Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994avest..28q...3s&link_type=abstract
Astronomicheskii Vestnik, Tom 28, No. 2, p. 3 - 18
Astronomy and Astrophysics
Astronomy
Planetary Surfaces: Albedo, Planetary Surfaces: Laboratory Simulations
Scientific paper
This review is devoted to studies of the backscattering effects of regolith-like surfaces in the optical range. In this part, experimental investigations of the brightness opposition effect (BOE) are considered. The analysis of observations and laboratory data shows that: (a) BOE is characteristic for all atmosphereless celestial bodies including particles of cometary comae and of zodiacal light; (b) the BOE amplitudes for bright bodies (e.g., E-asteroids or ice satellites of giant planets) are usually higher than those for dark surfaces; (c) the BOE widths increase both with disintegration of particles of light-scattering surfaces and when the surface albedo decreases. According to some laboratory measurements, a bell-like phase dependence in the neighborhood of the zero phase angle can be revealed. It points to a non-shadow component in BOE. For the atmosphereless celestial bodies this feature has not yet been found.
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