{
  "bibcode": "2019GCN.25659....1Y",
  "body": "B.Y. Yu, D. Xu, Z.P. Zhu, T.M. Zhang, X. Zhou, H.J. Wang, C.Z. Cui, D.W. \nFan, Y.F. Xu (NAOC), X. Gao (Urumqi No.1 Senior High School), Z.B. Zhang \n(XJTS), S. Yang (Stockholm U.), H.B. Zhao, B. Li (PMO), J.Z. Liu, H.B. \nNiu (XAO), J.R. Mao,\nJ.M. Bai (YNAO), report on behalf of the GWFUNC collaboration:\n\nWe observed the optical transient AT2019pjv, a candidate of the optical \ncounterpart of LIGO/Virgo S2019091ap (MASTER, Lipunov et al. GCN #25649; \nGOTO, Ackley et al., GCN #25654), using the Half Meter Telescope (HMT) \nlocated at Dabancheng, Xinjiang, China. Observations started at 14:31:01 \nUT on 2019-09-04, and 5x150 s unfiltered frames were obtained.\n\nThe OT is clearly detected in each exposure, and we got m(r) = 18.00 +/- \n0.05 mag in the stacked image, calibrated with nearby PanSTARRS field.\n\nIn comparison with previous MASTER and GOTO measurements, the OT has \nbeen rising since its detection on Sep 2. Such behaviour is much more \nconsistent with a young supernova than an optical afterglow of a short \nGRB or a kilonova.",
  "circularId": 25659,
  "createdOn": 1567615986000,
  "email": "dxu@nao.cas.cn",
  "subject": "LIGO/Virgo S190901ap: Dabancheng-0.5m optical observations of AT2019pjv",
  "submitter": "Dong Xu at NAOC/CAS  <dxu@nao.cas.cn>",
  "eventId": "LIGO/Virgo S190901ap"
}