{
  "bibcode": "2006GCN..4676....1K",
  "body": "A. Kong (MIT)\n\nWe report a follow-up Swift XRT observation of the INTEGRAL detected\nburst GRB 060204A (Mereghetti et al. GCN 4654). The XRT observation\nbegan at 2006 Feb 5 00:08:01 UT, 11 hrs after the burst. The XRT\nobservation lasted for 5.2 ksec and we found no source within the\n2.5 arcmin INTEGRAL error circle. We place a 3 sigma upper limit on\nthe flux of the afterglow of 4.1e-14 erg cm^-2 s^-1 (0.2-10 keV)\nassuming a power-law with a photon index of 2 and a Galactic absorption\nof 1e21 cm^-2.\n\nThe only X-ray source in the XRT field is 1RXS J152756.5-393155.",
  "circularId": 4676,
  "createdOn": 1139153029000,
  "email": "akong@space.mit.edu",
  "subject": "GRB 060204A: Swift XRT upper limit",
  "submitter": "Albert Kong at MIT  <akong@space.mit.edu>",
  "eventId": "GRB 060204A"
}