{
  "format": "text/plain",
  "eventId": "GRB 250114A",
  "subject": "GRB 250114A: TRT optical observations",
  "submitter": "Dong Xu at NAOC/CAS <dxu@nao.cas.cn>",
  "createdOn": 1736843739191,
  "submittedHow": "web",
  "bibcode": "2025GCN.38929....1A",
  "body": "J. An (NAOC), S. Tinyanont, R. Anutarawiramkul, P. Butpan (NARIT), X. Liu, Z.P. Zhu, S.Y. Fu, S.Q. Jiang, D. Xu (NAOC) report on behalf of a large collaboration:\n\nWe observed the field of GRB 250114A detected by Swift (Klingler et al., GCN 38927), using the 0.7-m telescope of the Thai Robotic Telescope network (TRT), located at Cerro Tololo, Chile. Observations started at 07:46:08.50 UTC on 2025-01-14, i.e., 13 mins after the Swift trigger, and a series of R-band frames were obtained.\n\nThe optical afterglow by Swift/UVOT (Klingler et al., GCN 38927) is clearly detected in the stacked images. Its brightness is decaying and has r ~ 20.2 mag at a median time 14.5 mins after the Swift trigger, calibrated with PanSTARRS and not corrected for Galactic extinction.",
  "circularId": 38929
}