GCN Circular 20442
Subject
GRB 161219B: afterglow and SN2016jca optical observations
Event
Date
2017-01-12T17:57:30Z (9 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Volnova (IKI), E. Mazaeva (IKI), R. Inasaridze (AbAO), A. Moskvitin (SAO
RAS), E. Klunko (ISTP), V. Rumyantsev (CrAO), I. Korobtsev (ISTP), V.
Ayvazian (AbAO), O. Kvaratskhelia (AbAO), G. Inasaridze (AbAO), I.
Molotov (KIAM), A. Pozanenko (IKI) report on behalf of larger GRB
follow-up collaboration:
We observed the field of GRB 161219B (Swift trigger 727541; D'Ai,GCN 20296)
with AZT-33IK (Mondy), ZTSh (CrAO), AS-32 (AbAO) and Zeiss-1000 (SAO RAS)
telescopes. We obtained unfiltered images (AbAO) and images in R-filter
(other observatories). The optical source associated with the afterglow
(D'Ai et al., GCN 20296; Kruehler et al., GCN 20299; Guidorzi et al., GCN
20300; Martin-Carrillo et al., GCN 20305) and SN2016jca (de Ugarte Postigo
et al., GCN 20342; Chen et al., GCN 20380) is clearly visible in all our
observations.
Preliminary light curve of the afterglow and SN2016jca can be found at
http://grb.rssi.ru/GRB161219B/GRB161219B_LC.png
Photometry is based on nearby USNO-B1.0 stars (R2) common for all images.
Late time photometry is contaminated by Pan-STARRS galaxy previously
reported by Kruehler et al. (GCN 20299), and also presented in USNO-B1.0.
Apparent maximum brightness of the SN2016jca was observed at about 11 days
after burst onset (R = 19.2 at 2016-12-30 (UT) 20:04:59) and actual SN peak
could be slighter later, between 11 and 14 days after burst.