{
  "subject": "GRB 160625A: Swift-XRT observations",
  "eventId": "GRB 160625A",
  "bibcode": "2016GCN.19578....1B",
  "createdOn": 1466898663000,
  "circularId": 19578,
  "submitter": "Phil Evans at U of Leicester  <pae9@leicester.ac.uk>",
  "email": "pae9@leicester.ac.uk",
  "body": "D.N. Burrows (PSU), J.A. Kennea (PSU), S. Campana (INAF-OAB), G.\nCusumano (INAF-IASF PA), P.A. Evans (U. Leicester) and J.P. Osborne (U.\nLeicester) report on behalf of the Swift-XRT team:\n\nThe XRT began observing the field of GRB 160625A at 23:02:36.8 UT,\n1325.3 seconds after the BAT trigger. Using promptly downlinked data we\nfind an uncatalogued X-ray source located at RA, Dec 176.91418,\n-65.14362 which is equivalent to:\n   RA(J2000)  = 11h 47m 39.40s\n   Dec(J2000) = -65d 08' 37.0\"\nwith an uncertainty of 5.8 arcseconds (radius, 90% containment). This\nlocation is 112 arcseconds from the BAT onboard position, within the\nBAT error circle. This position may be improved as more data are\nreceived; the latest position is available at\nhttp://www.swift.ac.uk/sper.  We cannot determine whether the source is\nfading at the present time. No spectrum from the promptly downlinked\nevent data is yet available to determine the column density."
}