TITLE: GCN GRB OBSERVATION REPORT NUMBER: 3908 SUBJECT: Retraction of Swift-BAT trigger #153355 DATE: 05/09/03 06:43:38 GMT FROM: Jay R. Cummings at NASA/GSFC/Swift J. Cummings (NASA/NRC), C. Markwardt (GSFC), D. Palmer (LANL) on behalf of the Swift team report: At Sat 03 Sep 05 05:35:44 UT, BAT detected a possible peak in an image and reported it as a transient (Trigger #153355). This trigger is a low-significance peak in the vicinity of, but not coincident with, a previously detected low-significance peak. Therefore it is unlikely to be an astrophysical source of any kind, but rather an chance image fluctuation.