GRBM Detection Efficiency of GRBs

The GRBM subset of GRBs in common wih BATSE has been used to evaluate the mean GRBM efficiency over the whole range of GRB fluences. In particular, the GRBM energy-averaged efficiency can be estimated as a function of the arrival direction, given that this parameter is known by BATSE. The BATSE common sample has been preferred to the well localized GRBs, only for the better statistics (283 instead of 79 bursts).