Ballistic transport in Saturn's rings: An analytic theory |
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| Authors: | Jack J Lissauer |
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| Institution: | Space Science Division, NASA-Ames Research Center, Moffett Field, California 94035, USA |
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| Abstract: | Ejecta from impacts of micrometeoroids on Saturn's ring particles will, in most cases, remain in orbit about Saturn and eventually be reaccreted by the rings, possibly at a different radial location. The resulting mass transport has been suggested as the cause of some of the features observed in Saturn's rings. Previous attempts to model this transport have used numerical simulations which have not included the effects of the angular momentum transport coincident with mass transport. An analytical model for ballistic mass transport in Saturn's rings is developed. The model includes the effects of angular momentum advection and shows that the net material movement due to angular momentum advection is comparable to that caused by direct ballistic mass transport. |
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