{
  "bibcode": "2019GCN.23884....1X",
  "body": "D. Xu, B.Y. Yu (NAOC), J.H. Liu (XAO), Z.P. Zhu, B.J. Xi (NAOC), X. Gao \n(Urumqi No.1 Senior High School) report on behalf of a larger collaboration:\n\nWe observed the field of GRB 190211A (Marshall et al., GCN 23883) using \nthe robotic NEXT-0.6m telescope located at Nanshan, Xinjiang, China. \nObservations started at 16:56:38 UT on 2019-02-11, i.e., 114 s after the \nBAT trigger. A series of 40 s, 60 s, 90 s, and 300 s R-band exposures \nwere obtained and observations are ongoing.\n\nAn uncatalogued and fading optical source is detected at coordinates\n\nR.A. (J2000) = 13:06:38.47\nDec. (J2000) = +41:58:04.93\n\nwith an error of the radius ~ 0.3 arcsec, being consistent with the XRT \nposition (Marshall et al., GCN 23883). The source has m(R)~17.8 mag from \nour first 40s exposure. We thus conclude this source is the optical \nafterglow of the burst.",
  "circularId": 23884,
  "createdOn": 1549908056000,
  "email": "dxu@nao.cas.cn",
  "subject": "GRB 190211A: NEXT-0.6m optical afterglow detection",
  "submitter": "Dong Xu at NAOC/CAS  <dxu@nao.cas.cn>",
  "eventId": "GRB 190211A"
}