{
  "bibcode": "2017GCN.20442....1V",
  "body": "A. Volnova (IKI), E. Mazaeva (IKI), R. Inasaridze (AbAO), A. Moskvitin (SAO \nRAS), E. Klunko (ISTP), V. Rumyantsev (CrAO), I. Korobtsev (ISTP),   V. \nAyvazian  (AbAO),  O. Kvaratskhelia  (AbAO), G. Inasaridze (AbAO),  I. \nMolotov (KIAM), A. Pozanenko (IKI)    report on behalf of  larger GRB \nfollow-up collaboration:\n\nWe observed the field of GRB 161219B (Swift trigger 727541; D'Ai,GCN 20296) \nwith AZT-33IK (Mondy), ZTSh (CrAO), AS-32 (AbAO) and Zeiss-1000 (SAO RAS) \ntelescopes.  We obtained  unfiltered images (AbAO) and images in R-filter \n(other observatories). The optical source associated with the afterglow \n(D'Ai et al., GCN 20296; Kruehler et al., GCN 20299; Guidorzi et al., GCN \n20300; Martin-Carrillo et al., GCN 20305) and SN2016jca  (de Ugarte Postigo \net al., GCN 20342; Chen et al., GCN 20380) is clearly visible in all our \nobservations.\n\nPreliminary light curve of the afterglow and  SN2016jca  can be found at\nhttp://grb.rssi.ru/GRB161219B/GRB161219B_LC.png\nPhotometry is based on nearby USNO-B1.0 stars (R2) common for all images. \nLate time photometry is contaminated by  Pan-STARRS galaxy previously \nreported by Kruehler et al. (GCN 20299), and  also presented in USNO-B1.0. \nApparent maximum brightness of the SN2016jca was observed at about 11 days \nafter burst onset (R = 19.2 at 2016-12-30 (UT) 20:04:59) and actual SN peak \ncould be slighter later,  between 11 and 14 days after burst.",
  "circularId": 20442,
  "createdOn": 1484243850000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 161219B: afterglow and SN2016jca optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 161219B"
}