A search for supernovae preceding short gamma-ray bursts

V.I. Dokuchaev and Yu.N. Eroshenko1

Abstract

We have found the probability of double events ßupernova - gamma-ray burst" (GRB) separated by a time interval of a few years. Their sources can be supernova explosions in binary systems accompanied by formation of a short-lived pair of compact objects which produce a short GRB while merging. Each of the ~ 500 short SGBs must have an optical precursor, a supernova at a time interval of < 2 years. We discuss the possible relationship between SN 1997ds and GRB 990425.

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