GCN Circular 16372
Subject
GRB 140521A: AAO optical upper limit
Date
2014-06-09T19:46:36Z (10 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Volnova (IKI), R. Inasaridze (AAO), O. Kvaratskhelia (AAO), V.
Ayvazian (AAO), Yu. Krugly (IA KhNU), I. Molotov (KIAM), A. Pozanenko
(IKI) report on behalf of larger GRB follow-up collaboration:
We observed second epoch of the field of the Swift GRB 140521A (Troja et
al., GCN 16311) with AS-32 (0.7m) telescope of Abastumani Observatory
starting on May, 22 (UT) 21:34:30. We obtained several unfiltered
frames with exposure of 120 s. In comparison with our first epoch
observation (Volnova et al., GCN 16317) we do not detect any variable
source within the BAT ground-calculated position (Barthelmy et al., GCN
16316).
A photometry is based on the same reference star used in first epoch
(see GCN 16311):
UT start t-T0 Filter Exp. Uplim
(mid, days) (s) (3 sigma)
2014-05-22 21:34:30 1.12809 None 38*120 21.5