The dynamics of weakly charged dust - Motion through Jupiter's gravitational and magnetic fields

Details The dynamics of weakly charged dust - Motion through Jupiter's gravitational and magnetic fields The dynamics of weakly charged dust - Motion through Jupiter's gravitational and magnetic fields

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92.2264s&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, March 1, 1987, p. 2264-2280.

Physics

43

Charged Particles, Interplanetary Dust, Jupiter (Planet), Particle Motion, Planetary Gravitation, Planetary Magnetic Fields, Cross Sections, Jupiter Rings, Lorentz Force, Perturbation Theory, Planetary Rings, Jupiter, Magnetic Fields, Gravity Fields, Dynamics, Charged Particles, Dust, Motion, Perturbations, Rings, Oblateness, Harmonics, Models, Resonance, Amplitude, Oscillations, Optical Properties, Depth, Halos, Boundaries, Evolution, Time Scale, Equations Of Motion, Calculations, Acceleration, Trajectorie

Scientific paper

Perturbation equations for the motions of weakly charged dust grains in planetary rings are derived, with emphasis on the Jovian ring system, and the nature of the trajectories at various locations within the ring system are studied in depth. The analytical results are tested against numerical integrations of the full equations of motion. The overall ring topology is predicted by averaging over large numbers of grains, and the results are compared with Voyager images. It is shown how electromagnetic forces can create ring boundaries and vertical warping of the ring plane, as well as account both for the enhanced vertical thickness of the halo relative to the main ring and for radial structure within the main ring itself. The successful and unsuccessful predictions of the model concerning the Jovian ring system are discussed.

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