Other
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja.....2327h&link_type=abstract
EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #2327
Other
Scientific paper
Recent in situ and remote sensing observations, combined with theoretical modeling greatly advanced our understanding of dust plasma interactions in planetary magnetospheres. There are many exciting phenomena associated with the interaction of magnetospheric fields and plasmas with the embedded dust grains. Lorentz resonances, gyrophase-drifts due to compositional and/or plasma density and/or plasma temperature gradients, transport due to charge or magnetic field fluctuations, shadow resonance and the coupling between radiation pressure and electrodynamic forces, for example, might all contribute to shaping the fine dust distribution in planetary rings. The dust becomes an integral component of the magnetosphere since it acts as a source/sink of the plasma. The produced low energy photo and secondary electrons or the sputtered off ions might significantly alter the magnetospheric plasma distribution, for example. Electrodynamic perturbations often couple with other perturbations (oblateness, radiation pressure, plasma and neutral drag, for example) and can lead to unusual dynamics: transport, capture and ejection. The study of the temporal and spatial evolution of fine dust grains provides a unique way to combine data from a large number of observations: plasma, plasma wave, dust and magnetic field measurements are all used to model the transport of dust in planetary magnetospheres. In this talk we review the most important dusty plasma effects found in the magnetospheres of Jupiter and Saturn.
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