The Sample of Gamma-ray Bursts Observed With SPI-ACS
Abstract
The SPI anticoincidence shield consists of 91 BGO crystals and is operated as a nearly omnidirectional gamma-ray burst detector above ~75 keV. Since the start of the mission 269 gamma-ray burst candidates have been detected. 110 bursts have been confirmed with the instruments included in the 3rd Interplanetary Network. Here we present a preliminary statistical analysis of the SPI-ACS sample of gamma-ray bursts and gamma-ray burst candidates; in particular we discuss the duration distribution of the bursts. A prominent population of short burst candidates (duration <200ms) is found which is discovered to be strongly contaminated by cosmic-ray nuclei interacting in the detectors.
Keywords
Cite
@article{arxiv.astro-ph/0405121,
title = {The Sample of Gamma-ray Bursts Observed With SPI-ACS},
author = {A. Rau and A. von Kienlin and K. Hurley and G. G. Lichti},
journal= {arXiv preprint arXiv:astro-ph/0405121},
year = {2010}
}
Comments
7 pages, 9 figures, esapub.cls, to appear in the Proceedings of the 5th INTEGRAL Workshop, Munich 2004