Strong damped Lyα absorption in the host of GRB 030323

Details Strong damped Lyα absorption in the host of GRB 030323 Strong damped Lyα absorption in the host of GRB 030323

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004nuphs.132..295v&link_type=abstract

Nuclear Physics B Proceedings Supplements, Volume 132, p. 295-300.

Physics

Nuclear Physics

1

Scientific paper

We present VLT spectroscopy of the afterglow of GRB 030323. Lyαis detected in absorption at z=3.37 with an inferred column density of logN(HI)=21.90+/-0.07 cm-2. This is larger than any confirmed QSO-selected damped Lyman alpha HI column density, showing that GRBs probe very high density regions in their host galaxies, most likely regions that are actively forming stars. This clearly demonstrates the potential of probing high-redshift star-formation with GRB afterglows.

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