GCN Circular 29522
Subject
GRB 210212A: Mondy optical observations
Event
Date
2021-02-18T00:17:06Z (5 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
S. Belkin (IKI), A. Pozanenko (IKI), E. Klunko (ISTP), N. Pankov (HSE)
report on behalf of GRB IKI FuN:
We observed the field of GRB 210212A (Troja et al., GCN 29487) with
AZT-33IK telescope of Sayan observatory (Mondy) starting on 2021-02-12
(UT) 14:39:29, i.e. 0.45 days after GRB trigger and reasonable FWHM of
about 2.7". Within enhanced XRT position (Beardmore et al., GCN 29489)
we found an object. Preliminary photometry of the object in a combined
image is following
Date UT start t-T0 Filter Exp. OT Err. UL(3sigma)
(mid, days) (s)
2021-02-12 14:39:29 0.44527 R 27*120 22.20 0.28 22.4
The photometry is based on the nearby USNO-B1.0 stars
USNO-B1.0_id R2
0972-0060540 15.06
0972-0060545 15.99
The object could be an afterglow of the GRB 210212A which is not
separated from (possible host) galaxy (Heintz et al., GCN 29498;
Dichiara et al., GCN 29507).