[vsnet-grb-info 1759] Swift-BAT Trigger 145729 is not a GRB

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  3599
SUBJECT: Swift-BAT Trigger 145729 is not a GRB
DATE:    05/07/13 20:37:12 GMT
FROM:    Scott Barthelmy at NASA/GSFC  <Scott at lheamail.gsfc.nasa.gov>

S. Barthelmy (GSFC), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD),
D. Palmer (LANL), T. Sakamoto (GSFC),
on behalf of the Swift-BAT team:

At 08:50:21.82 UT, the Swift-BAT instrument triggered (trigger=145729).
After careful analysis of the full Malindi data set, this trigger
has been determined to not be due to a real GRB.  It is most likely
due to a particle shower event.

And to review the recent activity of BAT triggers and bursts:

TrigNum  Date    Time         Comment
145563   050712  12:05:37.98  Non-burst, retraction Notice issued
145581   050712  14:00:27.51  Burst, GCN 3573
145675   050713  04:29:02.39  Bright burst, GCN 3581
145729   050713  08:50:21.82  Non-burst, this Circular
145754   050713  12:07:17.62  Burst, GCN 3590
145767   050713  14:17:24.34  Non-burst, retraction Notice issued