GCN Circular 26889
Subject
GRB 200125A: AbAO optical upper limit
Event
Date
2020-01-26T18:25:59Z (6 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
S. Belkin (IKI), A. Pozanenko (IKI), R. Ya. Inasaridze (AbAO ), E.
Mazaeva (IKI), A. Volnova (IKI), V. R. Ayvazian (AbAO ), G.V.
Kapanadze (AbAO), I. Molotov (KIAM) report on behalf of larger IKI GRB
follow-up collaboration:
We observed GRB 200125A (Lien et al., GCN 26876) with AS-32 (0.7m)
telescope of Abastumani Observatory starting on Jan. 26 (UT) 01:32:27.
We obtained several 60 s exposures in R-filter. We do not detect any
source within enhanced Swift-XRT position (Beardmore et al., GCN 26878)
in the stacked image. In particular we do not detect counterpart
candidate (Watson et al., GCN 26882; Melandri et al., GCN 26887)
Photometry of the field is following
Date UT start t-T0 Filter Exp. OT Err. UL(3sigma)
(mid, days) (s)
2020-01-26 01:32:27 0.520 R 56*60 n/d n/d 21.2
Photometry is based on nearby USNO-B1.0 stars (R2 magnitude):
USNO-B1.0_id R2
0818-0339924 16.46
0818-0339917 16.94