{
  "bibcode": "2005GCN..3426....1K",
  "body": "J. A. Kennea, D. N. Burrows (PSU), B. Zhang (UNLV) and N. Gehrels\n(NASA/GSFC) report on behalf of the Swift XRT team:\n\nSwift perfomed a follow up observation of the X-ray afterglow candidate of \nGRB050504 repored in GCN 3359. The new observation began on 01:38:23UT on \n14th May 2005, and Swift-XRT collected 7 ks of photon counting mode data. \nAnalysis of the ground processed data on GRB050504 from the second epoch \nobservations reveal no detection of the source found in the first epoch. \nThe 90% confidence level upper limit is 7.9 x 10^-4 cts/s compared to a \nsource brightness in the first epoch of 3.5+/-0.7 x 10^-3 cts/s.\n\nWe therefore conclude that the X-ray source reported in GCN 3359 has \nfaded, and is most likely the X-ray afterglow of GRB050504.",
  "circularId": 3426,
  "createdOn": 1116265145000,
  "email": "kennea@astro.psu.edu",
  "subject": "GRB 050504: Swift XRT afterglow candidate has faded",
  "submitter": "Jamie A. Kennea at PSU/Swift-XRT  <kennea@astro.psu.edu>",
  "eventId": "GRB 050504"
}