Ring-Down of AN Accreting Black Hole

Details Ring-Down of AN Accreting Black Hole Ring-Down of AN Accreting Black Hole

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001rfg..conf..311f&link_type=abstract

REFERENCE FRAMES AND GRAVITOMAGNETISM. Proceedings of the XXIII Spanish Relativity Meeting. Held 6-9 September 2000 in Valladoli

Physics

Scientific paper

The quasi-normal mode (QNM) ring-down of massive black holes excited at their birth in the gravitational collapse of stellar configurations may be detectable by the new generation of gravitational wave interferometers. We study new qualitative features emerging in the emitted QNM signal in the presence of accretion events which would add a significant fraction of mass to the central black hole on a dynamical timescale. To this aim we numerically simulate spherically symmetric general relativistic black hole accretion of perfect fluid matter in combination with appropriate modeling of non-spherical spacetime perturbations of the underlying solution. It is shown that the QNM frequency, dimensionally scaling with the mass of the black hole, is a sensitive indicator of the mass accretion rate.

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