Breaking dust-Alfvénic Mach barriers at Saturn

Shukla, P. K. and Mamun, A. A. and Bingham, R. (2003) Breaking dust-Alfvénic Mach barriers at Saturn. Physica Scripta, 68 (4). pp. 293-294. ISSN 0031-8949 (https://doi.org/10.1238/Physica.Regular.068a00293)

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Abstract

A theoretical prediction for the formation of dust-Alfvénic Mach cones in Saturn's rings is made. It is explicitly shown that for typical dusty plasma parameters corresponding to Saturn's dense rings, Mach cones are only formed by dust-Alfvén waves which are found to be more prominent than any other longitudinal waves (e.g., dust-acoustic waves). The dust-Alfvénic Mach cones that we have reported here are expected to be observed in Saturn's rings by CASSINI, arriving at Saturn in 2004.