GCN Circular 23787
Subject
GRB 190114C: CHILESCOPE optical observations
Event
Date
2019-01-24T17:10:35Z (7 years ago)
From
Elena Mazaeva at IKI, Moscow <30.v@mail.ru>
E. Mazaeva (IKI), A. Pozanenko (IKI), A. Volnova (IKI), S. Belkin (IKI), M. Krugov (FAPHI) report on behalf of IKI-GRB-FuN:
We observed the field of GRB 190114C (Gropp et al., GCN 23688) with RC-1000 telescope of CHILESCOPE observatory. Observations started on Jan. 24 (UT) 01:11:25. We obtained several images in r'-filter with FWHM of 1.0 arcsec. We detected optical afterglow (Tyurina et al., GCN 23690; Lipunov et al. GCN 23693; Selsing et al. GCN 23695; Izzo et al. GCN 23699; Bolmer et al. GCN 23702; Castro-Tirado et al. GCN 23708; Kann et al. GCN 23710; Im et al. GCNs 23717, 23747, 23757; Siegel et al. GCN 23725; Mazaeva et al., GCNs 23727, 23741, 23746; D'Avanzo et al., GCNs 23729, 23754; Kim et al., GCNs 23732, 23734; Kumar et al., GCN 23742; Ragosta et al. GCN 23748; Watson et al. GCNs 23749, 23751; Bikmaev et al. GCN 23766).
Preliminary PSF photometry of a stacked image is following.
Date UT start t-T0 Filter Exp. OT Err. UL(3sigma)
��������������������������������������������(mid, days) (s)
2019-01-24 01:11:25 9.93326 r' 14*180 21.56 0.09 23.2
We detected a source that is located northwest of the center of the host galaxy (de Ugarte Postigo et al., GCN 23692), aperture photometry of the galaxy + OT is r'= 21.29 +/- 0.08.
The photometry is based on several nearby PanSTARRS stars used in (Mazaeva et al., GCN 23741).