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GCN Circular 28862

Subject
ZTF20acozryr/AT2020yxz (GRB 201103B): Assy optical observations
Date
2020-11-07T13:47:08Z (3 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
S. Belkin (IKI), M. Krugov (FAI), V. Kim (FAI, Pulkovo Observatory),  A. 
Pozanenko (IKI), N. Pankov (HSE) report on behalf of GRB-IKI-FuN:

We observed the ZTF20acozryr/AT2020yxz (Coughlin et al., GCN  28841) 
with AZT-20 telescope of Assy-Turgen observatory starting on  Nov. 06 
(UT) 19:10:28  in  r'-filter.  We detect the optical transient (Coughlin 
et al., GCN  28841; Coughlin et al., GCN  28841; Xu  et al., GCN 28846; 
Xu  et al., GCN 28854; Mao et al., GCN  28861; ) which can be afterglow 
of GRB 201103B (Svinkin et al., GCN 28844; Evans  et al., GCN 28858).

Preliminary photometry of the afterglow is following

Date       UT start  t-T0     Filter  Exp.    OT    Err.   UL (3sigma)
                      (mid, days)        (s)

2020-11-06 19:10:28  3.06508  r'(AB)  60*60   20.84 0.06   23.1

The photometry is based on the nearby stars of PanSTARRS-PS1.

RA DEC r
02:48:57.72094 +12:12:04.2202 16.6938
02:48:41.68064 +12:09:59.6523 17.0772
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