Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...175..289s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 175, no. 1-2, March 1987, p. 289-291.
Astronomy and Astrophysics
Astrophysics
9
Interplanetary Dust, Radial Velocity, Solar Corona, Grain Size, Kepler Laws, Silicon Dioxide, Zodiacal Light
Scientific paper
The observations made during the July 31, 1981 solar eclipse of the F-corona radial velocities between 3 and 7 solar radii are interpreted, assuming direct circular Keplerian motion of dust grains. Diffraction and isotropic scattering are considered. If the grains are assumed to be of silica, a best fit to observations is found for grain radii of about 0.4 micron, a border of dust-free zone from 6 to 14 solar radii, or a high concentration of grains at the same interval of heliocentric distances.
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