Motion of dust in a planetary magnetosphere - Orbit-averaged equations for oblateness, electromagnetic, and radiation forces with application to Saturn's E ring

Details Motion of dust in a planetary magnetosphere - Orbit-averaged equations for oblateness, electromagnetic, and radiation forces with application to Saturn's E ring Motion of dust in a planetary magnetosphere - Orbit-averaged equations for oblateness, electromagnetic, and radiation forces with application to Saturn's E ring

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993icar..101..244h&link_type=abstract

Icarus (ISSN 0019-1035), vol. 101, no. 2, p. 244-264.

Physics

44

Cosmic Dust, Planetary Magnetospheres, Planetary Orbits, Saturn Rings, Lorentz Force, Orbit Perturbation, Perturbation Theory, Planets, Dust, Magnetosphere, Oblateness, Orbital Elements, Inclination, Electromagnetic Effects, Radiation Effects, Saturn, Rings, Enceladus, E Ring, Theoretical Studies, Motion, Transport, Grains, Gravity Effects, Parameters, Models, Perturbations, Numerical Methods, Particles, Tethys, Symmetry, Structure, Pressure, Calculations, Eccentricity, Satellites, Orbital Dynamics, Thickne

Scientific paper

The orbital dynamics of micrometer-sized dust grains is explored numerically and analytically, treating the strongest perturbation forces acting on close circumplanetary dust grains: higher-order gravity, radiation pressure, and the electromagnetic force. The appropriate orbit-average equations are derived and applied to the E ring. Arguments are made for the existence of azimuthal and vertical asymmetries in the E ring. New understanding of the dynamics of E ring dust grains is applied to problems of the ring's breadth and height. The possibility for further ground-based and spacecraft observations is considered.

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