GCN Circular 19929
Subject
GRB 160917A: Mondy optical observations
Date
2016-09-17T21:11:04Z (8 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Volnova (IKI), A. Pozanenko (IKI), E. Klunko (ISTP), E. Mazaeva
(IKI), I. Korobtsev (ISTP) report on behalf of larger GRB follow-up
collaboration:
We observed the field of the GRB 160917A (Racusin et al. GCN 19926) with
AZT-33IK telescope of Sayan observatory (Mondy) starting on Sep., 17
(UT) 14:30:30. We obtained several images in R-filter. We detected the
optical source within enhanced XRT error circle (Evans et al., GCN
19927) in coordinates (J2000) 19 42 39.81 +46 24 12.1 with
uncertainities of 0.4 arcsec in both coordinates. Preliminary photometry
of the afterglow is following
Date UT start t-T0 Filter Exp. OT UL (3 sigma)
(mid, days) (s)
2016-09-17 14:30:30 0.14601 R 120*30 20.60 +/- 0.20 22.9
Photometry is based on nearby USNO-B1.0 stars
ID RA Dec R2
1 1363-0324591 19:42:38.95 +46:23:53.8 16.62
2 1364-0326339 19:42:40.68 +46:24:37.0 17.40
3 1363-0324630 19:42:42.78 +46:23:28.7 17.05
We suggest the source as optical afterglow of GRB 160917A.
The finding chart can be found at
http://grb.rssi.ru/GRB160917A/160917A_Mondy_fc.png