[vsnet-grb-info 21961] Fermi TriggNum 576054086 (GRB 1904204.29) / MASTER OT J071404.52+550304.2: CrAO optical observations
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Mon Apr 8 23:05:20 JST 2019
TITLE: GCN CIRCULAR
NUMBER: 24060
SUBJECT: Fermi TriggNum 576054086 (GRB 1904204.29) / MASTER OT J071404.52+550304.2: CrAO optical observations
DATE: 19/04/08 14:04:12 GMT
FROM: Alexei Pozanenko at IKI, Moscow <apozanen at 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).
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