On the runaway instability of self-gravitating torus around black holes

Details On the runaway instability of self-gravitating torus around black holes On the runaway instability of self-gravitating torus around black holes

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010jphcs.229a2007f&link_type=abstract

Journal of Physics: Conference Series, Volume 229, Issue 1, pp. 012007 (2010).

Physics

Scientific paper

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.

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