  We study gravitational radiation from various proposed gamma-ray burst (GRB)
progenitor models, in particular compact mergers and massive stellar collapses.
These models have in common a high angular rotation rate, and the final stage
involves a rotating black hole and accretion disk system. We consider the
in-spiral, merger and ringing phases, and for massive collapses we consider the
possible effects of asymmetric collapse and break-up, as well bar-mode
instabilities in the disks. We calculate the strain and frequency of the
gravitational waves expected from various progenitors, at distances based on
occurrence rate estimates. Based on simplifying assumptions, we give estimates
of the probability of detection of gravitational waves by the advanced LIGO
system from the different GRB scenarios.
