Thickness of Saturn's rings inferred from Voyager 1 observations of microwave scatter

Details Thickness of Saturn's rings inferred from Voyager 1 observations of microwave scatter Thickness of Saturn's rings inferred from Voyager 1 observations of microwave scatter

Jan 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984sci...223..396z&link_type=abstract

Science (ISSN 0036-8075), vol. 223, Jan. 27, 1984, p. 396-398. NASA-supported research.

Astronomy and Astrophysics

Astronomy

13

Microwave Scattering, Saturn Rings, Thickness, Voyager 1 Spacecraft, Angular Distribution, Radio Occultation, Spaceborne Astronomy, Saturn, Rings, Thickness, Optical Properties, Wavelengths, Microwaves, Remote Sensing, Scattering, Voyager 1, Earth-Based Observations, Models, Theoretical Studies, Comparisons, Radio Occultations, C Ring, A Ring, Cassini Division

Scientific paper

Earth-based telescopic observations indicate that Saturn's rings are about 1 kilometer thick, while spacecraft measurements and theoretical considerations give an upper bound of about 100 meters. Analysis of a shielding effect present in radio occultation provides a sensitive new measure of the ring thickness. On the basis of this effect, Voyager 1 microwave measurements of near-forward scatter imply a thickness ranging from less than 10 meters in ring C to about 20 and 50 meters in the Cassini division and ring A, respectively. Monolayer models do not fit the observations in the latter two regions. The discrepancy between the Earth-based and spacecraft measurements may be due to warps in the ring plane or effects of tenuous material outside the primary ring system.

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