GCN Circular 16036
Subject
GRB 140320C: Mondy optical observations and afterglow confirmation
Date
2014-03-25T12:03:24Z (10 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A.Volnova (IKI), E. Klunko (ISTP), I. Korobtsev (ISTP), M. Eselevich
(ISTP), A. Pozanenko (IKI) report on behalf of larger GRB follow-up
collaboration:
We observed the field of GRB 140320C (Mereghetti et al., GCN 16007)
with AZT-33IK telescope of Mondy observatory starting on Mar. 20 (UT)
15:12:44 and Mar. 23 (UT) 15:37:46. Several images of 120 s exposure in
R-filter ere obtained in both epochs. After receiving all data sets we
refined our measurements of the optical source N3 reported early as one
of a possible afterglow candidate (Volnova et al., GCN 16012). Enhanced
position of the source is (J2000) 08 57 34.40 +71 11 54.7 (uncertainty
of 0.35" is each coordinate) is within XRT error circle and apart 1.1"
of the center of XRT localization (Pagani et al., GCN 16017). A
photometry of the source:
date UT start t-T0 Exp. Filter OT err
(mid, days) (s)
2014-03-20 15:12:44 0.08918 1560 R 22.63 0.24
2014-03-20 15:38:46 0.12147 3840 R 23.14 0.28
2014-03-23 15:37:46 3.13782 6960 R 23.5 (3 sigma upper limit)
is based on two USNO-B1.0 stars (R2 mags)
N Id RA Dec. R
1 1612-0081687 08:57:32.78 +71:12:43.9 18.9
3 1611-0081293 08:57:55.56 +71:10:05.6 18.8
Based on our photometry we confirm the source N3 (Volnova et al., GCN
16012) is the afterglow of GRB 140320C.
Finding chart can be found at
http://grb.rssi.ru/GRB140320C/140320C_AZT33IK_fc.png
