Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989icar...80..104d&link_type=abstract
Icarus (ISSN 0019-1035), vol. 80, July 1989, p. 104-135.
Astronomy and Astrophysics
Astronomy
47
Astronomical Photometry, Radiative Transfer, Saturn Rings, Albedo, Backscattering, Light Scattering, Regolith, Saturn, Radiative Transfer, Models, B Ring, Rings, Scattering, Spokes, Wavelengths, Spacecraft Observations, Voyager Mission, Particles, Surface, Regolith, Albedo, Ice, Dust, Optical Properties, Depth, Micrometeoroids, Age, Photographs, Photometry, Calculations, Pps Instrument, Parameters, Comparisons, Earth-Based Observations, Brightness
Scientific paper
The present investigation of Voyager images of the Saturn outer B ring's light-scattering behavior gives attention to the four radial regions formed by brighter and darker areas within and outside the 'spokes'. The B-ring particles are found to have a strongly backscattering phase function and a large-particle scattering albedo of 0.54 in the dark regions and 0.58 in the bright ones; these albedos are interpretable as due to multiple scattering among very pure ice grains covering the ring particle surfaces. It is shown that dark micrometeoroid impacts into the B ring would have darkened the particles to their current spherical albedo in as little as 100 to 200 million years.
Cuzzi Jeff N.
Dones Luke
Doyle Laurance R.
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