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 7066

GRB 071112C: RTT150 optical observations
2007-11-12T22:09:44Z (17 years ago)
Rodion Burenin at IKI, Moscow <>
R. Burenin, (IKI), I. Khamitov (TUG), M. Pavlinsky, R. Sunyaev (IKI),  
Z. Eker (TUG), U. Kiziloglu (METU), E. Gogus (Sabanci Uni.),
I. Bikmaev, N. Sakhibullin (KSU/AST)


The optical counterpart of GRB 071112C (GCN 7059) was observed with
Russian-Turkish 1.5-m telescope (RTT150, Bakirlitepe, TUBITAK National
Observatory, Turkey), under poor observational conditions. First image was
taken 16.7 min after the burst. Assuming R=16.0 and B=16.76 magnitudes for
nearby star USNO-B1.0 1183-0043866 we estimated the following magnitudes for
the OT:

18:49:39 UT, B=18.8
18:54:08 UT, R=18.7

During the first hour after the burst the power law slope of the fading OT
flux is -0.83 +- 0.09 in R band and is approximatly similar in BVI.

This message may be cited.
Looking for U.S. government information and services? Visit