Short gamma-ray bursts in the SPI-ACS INTEGRAL experiment |
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| Authors: | P Yu Minaev A S Pozanenko V M Loznikov |
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| Institution: | 1.Space Research Institute,Russian Academy of Sciences,Moscow,Russia;2.Sternberg Astronomical Institute,Moscow,Russia |
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| Abstract: | We analyze short-duration gamma-ray bursts (T
90<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-ray bursts recorded in the SPI-ACS experiment may be as high as 30 to 45%. We find the
fraction of short gamma-ray bursts to augment while increasing the lower energy threshold. We report evidence for the absence
of the class of very short gamma-ray bursts. |
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