On the stability of self-gravitating accreting flows

Details On the stability of self-gravitating accreting flows On the stability of self-gravitating accreting flows

2008-12-09

arxiv.org/abs/0812.1762v1

Phys.Rev.D78:124016,2008

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, accepted for publication in PRD

Scientific paper

10.1103/PhysRevD.78.124016

Analytic methods show stability of the stationary accretion of test fluids but they are inconclusive in the case of self-gravitating stationary flows. We investigate numerically stability of those stationary flows onto compact objects that are transonic and rich in gas. In all studied examples solutions appear stable. Numerical investigation suggests also that the analogy between sonic and event horizons holds for small perturbations of compact support but fails in the case of finite perturbations.

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