The Optical Afterglow of GRB 030226

Details The Optical Afterglow of GRB 030226 The Optical Afterglow of GRB 030226

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aipc..727..483k&link_type=abstract

GAMMA-RAY BURSTS: 30 YEARS OF DISCOVERY: Gamma-Ray Burst Symposium. AIP Conference Proceedings, Volume 727, pp. 483-486 (2004).

Physics

1

Gamma-Ray Sources, Gamma-Ray Bursts

Scientific paper

We report on optical and near-infrared follow-up observations of the afterglow of GRB 030226 performed with the telescopes at ESO La Silla and Paranal. Our observations started 0.2 days after the burst when the afterglow was at a magnitude of R ~ 19. One week later the magnitude of the afterglow had fallen to R=25, and at two weeks after the burst it could no longer be detected (R > 26). VLT blue-band spectra show two absorption line systems at redshifts z = 1.962 +/- 0.001 and 1.986 +/- 0.001, indicating a metal-rich environment of the burster, and placing the burster very likely at z = 1.986 +/- 0.001.

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