{
  "bibcode": "2005GCN..4006....1K",
  "body": "J. A. Kennea, D. N. Burrows, D. Grupe, P. Roming (PSU), J. Osborne (U. \nLeicester), S. T. Holland (GSFC/USRA) and N. Gehrels (GSFC) report on \nbehalf of the Swift team:\n\nAt September 20th 22:08 UT, Swift began a 10ks TOO observation of the \nIntegral discovered burst GRB050918 (GCN 4002). Analysis of ground \nprocessed data from Swift/XRT reveals a previously uncatalogued faint \nX-ray point source inside the 2.8 arcminute Integral error circle, at the \nfollowing coordinates:\n\nRA(J2000):   17:50:28.7,\nDec(J2000): -25:24:41.2.\n\nThe uncertainty on this position is estimated to be 7 arcseconds radius \n(90% containment). This position is 34 arcseconds from the center of the \nIntegral error circle given in GCN 4002.\n\nThere is no evidence of fading in this source, however as this observation \noccured more than 2 days after the burst this result is expected. Further \nobservations will be required to determine if this source is the afterglow \nof GRB050918.\n\nA UVOT V-band image shows no new source, with respect to the DSS, inside \nthe INTEGRAL 2.8 arcminute radius error circle.  The 5-sigma limiting \nmagnitude in a circular aperture with a radius of six arcseconds is \nV_lim=19.3.",
  "circularId": 4006,
  "createdOn": 1127307335000,
  "email": "kennea@astro.psu.edu",
  "subject": "GRB050918: Possible Swift/XRT detected afterglow",
  "submitter": "Jamie A. Kennea at PSU/Swift-XRT  <kennea@astro.psu.edu>",
  "eventId": "GRB 050918"
}