Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989natur.337..629j&link_type=abstract
Nature (ISSN 0028-0836), vol. 337, Feb. 16, 1989, p. 629-631.
Astronomy and Astrophysics
Astronomy
68
Asteroid Belts, Earth (Planet), Interplanetary Dust, Solar System, Gravitational Fields, Infrared Astronomy Satellite, Orbital Resonances (Celestial Mechanics), Solar Wind, Terrestrial Dust Belt, Solar System, Earth, Rings, Dust, Grains, Numerical Methods, Capture, Gravity Effects, Resonance, Orbits, Time Scale, Size, Radius, Motion, Eccentricity, Particles, Hypotheses, Shepherd Satellites, Dynamics, Satellite Observations, Iras Satellite, Asteroid Belt, Perturbations, Trapping
Scientific paper
Numerical integrations are used here to show that small dust grains can be temporarily captured into exterior orbit-orbit resonances with the earth, lasting from less than 10,000 years to more than 100,000 years. Grains with radii of 30-100 microns, orbiting in planes less than 10 deg from the plane of the solar system and with orbital eccentricities of less than 0.3, are captured most easily. It is argued that there should be an approximately toroidal cloud of particles, derived mostly from the asteroid belt, trapped into a variety of these exterior resonances. The cloud is mostly beyond the earth's orbit, but includes it.
Jackson Andrew
Zook Herbert A.
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