GCN Circular 27162
Subject
GRB 200219С: Mondy and TSHAO optical observations
Event
Date
2020-02-21T10:54:35Z (5 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
I. Reva (FAPHI), A. Pozanenko (IKI), M. Krugov (FAPHI), with Zeiss-1000
1-m telescope of Tien Shan Astronomical Observatory
A. Pozanenko (IKI), S. Belkin (IKI), E. Klunko (ISTP), I. Reva (FAPHI),
M. Krugov (FAPHI), E. Mazaeva (IKI), A. Volnova (IKI) report on behalf
of IKI-GRB-FuN:
We observed the field of GRB 200219�� (The Fermi GBM team, GCN 27145;
Dirirsa et al., GCN 27151; Hamburg et al., GCN 27155) with AZT-33IK
1.5-m telescope of Sayan observatory (Mondy) starting on Feb. 20 (UT)
21:21:45 and with Zeiss-1000 1-m telescope of Tien Shan Astronomical
Observatory starting on Feb. 20 (UT) 23:17:45. Within enhanced XRT
position of XRT afterglow (Burrows et al., GCN 27157) we detected an
optical object in coordinates of (J2000) 17:30:02.275 +10:32:22.47 with
uncertainities of 0.3 arcsec in both coordinates. Coordinates are
consistent with possible host galaxy (Xu et al., GCN 27161) which is
presented in Pan-STARRS catalaog. Preliminary photometry of the object
is following.
Date UT start t-T0 Filter Exp. OT Err UL(3sigma) telesope
(mid, days) (s)
2020-02-20 21:21:45 0.90596 R 40*60 21.55 0.15 22.2 AZT-33IK
2020-02-20 23:17:45 0.99207 R 56*60 n/d n/d 21.3 Z-1000
Photometry is based on the USNO-B2.0 nearby stars.
USNO-B1.0 R2
1005-0285285 17.74
1005-0285301 19.23
1005-0285213 19.99
The object is somewhat brighter than that presented in Pan-STARRS DR1,
and we suggest this object is a candidate for the afterglow of GRB 200115A.