TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  3904
SUBJECT: Swift Trigger #152652 is not a GRB 
DATE:    05/08/30 04:48:08 GMT
FROM:    David Palmer at LANL  <dmpalmer@mac.com>

V. Mangano (INAF-IASF), N. Gehrels (GSFC),  C. Markwardt (GSFC),
D. Morris (PSU),  D. Palmer (LANL), A. Parsons (GSFC),
T. Sakamoto (GSFC),
on behalf of the Swift team report:


At 04:08:48, BAT detected a source that was not in its on-board catalog
and reported it as a GRB (Trigger #152652). However, comparison to the
SIMBAD database finds a previously-known INTEGRAL gamma-ray source,
IGR J16479-4514, at a distance of 2.1 arcmin from the reported location,
which is within the BAT error circle.

Therefore we believe that this trigger was due to the known Integral
source, and not a GRB.