[AAVSO-HEN] GRB 060206: High redshift burst

[grb at aavso.org]

The following is a GCN Circular circulated via the AAVSO network.
For an archive and more information on circulars visit:
http://lheawww.gsfc.nasa.gov/docs/gamcosray/legr/bacodine/gcn3_archive.html

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."