Dust torus around Mars

Details Dust torus around Mars Dust torus around Mars

Feb 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995jgr...100.3277j&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 100, no. E2, p. 3277-3284

Physics

19

Deimos, Interplanetary Dust, Micrometeoroids, Orbital Mechanics, Phobos, Radiation Pressure, Toruses, Mars (Planet), Meteoritic Damage, Planetary Orbits, Pressure Oscillations

Scientific paper

We investigate the orbital dynamics of small dust particles generated via the continuous micrometeoroid bombardment of the Martian moons. In addition to Mar's oblateness, we also consider the radiation pressure perturbation that is complicated by the planet's eccentric orbit and tilted rotational axis. Considering the production rates and the lifetimes of dust grains, we show that particles from Deimos with radii of about 15 micrometers are expected to dominate the population of a permanently present and tilted dust torus. This torus has an estimated peak number density of approximately equals 5 x 10-12/cu cm and an optical depth of approximately equals 4 x 10-8.

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