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GCN Circular 9117

Subject
Swift-BAT Trigger 348720 is not a GRB
Date
2009-04-09T12:03:40Z (16 years ago)
From
Scott Barthelmy at NASA/GSFC <scott@lheamail.gsfc.nasa.gov>
S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), D. M. Palmer (LANL),
D. Burrows (PSU), D. Grupe (PSU), M. C. Stroh (PSU)
(for the Swift-BAT and -XRT teams):
 
Swift-BAT trigger 348720 is not a GRB.   Analysis of the full data set
from recent telemetry downlinks shows the trigger to be due to coincident
noise fluctuations in the rate and image domains.

Followup observations by the XRT found only a single, weak source in
the BAT error circle that is consistent in position with a DSS object.
The lack of any detected X-ray afterglow confirms that the trigger
was not from a GRB.
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