Physics
Scientific paper
Jan 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002assl..278...95z&link_type=abstract
Solar System Remote Sensing, p. 95
Physics
Planetary Surfaces, Regolith, Polarized Light, Scattering, Comets, Dust, Models
Scientific paper
The planetary regoliths and dust of comets exhibit negative polarization branch (NPB) of light scattered at small phase angles. One can see good resemblance of NPB for such different objects; in both cases the NPB have a parabolic shape, and close values of the inversion angle (near 20 deg) and depth (near 1 percent). Thus it is reasonable to suppose that this resemblance can evidence a common origin of the dust and regolith NPB. Nevertheless, here we demonstrate that the mechanisms of NPB for comets and planetary surfaces can be quite different. In case of comets this can be due to scattering by individual particles, and for planetary regoliths this could be a combination of the "comet" mechanism and the coherent backscatter effect.
Shkuratov Yu. G.
Zubko Evgenij S.
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