{
  "bibcode": "2016GCN.19305....1B",
  "body": "A.P. Beardmore (U. Leicester), P. D'Avanzo (INAF-OAB), V. D'Elia\n(ASDC), A. D'Ai (INAF-IASFPA), T.G.R. Roegiers (PSU), L.M. McCauley\n(PSU), J.A. Kennea (PSU), S.L. Gibson (U. Leicester) and P.A. Evans (U.\nLeicester) report on behalf of the Swift-XRT team:\n\nSwift-XRT has performed follow-up observations of the\nSwift/BAT-detected burst GRB 160409A, collecting 3.0 ks of Photon\nCounting (PC) mode data between T0+240.0 ks and T0+246.7 ks. \n\nNo uncatalogued X-ray sources have been detected inside or close to the\nSwift/BAT error region. The 3-sigma upper limit in the field ranges\nfrom ~0.004 to ~0.005 ct s^-1, corresponding to a 0.3-10 keV observed\nflux of 1.7e-13 to 2.1e-13 erg cm^-2 s^-1 (assuming a typical GRB\nspectrum).\n\nA previously-catalogued X-ray source has been detected inside or close\nto the Swift/BAT error region, however because it is a catalogued\nobject it is unlikely to be the afterglow.\n\nAn uncatalogued was detected, however this was too far from the GRB\nposition 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/00020604.\n\nThis circular is an official product of the Swift-XRT team.",
  "circularId": 19305,
  "createdOn": 1460489044000,
  "email": "slg44@leicester.ac.uk",
  "subject": "GRB 160409A: Swift-XRT observations",
  "submitter": "Sarah Gibson at U.of Leicester  <slg44@leicester.ac.uk>",
  "eventId": "GRB 160409A"
}