GCN Circular 17067
Subject
GRB 141109B: optical upper limits
Date
2014-11-13T00:53:15Z (9 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
E. Mazaeva (IKI), A. Stepura (UAFO, ISON), R. Inasaridze (AAO), B.
Abdulloev (Institute of Astrophysics), A. Matkin (UAFO, ISON), N.
Minikulov (Institute of Astrophysics), A. Volnova (IKI), Molotov (KIAM), A.
Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:
We observed the field of the Swift GRB 141109B (Melandri et al., GCN
17038) with following instruments: SANTEL-650 (0.65m) telescope of
UAFO/ISON-Ussuriysk Observatory, AZT-8 (0.7m) telescope of Gissar
observatory, and AS-32 (0.7m) telescope of Abastumani Observatory (AAO). In
the enhanced XRT error circle (Beardmore et al., GCN 17045) we do not
detect any source with upper limits listed below:
Date UT start t-T0 Filter Exp. UL(3sigma)
Observatory
(mid, days) (s)
2014-11-09 09:18:51 0.10220 clear 100*60 20.7 UAFO
2014-11-09 14:30:43 0.29425 R 40*60 19.9 Gissar
2014-11-09 15:26:30 0.38464 clear 71*120 22.0 AAO
The photometry is based on stars of USNO-B1.0 and assumed R magnitudes:
RA DEC R
222.429145 +73.085200 14.97
222.517839 +73.110348 15.54
222.193512 +73.123517 17.06
222.275356 +73.104562 17.46
222.463681 +73.158509 17.55