Gravitational Waveforms of Kerr Black Holes Interacting with High-Density Matter

Abstract

Interactions of high-density matter with rapidly rotating black holes are a natural outcome of core collapse in massive stars, neutron star mergers, or the coalescence of black hole-neutron star binaries. An ensuing long-lived state of suspended accretion may explain GRB 030329/SN 2003dh and GRB 060614. It predicts a chirp in gravitational radiation with exponential decaying frequency, by correlation of the radius of the surrounding matter with an expanding ISCO during viscous relaxation to a nearly Schwarzschild spacetime. The asymptotic value (in kHz) provides novel metrology of the black hole mass. An optimal search algorithm 1 f M ≤ 5.9f M gw gw , is included.