GCN Circular 29174
Subject
GRB 201223A: AbAO optical observations
Event
Date
2020-12-24T21:31:45Z (5 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
N. Pankov (HSE, IKI), A. Pozanenko (IKI), S. Belkin (IKI), R. Ya.
Inasaridze (AbAO), V. R. Ayvazian (AbAO), G. V. Kapanadze (AbAO), A.
Volnova (IKI) report on behalf of IKI-GRB-FuN:
We observed the field of GRB 201223A (Gropp et al., GCN 29158; Wood et
al., GCN 29161) with AS-32 telescope of Abastumani observatory (AbAO) in
R-filter. The optical afterglow (Lipunov et al., GCN 29157; Gropp
et al., GCN 29158; Zhu et al., GCN 29159; Hu et al., GCN 29160;
Hosokawa et al., GCN 29164; Romanov et al., GCN 29165; Xin et al., GCN
29166; Belkin et al., GCN 29167; Kumar et al., GCN 29168; Xu et al., GCN
29169; Gupta et al., GCN 29173) is detected in stacked images.
Date UT start t-T0 Filter Exp. OT Err. UL(3sigma)
(mid, days) (s)
2020-12-23 19:39:59 0.0733 R 8*60 19.38 0.17 19.8
2020-12-23 21:19:22 0.1517 R 35*60 20.28 0.13 20.9
The photometry is based on nearby USNO-B1.0 stars.