GCN Circular 23722
Subject
GRB 190114B: optical afterglow observations in Mondy and Abastumani observatories
Date
2019-01-15T17:32:45Z (5 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Volnova (IKI), A. Pozanenko (IKI), E. Mazaeva (IKI), E. Klunko
(ISTP), S. Belkin (IKI), R. Ya. Inasaridze (AbAO), V.R. Ayvazian
(AbAO), G. V. Kapanadze (AbAO), report on behalf of IKI-FuN:
We observed the field of the GRB 190114B (Siegel et al., GCN 23686)
with AZT-33IK telescope of Sayan observatory (Mondy), and AS-32
(0.7m) telescope of Abastumani Observatory. The optical afterglow
(Fernandez-Garcia et al., GCN 23694; Pozanenko et al., GCN 23696;
Selsing et al., GCN 23713) is detected in stacked images. Preliminary
photometry is following.
Date UT start t-T0 Filter Exp. OT Err. Observatory
(mid, days) (s)
2019-01-14 20:28:30 0.10233 R 30*120 19.87 0.06 Mondy
2019-01-15 01:04:51 0.24212 R 18*60 20.40 0.25 AbAO
The photometry is based on nearby SDSS stars
SDSS id R_Lupton
J113927.36+185157.2 17.094 0.014
J113940.10+185315.3 17.015 0.015
J113939.20+185354.8 17.954 0.018
The photometry might be affected by a nearby galaxy (r'=20.534, z_ph =
0.32813+/-0.08585) at a distance of 5.6 arc seconds.