Physics
Scientific paper
Sep 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988icar...75..527g&link_type=abstract
Icarus (ISSN 0019-1035), vol. 75, Sept. 1988, p. 527-539. NASA-supported research.
Physics
10
Particle Collisions, Planetary Rings, Transport Properties, Viscous Fluids, Angular Momentum, Physical Properties, Voyager Project
Scientific paper
The present treatment of the apparently paradoxical reversal of momentum transport, or 'negative viscosity', in such swarms of particles on Keplerian orbits as planetary rings, illuminates the importance of particles' physical properties. Even the slightest deviation from the idealized (uniform, highly elastic, perfectly slippery, spherical) particles will affect viscosity, yielding predictions that are inconsistent with the observed ring structure. It is presently suggested that the size of the larger bodies in the rings determines random velocities, viscosity, and a substantial portion of ring structural characteristics.
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