Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993em%26p...63....9k&link_type=abstract
Earth, Moon, and Planets (ISSN 0167-9295), vol. 63, no. 1, p. 9-13
Astronomy and Astrophysics
Astronomy
3
Astronomical Models, Electromagnetic Radiation, Interplanetary Dust, Poynting-Robertson Effect, Solar Radiation, Equations Of Motion, Particle Acceleration, Radiation Pressure
Scientific paper
The action of the solar electromagnetic radiation on the motion of interplanetary dust particle of the plane mirror form is investigated. It is shown that for rapidly rotating plane mirror the speed of inspiralling toward the Sun is about a factor of 4 lower than that for spherical mirror of the same cross-sectional area. In principle, it is also possible that the plane mirror can be expelled from the inner part of the Solar System. Presented derivation is a little more general - it is considered that some parts of the incident radiation can be also absorbed or transmitted, not only reflected. Obtained results show that the Poynting-Robertson effect is strongly model-dependent. It is suggested that for real irregular porous particles the speed of inspiralling toward the Sun can be smaller than that for perfectly absorbing sphere. Orbital plane can change in time.
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