[vsnet-grb-info 10140] GRB 110112A: optical upper limit
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Fri Jan 21 06:37:11 JST 2011
TITLE: GCN CIRCULAR
NUMBER: 11589
SUBJECT: GRB 110112A: optical upper limit
DATE: 11/01/20 21:37:07 GMT
FROM: Alexei Pozanenko at IKI, Moscow <apozanen at iki.rssi.ru>
K. Grankin, V. Rumyantsev (CrAO), A. Pozanenko (IKI) report on behalf of
larger GRB follow-up collaboration:
We observed the field of the Swift GRB 110112A (Stamatikos et al., GCN
11553) with AZT-11 telescope of CrAO starting on Jan. 12 (UT) 16:35. In the
enhanced Swift-XRT position (Evanset al., GCN 11556) we do not detect
optical afterglow (Xin et al., GCN 11554) up to R=20.6. The photometry is
based on the
USNO B1.0 star 1164-0563915 (21 59 45.42 +26 27 18.3) assuming R=15.64.
T0+ Filter, Exposure, mag.
(mid, d) (s)
0.52955 R 13x180 R >20.6
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