6533b7ddfe1ef96bd1275210
RESEARCH PRODUCT
On the runaway instability of self-gravitating torus around black holes
Masaru ShibataJosé A. FontPedro J. Monterosubject
PhysicsHistoryAstrophysics::High Energy Astrophysical PhenomenaAstronomyTorusAstrophysicsInstabilityAccretion (astrophysics)Computer Science ApplicationsEducationNeutron starMagnetorotational instabilityStellar black holeAstrophysics::Earth and Planetary AstrophysicsAstrophysics::Galaxy AstrophysicsGamma-ray burst progenitorsdescription
Black holes surrounded by self-gravitating tori are astrophysical systems which may naturally form following the core collapse of a massive star or the merger of two neutron stars. We present here results from fully general relativistic numerical simulations of such systems in order to assess the influence of the torus self-gravity on the onset of the so-called runaway instability. This instability, which might drive the rapid accretion of the disk on shorter timescales than those required to power a relativistic fireball, potentially challenges current models of gamma-ray bursts. Our simulations indicate that the self-gravity of the torus does not actually favour the onset of the instability.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-05-01 | Journal of Physics: Conference Series |