SGR giant flares in the BATSE short GRB catalogue: constraints from spectroscopy

Davide Lazzati, Giancarlo Ghirlanda, Gabriele Ghisellini

The giant flare observed on Dec. 27th 2004 from SGR 1806-20 has revived the idea that a fraction of short (<2 s) Gamma Ray Bursts (GRBs) is due to giant flares from Soft Gamma Ray…