Linear and Nonlinear Dynamics of Relativistic Tori

Details Linear and Nonlinear Dynamics of Relativistic Tori Linear and Nonlinear Dynamics of Relativistic Tori

2003-03-14

arxiv.org/abs/gr-qc/0303057v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Invited Talk at the 15th SIGRAV Conference, Frascati Sept. 2002; IOP Conference Series, one reference added

Scientific paper

I present results of two-dimensional general relativistic hydrodynamical simulations of constant specific angular momentum tori orbiting around a Schwarzschild black hole. After introducing axisymmetric perturbations, these objects either become unstable to the runaway instability or respond with regular oscillations. The latter, in particular, are responsible for quasi-periodic bursts of accretion onto the black hole as well as for the emission of intense gravitational radiation, with signal-to-noise ratios at the detector which are comparable or even larger than the typical ones expected in stellar-core collapse.

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