{
  "bibcode": "2010GCN.11316....1B",
  "body": "S. Barthelmy (GSFC), J. Kennea (PSU), and R. Margutti (INAF-OAB)\nreport on behalf of the Swift team:\n\nUsing the full data set (T-64 to T+240 sec) from the recent downlink,\nrefined ground analysis shows that the Swift-BAT trigger 435520\n(Cummings, et al., Circ 11315) is due to a chance fluctuation\nin the image domain.  It is not a GRB, nor anything astrophysical.\n\nSwift-XRT obtained 1.5 ks of Photon Counting (PC) mode data, from T0+160 s\nto T0+1.7 ks.  No source is found in the BAT error circle, with a 3-sigma\nupper limit of 6.7 x 10-3  ct/sec; for a typical GRB, this would correspond\nto an upper limit on the observed 0.3-10 keV flux of 3.4 x 10-13 erg cm-2 s-1.",
  "circularId": 11316,
  "createdOn": 1286144093000,
  "email": "scott@lheamail.gsfc.nasa.gov",
  "subject": "Refined analysis shows Swift Trigger 435520 is not a GRB",
  "submitter": "Scott Barthelmy at NASA/GSFC  <scott@lheamail.gsfc.nasa.gov>"
}