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Astron. Astrophys. Suppl. Ser. 138, 459-460

Observations of GRBs with the Infrared Space Observatory[*]

L. Hanlon1 - L. Metcalfe2 - M. Delaney1,11 - R. Laureijs2 - B. McBreen1 - N. Smith3 - B. Altieri2 - A. Castro-Tirado4,12 - E. Costa5 - M. Feroci5 - F. Frontera9 - T. Galama6 - J. Gorosabel4 - P. Groot6 - J. Heise7 - C. Kouveliotou8 - E. Palazzi9 - J. van Paradijs7,10 - L. Piro5 - M. Kessler2

Correspondence to:

1 - Department of Experimental Physics, University College Dublin, Belfield, Stillorgan Road, Dublin 4, Ireland
2 - ISO Science Operations Centre, Astrophysics Division, Space Science Department of ESA, Villafranca, Spain
3 - Cork Institute of Technology, Cork, Ireland
4 - LAEFF, Villafranca del Castillo, P.O. Box 50727, 28080 Madrid, Spain
5 - Istituto Astrofisica Spaziale, CNR, 00133 Roma, Italy
6 - Astronomical Institute "Anton Pannekoek", University of Amsterdam, The Netherlands
7 - SRON Utrecht, The Netherlands
8 - USRA at NASA/MSFC, Huntsville AL, U.S.A.
9 - ITESRE-CNR, Bologna, Italy
10 - Physics Department, University of Alabama, Huntsville AL, U.S.A.
11 - Stockholm Observatory, SE-133 36 Saltsjöbaden, Sweden
12 - IAA-CSIC, P.O. Box 03004, 18080 Granada, Spain

Received December 18, 1998; accepted March 10, 1999


We present results from the Target of Opportunity (TOO) program to observe GRB locations with the CAM and PHOT instruments aboard the Infrared Space Observatory (ISO). Four BeppoSAX GRB error circles were observed by ISO on timescales ranging from days to months after the GRB events. These observations represent the first prompt GRB counterpart searches at far-infrared wavelengths. A list of observations made in this TOO program, along with results of CAM follow-up observations of GRB 970508, are presented. A marginal CAM (12 $\mu$m) detection of a source, consistent with the position of the optical transient of GRB 970508, is reported.

Key words: gamma-ray bursts

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