Volume 411, Number 1, November III 2003
Special letters issue on: first science with integral
|Page(s)||L299 - L305|
|Published online||17 November 2003|
Letter to the Editor
INTEGRAL Spectrometer SPI's GRB detection capabilities *
GRBs detected inside SPI's FoV and with the anticoincidence system ACS
Max-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse, 85748 Garching, Germany,
2 Institut für Astronomie und Astrophysik, Universität Tübingen, Sand 1, 72076 Tübingen, Germany
3 INTEGRAL Science Data Centre, Chemin d'Écogia 16, 1290 Versoix, Switzerland
4 Science Operations and Data Systems Division of ESA/ESTEC, SCI-SDG, Keplerlaan 1, Postbox 299, 2200 AG Noordwijk, The Netherlands
5 Department of Experimental Physics, University College Dublin, Stillorgan Road, Dublin 4, Ireland
6 Space Research Group, Univ. of Birmingham B15 2TT, Birmingham, UK
7 UC Berkeley Space Sciences Laboratory, Berkeley, CA 94720-7450, USA
8 Space and Remote Sensing Sciences, NIS-2 Mail Stop D436, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
9 Dept. of Physics, UAH, National Space Science & Technology Center, Huntsville, AL 35805, USA
10 Centre d'Études Spatiales des Rayonnements, 9 avenue du Colonel Roche, 31028 Toulouse, France,
Corresponding author: A. von Kienlin, firstname.lastname@example.org
Accepted: 8 August 2003
The spectrometer SPI, one of the two main instruments of the INTEGRAL spacecraft, offers significant gamma-ray burst detection capabilities. In its 35° (full width) field of view SPI is able to localise gamma-ray bursts at a mean rate of ~0.8/month. With its large anticoincidence shield of 512 kg of BGO crystals SPI is able to detect gamma-ray bursts quasi omni-directionally with a very high sensitivity. Burst alerts of the anticoincidence shield are distributed by the INTEGRAL Burst Alert System. In the first 8 months of the mission about 0.8/day gamma-ray burst candidates and 0.3/day gamma-ray burst positions were obtained with the anticoincidence shield by interplanetary network triangulations with other spacecrafts.
Key words: gamma-ray bursts / GRB / gamma-ray astronomy / INTEGRAL / SPI
© ESO, 2003
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