Posted: Feb 21, 2012 4:27 pm
... Look at it this way: when a massive star collapses, some of its matter gets blown out into space, but much of it remains, and forms a BH if there is enough of it. I'm only saying that a similar thing could happen when two BHs collide - some energy gets radiated (assuming, gravitational waves actually exist, which has not been demonstrated yet), but other energy may be involved in internal conversion, just as it must do when BHs form in the first place.