Physics
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja......322k&link_type=abstract
EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #322
Physics
Scientific paper
Planar circular restricted three-body problem with solar electromagnetic radiation is investigated. The orbital evolution of nonspherical dust grains of radii of the order micron is numerically calculated. Attention is paid to close exterior resonances with the Neptune orbit. The numerical experiments are concentrated on possible high capture efficiency of the resonances. Physical difference between possibilities of resonant captures for spherical and nonspherical dust particles is pointed out. As for spherical particles, the action of solar electromagnetic radiation corresponds to the Poynting-Robertson effect. Comparison between exterior resonances of the Neptune and of the Earth yields that even low degree resonances (e. g., 2:3) exist for Neptune - this is caused by larger mass of the Neptune than that of the Earth. As for nonspherical particles, equation of motion for arbitrarily shaped dust particle is much more complicated than that corresponding to the Poynting-Robertson effect. Detail evolution depends strongly on optical properties of the particle: complex refractive index, shape of the particle, size of the particle. Particle orbits may be stabilized in the zones which do not completely correspond to circular restricted three-body problem.
Klacka Jozef
Kocifaj Miroslav
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