GCN Circular 8156
Subject
Swift-BAT trigger 322590 is not a GRB
Date
2008-08-28T18:39:17Z (18 years ago)
From
Scott Barthelmy at NASA/GSFC <scott@lheamail.gsfc.nasa.gov>
S. D. Barthelmy (GSFC), W. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester),
J. Cummings (GSFC/UMBC), P. A. Evans (U Leicester), N. Gehrels (GSFC),
J. Kennea (PSU), C. B. Markwardt (GSFC/UMD), P. T. O'Brien (U Leicester)
(on behalf of the Swift team):
Using the BAT data set from T-119 to T+183 sec from the recent
telemetry downlink for trigger 322590 at 08:15:09 UT (GCN 8153),
we conclude the likelihood that this trigger is a real GRB is very low.
The automated ground processing of the BAT data yields a very weak peak
in the image domain (5.9 sigma).
And 5 ksec of XRT data (the first 4 orbits) does not show any source.
The UVOT candidate mentioned in Circ 5183 is not an afterglow
and is consistant with the known source 2MASS J21334565+4201499.