2001ApJ...555L..41V

Black holes surrounded by a disk or torus may drive the enigmatic cosmological gamma-ray bursts (GRBs). Equivalence in poloidal topology to pulsar magnetospheres shows a high incidence of the black hole luminosity L_H into the surrounding magnetized matter. We argue that this emission is reradiated into gravitational waves at L_GW≃L_H/2 in frequencies on the order of 1 kHz, winds, and, potentially, MeV neutrinos. The total energy budget and input to the GRB from baryon-poor jets are expected to be standard in this scenario, consistent with recent analysis of afterglow data. Collimation of these outflows by baryon-rich disk or torus winds may account for the observed spread in opening angles up to about 35°. This model may be tested by future LIGO/VIRGO observations.