Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983pazh....9..188v&link_type=abstract
(Pis'ma v Astronomicheskii Zhurnal, vol. 9, Mar. 1983, p. 188-192) Soviet Astronomy Letters (ISSN 0360-0327), vol. 9, Mar.-Apr.
Astronomy and Astrophysics
Astronomy
4
Interplanetary Dust, Poynting-Robertson Effect, Radiation Pressure, Solar Radiation, Anisotropic Media, Dielectrics, Particle Size Distribution
Scientific paper
Calculations of the nonradial component of the solar radiation force exerted on homogeneous cylindrical grains of different sizes and optical properties are described. Torques induced by defects in the grain shape and surface are ignored along with electromagnetic forces and the solar wind pressure. The radiation pressure force is found to have a nonradial component which can fundamentally alter the motion of interplanetary grains. This force component, which for micron-sized cylindrical grains will be 100-10,000 times the Poynting-Robertson braking effect, will effectively sweep the zodiacal cloud grains out of the ecliptic plane. The observed inclination of the symmetry plane of the zodical dust cloud relative to the ecliptic plane might thus reflect the sector structure of the interplanetary magnetic field. The nonradial force component might also affect the orientation of the dust tails of comets.
Ilin V. B.
Voshchinnikov Nikolai V.
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