{
  "bibcode": "2015GCN.18323....1X",
  "body": "D. Xu (NAOC/CAS), A. de Ugarte Postigo (IAA-CSIC, DARK/NBI), N. R.\nTanvir (Univ. Leicester), D. Malesani (DARK/NBI), T. Kruehler (MPE),\nP. Jakobsson (Univ. Iceland), S. Schulze (PUC, MAS), V. D'Elia\n(ASI/ASDC and INAF-OAR), K. Karhunen (Turku Univ.), report on behalf\nof a larger collaboration:\n\nWe observed the field of GRB 150915A (D'Elia et al., GCN 18315) with\nthe Nordic Optical Telescope equipped with the ALFOSC camera. Two\nobservations composed each by 3x300 s exposures in R-band were taken\nwith the mean times of 0.80 and 3.05 hr after the GRB trigger.\n\nThe source detected by GROND and reported by Yates et al. (GCN 18317)\nis clearly visible in our images at both epochs, with a magnitude of\nR(Vega) = 22.52 +- 0.09 on our first epoch (assuming R = 16.72 for the\nstar at RA = 21:18:34.76, Dec = -34:53:44.9).\n\nInterestingly, the object is found to brighten between the two epochs\nby 0.28 +- 0.11 mag - a behavior not common, though not unprecedented.",
  "circularId": 18323,
  "createdOn": 1442445946000,
  "email": "dong.dark@gmail.com",
  "subject": "GRB 150915A: NOT observations of a brightening afterglow",
  "submitter": "Dong Xu at NAOC/CAS  <dong.dark@gmail.com>",
  "eventId": "GRB 150915A"
}