Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
Introducing Einstein Probe, Astro Flavored Markdown, and Notices Schema v4.0.0. See news and announcements

GCN Circular 6499

GRB 070611: VLT redshift
2007-06-11T13:34:01Z (17 years ago)
Christina Thoene at Niels Bohr Institute,DARK Cosmo Ctr <>
Christina C. Thoene (DARK), Pall Jakobsson (Univ. of Hertfordshire), Johan
P. U. Fynbo, Daniele Malesani, Jens Hjorth (DARK) and Paul M. Vreeswijk
(ESO) report:

We observed the OT (Rykoff et al., GCN 6497) of GRB 070611 (Stroh et al.,
GCN 6494) with FORS2/VLT using grism 300V through thin clouds. 2x30 min
spectra were acquired starting on June 11, UT 09:37.

In the spectra, we detect Lyman alpha, SiII, OI, CII, CIV and AlII from
which we infer a redshift of z=2.04 for that burst. In addition, we detect Mg II
and Fe II from an intervening system at z=1.29.

We thank the Paranal staff for excellent support, in particular Arjan Bik
and Mario van den Ancker.
Looking for U.S. government information and services? Visit