{
  "bibcode": "2005GCN..4000....1G",
  "body": "D. Grupe (PSU), S. Barthelmy (GSFC), D. Burrows (PSU),\nN. Gehrels (GSFC), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD),\nD. Palmer (LANL), A. Parsons (GSFC), T. Sakamoto (GSFC/NRC)\n\nAfter analysis of the full data set for Swift-BAT trigger 155764\nat 19:42:13 UT on 18 Sep 2005 (Grupe et al, GCN 3999),\nwe have determined that this event is not due to a GRB or any\nother astrophysical source.  The trigger arose from a chance\ncoincidence between a rate increase due to noise and a\npositive fluctuation in the image.\n\nXRT observed the field of trigger 155764 for 2 orbits for a total\nof 4.2 ks. Ground-based analysis showed no source in the field.\nNo further observations are planned.\n\n[GCN OPS NOTE(18sep05): Per one of the author's request, the trigger number\nwas corrected in the second paragraph.]",
  "circularId": 4000,
  "createdOn": 1127094247000,
  "email": "krimm@milkyway.gsfc.nasa.gov",
  "subject": "Swift-BAT trigger 155764 is not a GRB",
  "submitter": "Hans Krimm at NASA-GSFC  <krimm@milkyway.gsfc.nasa.gov>"
}