GCN Circular 13609
Subject
GRB 120802A: optical observations
Event
Date
2012-08-07T23:37:03Z (13 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
L. Elenin (KIAM), A. Volnova (SAI MSU), I. Molotov (KIAM), A. Pozanenko
(IKI) report on behalf of larger GRB follow-up collaboration:
We observed the field of GRB 120802A (Holland et al., GCN 13555) with
0.45-m telescope ?f ISON-NM observatory starting on Aug. 02 (UT) 08:13:18
(Elenin et al., GCN 13556). We took several unfiltered images of 30 s and
60 s exposures starting on Aug. 02, (UT) 08:13:18. At the edge of the
enhanced by UVOT field astrometry XRT error circle
(http://www.swift.ac.uk/xrt_positions/529486) we marginally detect a source
in coordinates 02:59:22.35 +13:46:07.2 (uncertainty of about 0.3 arsces in
both coordinates). A preliminary photometry of co-added frames is based
on the USNO-B1.0 (R2) nearby stars is following:
T_start, T0+, Exposure, Object,
(UT) mid, d (s)
08:13:18 0.06905 6360 21.2+/-0.6
We suggest the source might be an optical afterglow of GRB 120802A, however
at that time we cannot confirm the fading origin of the source.