[vsnet-grb-info 1807] Swift-BAT trigger 146731 is not a real GRB

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  3647
SUBJECT: Swift-BAT trigger 146731 is not a real GRB
DATE:    05/07/19 19:12:34 GMT
FROM:    Scott Barthelmy at NASA/GSFC  <Scott at lheamail.gsfc.nasa.gov>

S. Barthelmy (GSFC), J. Cummings (GSFC/NRC), J. Kennea (PSU),
H. Krimm (GSFC/USRA), D. Palmer (LANL), J. Racusin (PSU)
on behalf of the Swift-BAT/-XRT teams:

The Swift-BAT trigger (trigger=146731) at 13:58:52.85 UT on 19 July 2005
(reported in GCN 3645, S. Vaughan) is not due to a real GRB or any other
astrophysical source.  Further analysis using the full BAT data has shown
this to be 3 cosmic ray showers in the instrument within a 15 msec window.
In addition, XRT did not detect any point source inside the BAT error circle
in 2 orbits of data.