Existence and stability of static shells for the Vlasov-Poisson System with a fixed central point mass

Details Existence and stability of static shells for the Vlasov-Poisson System with a fixed central point mass Existence and stability of static shells for the Vlasov-Poisson System with a fixed central point mass

2008-03-12

arxiv.org/abs/0803.1775v1

Physics

Mathematical Physics

26 pages

Scientific paper

10.1017/S0305004108001916

We consider the Vlasov-Poisson system with spherical symmetry and an exterior potential which is induced by a point mass in the center. This system can be used as a simple model for a newtonian galaxy surrounding a black hole. For this system, we establish a global existence result for classical solutions with shell-like initial data, i.e. the support of the density is bounded away from the point mass singularity. We also prove existence and stability of stationary solutions which describe static shells, where we use a variational approach which was established by Y. Guo and G. Rein.

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