{
  "bibcode": "2019GCN.23948....1Z",
  "body": "Z.P. Zhu, D. Xu, B.Y. Yu (NAOC) report on behalf of larger collaboration:\n\nWe observed the field of GRB 190311A (Troja et al., GCN 23946) using the \nrobotic NEXT-0.6m telescope located at Nanshan, Xinjiang, China. \nObservations started at 14:25:14 UT on 2019-03-11, i.e., 101 sec after \nthe BAT trigger. A series of 40 s, 60 s , 90 s, 300 s R-band frames were \nobtained, and photometry is still ongoing.\n\nAn uncatalogued optical source is detected at coordinates\n\nR.A. (J2000) = 14:08:15.71\nDec. (J2000) = +53:30:01.7\n\nwith an uncertainty radius ~0.3 arcsec, being consistent with Swift/UVOT \nposition  (Troja et al., GCN 23946). The source has m(R) ~ 19.7 mag at \n413 s post-burst, and is fading. We conclude that the source is the \noptical afterglow of the burst.",
  "circularId": 23948,
  "createdOn": 1552319436000,
  "email": "dxu@nao.cas.cn",
  "subject": "GRB 190311A: NEXT-0.6m optical afterglow detection",
  "submitter": "Dong Xu at NAOC/CAS  <dxu@nao.cas.cn>",
  "eventId": "GRB 190311A"
}