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Issue A&A
Volume 411, Number 1, November III 2003
Special letters issue on: first science with integral
Page(s) L291 - L297
Section Letters
DOI http://dx.doi.org/10.1051/0004-6361:20031289



A&A 411, L291-L297 (2003)
DOI: 10.1051/0004-6361:20031289

Letter

The INTEGRAL Burst Alert System

S. Mereghetti1, D. Götz1, 2, J. Borkowski3, R. Walter3 and H. Pedersen4

1  Istituto di Astrofisica Spaziale e Fisica Cosmica - CNR, Sezione di Milano "G.Occhialini", via Bassini 15, 20133 Milano, Italy
2  Dipartimento di Fisica, Università degli Studi di Milano Bicocca, P.zza della Scienza 3, 20126 Milano, Italy
3  Integral Science Data Centre, Chemin d'Écogia 16, 1290 Versoix, Switzerland
4  Copenhagen University Observatory, Juliane Maries Vej 30, 2100 Copenhagen, Denmark

(Received 7 July 2003 / Accepted 21 August 2003)

Abstract
We describe the INTEGRAL Burst Alert System (IBAS): the automatic software for the rapid distribution of the coordinates of the Gamma-Ray Bursts detected by INTEGRAL. IBAS is implemented as a ground based system, working on the near-real time telemetry stream. During the first six months of operations, six GRB have been detected in the field of view of the INTEGRAL instruments and localized by IBAS. Positions with an accuracy of a few arcminutes are currently distributed by IBAS to the community for follow-up observations within a few tens of seconds of the event.


Key words: gamma rays: bursts

Offprint request: S. Mereghetti, sandro@mi.iasf.cnr.it

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