{
  "bibcode": "2013GCN.14603....1D",
  "body": "P. D'Avanzo (INAF-OAB), A.Y. Lien (NASA-GSFC), P.A. Evans (U. Leicester)\nreport on behalf of the Swift-XRT team:\n\nWe have analysed 12.3 ks of XRT data for the Fermi-LAT-detected burst GRB\n130504C (Kocevski et al. GCn Circ 14574),  from 65.6 ks to 278.7 ks after\nthe  Fermi-LAT trigger. The data are entirely in Photon Counting (PC)\nmode.  The X-ray source reported by D'Avanzo et al. (GCN Circ. 14584,\n14588) displays a fading behaviour.\n\nThe overall light curve can be modelled with a power-law decay with a\ndecay index of alpha=1.39 (+0.32, -0.25).\n\nWe confirm it as the X-ray afterglow of GRB 130504C.\n\nThe results of the XRT-team automatic analysis are available at\nhttp://www.swift.ac.uk/xrt_products/00020267.",
  "circularId": 14603,
  "createdOn": 1368026023000,
  "email": "paolo.davanzo@brera.inaf.it",
  "subject": "GRB 130504C: Swift-XRT afterglow confirmation",
  "submitter": "Paolo D'Avanzo at INAF-OAB  <paolo.davanzo@brera.inaf.it>",
  "eventId": "GRB 130504C"
}