Gamma-ray bursts and gravitational radiation from black hole-torus systems

Details Gamma-ray bursts and gravitational radiation from black hole-torus systems Gamma-ray bursts and gravitational radiation from black hole-torus systems

2001-09-25

arxiv.org/abs/astro-ph/0109429v1

Astronomy and Astrophysics

Astrophysics

Invited talk, to appear in Proc. 2nd Workshop high energy emission around black holes, KIAS, Seoul, Korea

Scientific paper

Cosmological gamma-ray bursts (GRBs) are probably powered by systems harboring a rotating black hole. These may result from hypernovae or black hole-neutron star coalescence. We identify short/long bursts with hyper- and suspended-accretion states around slowly/rapidly spinning black holes. Baryon poor jets, as input to the observed GRB/afterglow emissions, may result from dissipation in a gap along an open flux-tube on the axis of rotation of the black hole. The torus is expected to radiate a major fraction of the black hole luminosity into gravitational waves, which suggests that long GRBs may be the most powerful LIGO/VIRGO burst sources in the Universe. (Abbreviated)

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