[vsnet-grb-info 6548] Swift-BAT trigger 322590 is not a GRB

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  8156
SUBJECT: Swift-BAT trigger 322590 is not a GRB
DATE:    08/08/28 18:39:17 GMT
FROM:    Scott Barthelmy at NASA/GSFC  <scott at 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.