Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000asthe..93..665d&link_type=abstract
The Astronomical Herald (ISSN 0374-2466), Vol. 93, No. 11, p. 665 - 672 (2000)
Astronomy and Astrophysics
Astronomy
Scientific paper
The detailed observations of Saturn's main ring have revealed the existence of substructures such as a lot of ringlet structures like a record, much smaller scale, density gaps in a ringlet, and asymmetrical phenomena in the ring. In this paper the author introduces the results of local N-Body simulations carried out to explain the formation of such substructures. The simulations showed the formation of the wake structure induced by the effects of both, self-gravitational forces of particles and energy damping through inelastic collisions between particles. It is found that the typical scale of the wakes is given by the longest unstable wavelength against gravitational perturbations in a thin disk. He also examined the relation between the wakes obtained from simulations and the substructures observed in the ring. The fact that the wake is consistent with the observation may suggest the existence of the wakes in the real ring system.
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