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Astron. Astrophys. 333, 417-418 (1998)


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Research Note

Archival search for recurrent activity at the position of the gamma-ray burst GRB 970228 optical counterpart

J. Gorosabel and A. J. Castro-Tirado

Laboratorio de Astrofísica Espacial y Física Fundamental (LAEFF-INTA), P.O. Box 50727, E-28080 Madrid, Spain

Received 5 January 1998 / Accepted 27 January 1998

Abstract

We have examined 8004 plates at the Harvard College Observatory Plate Collection searching for optical transient emission from the gamma-ray burst GRB 970228. This is the first archival search carried out so far for a gamma-ray burst with known transient optical emission. The total exposure time amounts to [FORMULA] yr. No convincing optical activity was found above 12.5 mag at the expected position of the GRB 970228 optical counterpart.

Key words: gamma rays: bursts

Send offprint requests to: J. Gorosabel (jgu@laeff.esa.es)

© European Southern Observatory (ESO) 1998

Online publication: April 20, 1998
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