{
  "bibcode": "2016GCN.19162....1G",
  "body": "S.L. Gibson (U. Leicester), J.P. Osborne (U. Leicester), K.L. Page (U.\nLeicester), P. D'Avanzo (INAF-OAB), V. D'Elia (ASDC), A. D'Ai\n(INAF-IASFPA), T.G.R. Roegiers (PSU), L.M. McCauley (PSU), J.A. Kennea\n(PSU) and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT\nteam:\n\nSwift-XRT has performed follow-up observations of the\nFermi/LAT-detected burst GRB 160310A (Vianello et al. GCN Circ. 19158),\ncollecting 3.0 ks of Photon Counting (PC) mode data between T0+40.3 ks\nand T0+46.7 ks. \n\nOne uncatalogued X-ray source has been detected inside or close to the\nFermi/LAT error region, it is below the RASS limit and shows no\ndefinitive signs of fading. Therefore, at the present time we cannot\nconfirm this as the afterglow. Details of this source are given below:\n\nSource 2:\n  RA (J2000.0):  98.8226  =  06:35:17.42\n  Dec (J2000.0): -7.2156  =  -07:12:56.1\n  Error: 5.1 arcsec (radius, 90% conf.)\n  Count-rate: (5.2 +/- 1.9)e-3 ct s^-1\n  Flux: (1.18 +/- 0.43)e-13 erg cm^-2 s^-1 (observed, 0.3-10 keV)\n\nAnother uncatalogued was also detected, however this was too far from\nthe GRB position to be the afterglow.\n\nThe results of the XRT-team automatic analysis of the XRT observations,\nincluding a position-specific upper limit calculator, are available at\nhttp://www.swift.ac.uk/ToO_GRBs/00020602.\n\nThis circular is an official product of the Swift-XRT team.",
  "circularId": 19162,
  "createdOn": 1457636319000,
  "email": "maselli@ifc.inaf.it",
  "subject": "GRB 160310A: Swift-XRT observations",
  "submitter": "Alessandro Maselli at INAF/IASF Palermo  <maselli@ifc.inaf.it>",
  "eventId": "GRB 160310A"
}