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Physics  1999 

Stability of spherically symmetric steady states in galactic dynamics against general perturbations

DOI: 10.1007/s002050100167

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Abstract:

Certain steady states of the Vlasov-Poisson system can be characterized as minimizers of an energy-Casimir functional, and this fact implies a nonlinear stability property of such steady states. In previous investigations by Y. Guo and the author stability was obtained only with respect to spherically symmetric perturbations. In the present investigation we show how to remove this unphysical restriction.

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