Morphological properties of short duration Gamma Ray Bursts

Abstract

In this paper, we study a sample of short duration bursts contained in the 3B BATSE catalogue. We fit the time profiles of these GRBs with lognormal functions and study various temporal properties of these objects. In most of the mutipeaked bursts, we find that the temporal asymmetry of individual pulses evolves with time i.e. subsequent pulses tend to be more symmetric.