GCN Circular 26964
Subject
GRB 200131A: CDK700 optical observations
Date
2020-02-02T21:01:36Z (4 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Pozanenko (IKI), V. Kim (AFIF, Pulkovo Observatory), I. Reva (AFIF),
M. Krugov (AFIF), E. Mazaeva (IKI), A. Volnova (IKI) report on behalf
of larger GRB IKI FuN collaboration:
We observed the field of the GRB 200131A (Sbarufatti al., GCN 26953)
with CDK700 (0.7m) telescope of Assy-Turgen observatory starting on
Feb. 01 (UT) 14:58:49 in R-filter. We marginally detect the
optical afterglow (Sbarufatti al., GCN 26953; Lipunov al., GCN 26954;
Butler al., GCN 26957; Strausbaugh al., GCN 26959; Kuin al., GCN 26962).
Preliminary photometry of the afterglow is following.
Date UT start t-T0 Filter Exp. OT Err. UL(3sigma)
(mid, days) (s)
2019-02-01 14:58:49 0.76733 R 14*360 21.4 0.3 21.5
The photometry is based on nearby USNO-B1.0 stars (R2 magnitudes).