GCN Circular 19219
Subject
GRB 160321A: AbAO optical observations
Date
2016-03-22T20:25:03Z (9 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
E. Mazaeva (IKI), A. Volnova
(IKI), R. Inasaridze (AbAO), V. Ayvazian (AbAO), I. Molotov (KIAM), A.
Pozanenko (IKI) report on behalf of larger
GRB follow-up collaboration:
We observed the field of Swift GRB 160321A (Stamatikos et al., GCN
19211) with AS-32 (0.7m) telescope of Abastumani Observatory starting on
Mar. 21 (UT) 16:26:45. We obtained several unfiltered images of the
field. We do not detect any source within enhanced XRT error circle
(Beardmore et al., GCN 19213) down to 21.9m. A probable source (S/N = 2)
detected 3.5 arcsec South from the center of XRT error circle (Beardmore
et al., GCN 19213) in coordinates (J2000) 06:37:40.74 +05:44:48.2 +/-
0.5 arcsec in both coordinates.
Preliminary photometry of the field is following
Date UT start t-T0 Filter Exp. UL (3 sigma)
(mid, days) (s)
2016-03-21 16:26:45 0.06839 none 41*120 21.9
Photometry is based on nearby USNO-B1.0 stars
USNO-B1_id R2
0956-0104166 16.23
0957-0105913 15.38
0957-0106394 14.58
0956-0104566 15.41