Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 8434

GRB 081028: Magellan redshift
2008-10-28T21:57:17Z (16 years ago)
Edo Berger at Harvard <>
E. Berger, R. Foley (Harvard), R. Simcoe (MIT), and J. Irwin (U. Michigan)

"We observed the optical afterglow (GCNs 8424, 8425, 8430) of GRB 081028
(GCN 8421) with the Magellan Echellette Spectrograph (MagE) on the
Magellan/Clay 6.5-m telescope starting on 2008 Oct. 28.326 UT for a total
integration time of 1800 sec.  We find a wide range of absorption features
(including Ly-alpha, SII, NV, SiIV, CIV, FeII, etc.) at a redshift of
z=3.038, which we interpret as the redshift of the GRB.  In addition, we
find several intervening CIV and MgII absorbers."
Looking for U.S. government information and services? Visit