GRB 190420
GCN Circular 24060
Subject
Fermi TriggNum 576054086 (GRB 1904204.29) / MASTER OT J071404.52+550304.2: CrAO optical observations
Date
2019-04-08T14:04:12Z (7 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
S. Belkin (IKI), V. Rumyantsev (CrAO), A. Pozanenko (IKI), E. Mazaeva
(IKI), A. Volnova (IKI) report on behalf of larger GRB follow-up
collaboration:
We observed the field of the Fermi TriggNum 576054086 (Fermi GRB
1904204.29) with ZTSH 2.6m telescope of CrAO observatory starting on
Apr. 7 (UT) 19:01:27. At the position of the optical transient MASTER
OT J071404.52+550304 (Lipunov et al. GCN 24058) we detect the object.
Preliminary photometry of the object in R- filter is following
Date UT start t-T0 Filter Exp. OT err UL
(mid, days) (s)
2019-04-07 19:01:27 3.04834 R 30*120 22.0 0.15 23.4
The photometry is based on nearby USNO-B1.0 stars:
Ref.stars
USNO-B1.0_id R2
1450-0176813 16.94
1450-0176812 18.46
1450-0176771 16.0
At present time we cannot confirm variability of the object. The object
might be the afterglow or a host galaxy of the Fermi GRB 1904204.29
(TriggNum 576054086).