Prospects for true calorimetry on Kerr black holes in core-collapse supernovae and mergers

Maurice H. P. M. van Putten, Nobuyuki Kanda, Hideyuki Tagoshi +3

Observational evidence for black hole spin down has been found in the normalized light curves of long GRBs in the BATSE catalogue. Over the duration $T_{90}$ of the burst, matter s…