Short gamma-ray bursts. Very bright short hard GRB 051103: a likely giant flare from soft gamma-ray repeater in a nearby galaxy

E. P. Mazets, R. L. Aptekar, D. D. Frederiks, S. V. Golenetskii, V. N. Il'inskii, V. D. Pal'shin
Ioffe Physico-Technical Institute, Politekhnicheskaya 26, 194021 St.Petersburg, Russia

We briefly review recent advances in the field of short gamma-ray bursts (GRBs). We discuss the connection of giant flares from soft gamma-ray repeaters (SGRs) in nearby galaxies and short GRBs. We analyze the very bright short hard GRB 051103, discovered by Konus-Wind and localized by IPN, and argue that it is likely to be a giant SGR flare in the nearby galaxy M81 (NGC 3031).

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