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Short gamma-ray bursts in the SPI-ACS INTEGRAL experiment

Minaev, P. Yu.; Pozanenko, A. S.; Loznikov, V. M.

We analyze short-duration gamma-ray bursts (T₉₀<2 s) recorded in the SPI-ACS experiment of the INTEGRAL observatory. We found an extended emission in the averaged light curve of both short-duration gamma-ray bursts and unidentified short-duration events. We show that the fraction of short-duration gamma-ray bursts among all the gamma…