Saturn's rings through a microscope - Particle size constraints from the Voyager PPS scan

Details Saturn's rings through a microscope - Particle size constraints from the Voyager PPS scan Saturn's rings through a microscope - Particle size constraints from the Voyager PPS scan

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990icar...87..285s&link_type=abstract

Icarus (ISSN 0019-1035), vol. 87, Oct. 1990, p. 285-306.

Statistics

36

Particle Size Distribution, Saturn Rings, Voyager 2 Spacecraft, Cassini Mission, Photons, Poisson Density Functions, Polarimeters, Uranus Rings

Scientific paper

The Voyager-2 photopolarimeter PPS experiment obtained the highest resolution of any ring observation of Saturn, profiling the variation of optical depth in radial steps of about 100 meters. A detailed treatment of the PPS statistics is presented here, and it is shown how these statistics can be related to the particle size distribution. An expression for the excess noise in the scan due to large particles is obtained, and the observed noise is used to constrain the upper end of the size distribution through the rings. It is shown that the Cassini Division and the C Ring have the smallest proportion of large particles, while the A ring has the largest proportion.

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