Skip to main content
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