The fine-scale density wave structure of Saturn's rings

E. Griv, M. Gedalin

Research output: Contribution to journalMeeting Abstractpeer-review


A self-consistent system of the Boltzmann and the Poisson equations is used to study the dynamical evolution of Saturn's main A, B, C rings composed of discrete mutually gravitating particles. The simplified case of rare collisions between identical particles, when the collision frequency is smaller than the orbital frequency, is examined by exploring in the Boltzmann equation a Krook model integral of collisions. Equations describing the quasilinear (or weakly nonlinear) stage of Jeans instability of small gravity perturbations in Saturn's rings are derived and solved analytically. The theory, as applied to Saturn's rings, predicts for several features, such as numerous irregular Jeans-unstable density wakes, with size and spacing between them of the order of 2pi h
Original languageEnglish GB
Pages (from-to)3168
JournalGeophysical Research Abstracts
StatePublished - 1 Apr 2003


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