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Physics  2000 

Generic occurrence of rings in rotating systems

DOI: 10.1016/S0375-9601(00)00500-4

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Abstract:

In rotating scattering systems, the generic saddle-center scenario leads to stable islands in phase space. Non-interacting particles whose initial conditions are defined in such islands will be trapped and form rotating rings. This result is generic and also holds for systems quite different from planetary rings.

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