbital dynamics of small grains can establish their size and spatial distributions, for example. Simultaneously, dust can alter the composition, density and temperature of the plasma surrounding it. The dynamics of charged dust particles can be surprisingly complex and fundamentally different from the well understood limits of gravitationally dominated motions of neutral particles or the adiabatic motion of electrons and ions in electromagnetic fields that dominate gravity. This talk will focus on recent Cassini observations at Saturn that are best explained by theories describing the effects of the magnetospheric fields and plasmas on the rings. As our best examples, we will discuss the physics describing the large-scale structure of the E-ring, and the formation of 'spokes' over the dense rings of Saturn.

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