The optical afterglow and host galaxy of GRB 000926

Details The optical afterglow and host galaxy of GRB 000926 The optical afterglow and host galaxy of GRB 000926

2001-10-29

arxiv.org/abs/astro-ph/0110603v1

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures, contribution to the procedings of the conference ``Lighthouses of the Universe'' held in Garching (Germany

Scientific paper

10.1007/10856495_24

In this paper we illustrate with the case of GRB 000926 how Gamma Ray Bursts (GRBs) can be used as cosmological lighthouses to identify and study star forming galaxies at high redshifts. The optical afterglow of the burst was located with optical imaging at the Nordic Optical Telescope 20.7 hours after the burst. Rapid follow-up spectroscopy allowed the determination of the redshift of the burst and a measurement of the host galaxy HI-column density in front of the burst. With late-time narrow band Ly-alpha as well as broad band imaging, we have studied the emission from the host galaxy and found that it is a strong Ly-alpha emitter in a state of active star formation.

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