HR: 11:50h
AN: P52A-07    [Abstracts]
TI: Dusty Plasma Effects in Saturn's Rings
AU: * Horanyi, M
EM: horanyi@colorado.edu
AF: Laboratory for Atmospheric and Space Physics, and Department of Physics, University of Colorado, Boulder, CO 80309 United States
AU: Hartquist, T W
EM: t.w.hartquist@leeds.ac.uk
AF: School of Physics and Astronomy, University of Leeds, Leeds, LS2 9JT, United Kingdom
AU: Havnes, O
EM: ove@phys.uit.no
AF: Department of Physics, The Auroral Observatory, University of Troms\o, Troms\o, N-9037 Norway
AU: Mendis, D A
EM: mendis@ece.ucsd.edu
AF: Department of Electrical Engineering and Computer Sciences, University of California at San Diego, La Jolla, 92093 United States
AU: Morfill, G E
EM: gem@mpe-garching.mpg.de
AF: Centre for Interdisciplinary and Plasma Science, Max-Planck-Institut f\"ur extraterrestrische Physik, Garching, D-85740 Germany
AB: Planetary rings are our best examples of environments where dusty plasma effects can establish the size and spatial distributions of small grains. Simultaneously, dust often influences 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. In this talk we focus on observations that are best explained by theories concerning dusty plasma effects at Saturn. In addition to presenting our current models we also discuss our expectations for new discoveries based on existing observations at Jupiter, or on purely theoretical considerations. Our intent is to give an up-to-date overview of dusty-plasma effects in Saturn's magnetosphere and to draw attention to several outstanding problems that could be resolved by the {\it Cassini} mission.
DE: 5759 Rings and dust
DE: 6265 Planetary rings
DE: 6275 Saturn
SC: Planetary Sciences [P]
MN: 2004 AGU Fall Meeting