[vsnet-grb-info 2849] GRB 060206: High redshift burst

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4686
SUBJECT: GRB 060206: High redshift burst
DATE:    06/02/06 07:39:47 GMT
FROM:    Johan U. Fynbo at U.Copenhagen  <jfynbo at astro.ku.dk>

Johan P. U. Fynbo, Brian L. Jensen, José María Castro Cerón
(DARK Cosmology Centre), Jyri Naeraenen (Helsinki Observatory) report
on behalf of a larger collaboration:

"Using ALFOSC on the Nordic Optical Telescope we have obtained
a spectrum of the afterglow of GRB 060206 (GCN #4682, 4683, #4684).
The spectrum shows a rich Lyman-alpha forest as well as metal lines
from the GRB host/environment. We still do not have a formal
wavelength calibration, but a preliminary analysis indicates
a redshift close to 5."