PREPRINT
94E579B8-8DF6-45CA-9EE9-B64FD838F080

Phase-Space Structure for Narrow Planetary Rings

L. Benet, O. Merlo
arXiv:nlin/0410028

Submitted on 18 October 2004

Abstract

We address the occurrence of narrow planetary rings under the interaction with shepherds. Our approach is based on a Hamiltonian framework of non-interacting particles where open motion (escape) takes place, and includes the quasi-periodic perturbations of the shepherd's Kepler motion with small and zero eccentricity. We concentrate in the phase-space structure and establish connections with properties like the eccentricity, sharp edges and narrowness of the ring. Within our scattering approach, the organizing centers necessary for the occurrence of the rings are stable periodic orbits, or more generally, stable tori. In the case of eccentric motion of the shepherd, the rings are narrower and display a gap which defines different components of the ring.

Preprint

Comment: 17 pages, 6 low-resolution ps figures (some in colour)

Subjects: Nonlinear Sciences - Chaotic Dynamics; Astrophysics

URL: https://arxiv.org/abs/nlin/0410028