GCN Circular 19065
Subject
GRB 160223B: Khureltogot optical observations
Date
2016-02-24T01:31:17Z (9 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
E. Mazaeva (IKI), S. Schmalz (ISON), A. Volnova (IKI), N. Tungalag
(Research Center of Astronomy and Geophysics MAS), I. Molotov (KIAM),
A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:
We observed the field of INTEGRAL and Fermi GRB 160223B GRB 160223B (Gotz et
al. GCN 19059; von Kienlin et al., GCN 19061) with ORI-40 telescope of
Khureltogot observatory starting on Feb., 23 (UT) 12:34:31. Within 2.2
arcmin error circle of the GRB 160223B localization (Gotz et al., GCN
19059) we marginally detect two possible sources not presented in USNO-B1.0
catalog. Coordinates of the sources are
Source (1): (J2000) 6:20:05.53 +33:24:58.7
Source (2): (J2000) 6:20:03.89 +33:23:14.2
with uncertainties of 1 arcsec in both coordinates.
At this time we cannot confirm the sources are real or variable due to low
S/N and absence of a full dataset.
Preliminary photometry of the sources is following
Date UT start t-T0 Filter Exp. OT Err UL(3sigma) Source#
(mid, days) (s)
2016-02-23 12:34:31 0.14969 none 7200 18.7 0.35 18.9 (1)
2016-02-23 12:34:31 0.14969 none 7200 18.7 0.30 18.9 (2)
Photometry is based on nearby USNO-B1.0 stars, R2 magnitudes:
USNO-B1_id R2
1234-0146334 14.41
1234-0146221 14.55
1233-0156534 14.77
1234-0146470 13.48
1234-0146172 13.37