GCN Circular 15917
Subject
GRB 140304A: Mondy optical observations
Date
2014-03-04T15:02:59Z (10 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A.Volnova (IKI), A. Pozanenko (IKI), I. Korobtsev (ISTP), E. Klunko
(ISTP), M. Eselevich (ISTP), report on behalf of larger GRB follow-up
collaboration:
We observed the field of GRB 140304A (Evans et al., GCN 15915) with
AZT-33IK telescope of Mondy observatory starting on Mar. 04 (UT)
13:54:10, i.e. ~0.5 hour after burst trigger. In the first images of 60
s exposure we clearly detected afterglow of GRB 140304A reported by
Gorbovskoy et al. (GCN 15914) and Xu et al. (GCN 15916). Preliminary
photometry of the fading afterglow is following:
date UT start t-T0 Exp. Filter OT
(mid, days) (s)
2014-03-04 13:54:10 0.02406 6*60 R 20.29 �� 0.17
The photometry is based on reference stars SDSS-DR9, (R mag,
transformation by Lupton 2005):
N SDSS_id R(Lupton) err
J020233.12+332550.3 15.665 0.012
J020219.91+332738.5 14.785 0.012