GCN Circular 28886
Subject
ZTF20acozryr/AT2020yxz (GRB 201103B): CrAO/ZTSh optical observations
Event
Date
2020-11-14T12:26:46Z (6 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
S. Belkin (IKI), A. Pozanenko (IKI), V. Rumyantsev (CrAO), N. Pankov
(HSE) report on behalf of GRB IKI FuN:
We continued observations of the ZTF20acozryr/AT2020yxz (Coughlin et
al., GCN 28841) with ZTSh 2.6m telescope of CrAO observatory starting
on Nov., 13 (UT) 22:58:04. We detect the optical transient (Coughlin et
al., GCN 28841; Xu et al., GCN 28846; Zhu et al., GCN 28854; Mao et
al., GCN 28861; Belkin et al., GCNs 28862, 28875, 28883; Mao et al.,
GCN 28863; Kumar et al., GCN 28876; SungHak et al., GCN 28880) at
redshift z = 1.105 (Xu et al., GCN 28847) associated with afterglow of
GRB 201103B (Ursi et al., GCN 28831; 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. Telescope
(mid, days) (s)
2020-11-13 22:58:04 10.21897 R 24*120 21.67 0.16 22.1 ZTSh
The photometry is based on the same stars used in GCNs 28862, 28875, 28883.