GCN Circular 28871
Subject
GRB 201104B: continued TSHAO optical observation
Event
Date
2020-11-09T12:57:32Z (5 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
S. Belkin (IKI), A. Kusakin (FAP), N. Pankov (HSE), I. Reva (FAP), A.
Pozanenko (IKI) report on behalf of GRB-IKI-FuN:
We continued observations of the GRB 201104B (Sbarufatti et al., GCN
28825) with Zeiss-1000 1-m telescope of Tien Shan Astronomical
Observatory starting on Nov. 06 (UT) 15:04:58.
The optical afterglow (Marshall et al., GCN 28827; Vielfaure et al.,
GCN 28840; Oates et al., GCN 28851; Belkin et al., GCNs 28852, 28856;
Gupta et al., GCN 28860; Hosokawa et al., GCN 28870) at redshift z =
1.954 (Vielfaure et al., GCN 28840) is detected in stacked image in
R-filter. Preliminary photometry of the afterglow is following.
Date UT start t-T0 Filter Exp. OT Err. UL(3 sigma)
(mid, days) (s)
2020-11-06 15:04:58 1.92271 R 50*90 22.20 0.21 22.4
The photometry is based on nearby USNO-B1.0 stars.
USNO-B1.0_id R2
0979-0003163 17.51
0979-0003223 17.47