6533b82bfe1ef96bd128e380
RESEARCH PRODUCT
Influence of self-gravity on the runaway instability of black-hole-torus systems.
Masaru ShibataPedro J. MonteroJosé A. Fontsubject
PhysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)Angular momentumAstrophysics::High Energy Astrophysical PhenomenaGeneral Physics and AstronomyFOS: Physical sciencesTorusMechanicsGeneral Relativity and Quantum Cosmology (gr-qc)Mass ratioInstabilityGeneral Relativity and Quantum CosmologyBlack holeNumerical relativityGeneral Relativity and Quantum CosmologyClassical mechanicsRotating black holeSpin-flipAstrophysics - High Energy Astrophysical Phenomenadescription
Results from the first fully general relativistic numerical simulations in axisymmetry of a system formed by a black hole surrounded by a self-gravitating torus in equilibrium are presented, aiming to assess the influence of the torus self-gravity on the onset of the runaway instability. We consider several models with varying torus-to-black hole mass ratio and angular momentum distribution orbiting in equilibrium around a non-rotating black hole. The tori are perturbed to induce the mass transfer towards the black hole. Our numerical simulations show that all models exhibit a persistent phase of axisymmetric oscillations around their equilibria for several dynamical timescales without the appearance of the runaway instability, indicating that the self-gravity of the torus does not play a critical role favoring the onset of the instability, at least during the first few dynamical timescales.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-04-19 | Physical review letters |