{
  "bibcode": "2015GCN.18243....1M",
  "body": "L.M. McCauley (PSU), J.A. Kennea (PSU), B. Sbarufatti (INAF-OAB/PSU),\nA.P. Beardmore (U. Leicester), J.P. Osborne (U. Leicester), V. D'Elia\n(ASDC), A. D'ai (INAF-IASFPA), A. Maselli  (INAF-IASFPA) and P.A. Evans\n(U. Leicester) report on behalf of the Swift-XRT team:\n\nSwift-XRT has conducted further observations of the field of the\nFermi/LAT-detected burst GRB 150902A (Arimoto et al. GCN Circ. 18228).\nThe observations now extend from T0+59.5 ks to T0+192.1 ks. \n\nOf the sources reported by McCauley et al. (GCN Circ. 18237), \"Source\n1\" is  believed to be the afterglow.  The position of this source is\nRA, Dec=214.9796, -69.3536 which is equivalent to:\n\nRA (J2000): 14:19:55.09\nDec(J2000): -69:21:13.1\n\nwith an uncertainty of 4.3 arcsec (radius, 90% confidence).  This\nposition is 73 arcsec from the Fermi/LAT position. \n\nThe light curve can be modelled with a power-law decay with a decay\nindex of alpha=1.0 (+0.7, -0.4).\n\nThe results of the XRT-team automatic analysis of the likely afterglow\nare at http://www.swift.ac.uk/ToO_GRBs/00020549/index_1.php.\nThe results of the full analysis of the XRT observations are available\nat http://www.swift.ac.uk/ToO_GRBs/00020549.\n\nThis circular is an official product of the Swift-XRT team.",
  "circularId": 18243,
  "createdOn": 1441462190000,
  "email": "boris.sbarufatti@brera.inaf.it",
  "subject": "GRB 150902A: Swift-XRT afterglow detection",
  "submitter": "Boris Sbarufatti at INAF-OAB/IASFPA  <boris.sbarufatti@brera.inaf.it>",
  "eventId": "GRB 150902A"
}