Formation of sharp ringlets by inelastic collisions

Details Formation of sharp ringlets by inelastic collisions Formation of sharp ringlets by inelastic collisions

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jpsj...60.3953s&link_type=abstract

Physical Society of Japan, Journal (ISSN 0031-9015), vol. 60, Nov. 1991, p. 3953-3966.

Astronomy and Astrophysics

Astronomy

Astronomical Models, Gas Giant Planets, Inelastic Collisions, Planetary Evolution, Planetary Rings, Gravitational Fields, Monte Carlo Method

Scientific paper

The possibility that the sharp ringlets observed around giant planets of the solar system are generated through inelastic collisions is investigated. First, a model is defined, and then ringlet formation is shown to occur under certain conditions on the rebound coefficients. A 3D case with 2000-body was then simulated. If the condition is satisfied, particles under the gravitational influence of a planet are shown to evolve from a 3D torus to a 2D disk, and finally to 1D ringlets. The form is thus simplified through inelastic collisions. This result is contrary to the common notion that collisions among the constituents of planetary rings would cause the rings to lose their sharp features.

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