TITLE: GCN GRB OBSERVATION REPORT NUMBER: 3428 SUBJECT: Swift-BAT trigger 122203 is not a real GRB DATE: 05/05/18 00:56:20 GMT FROM: Scott Barthelmy at NASA/GSFC S. Barthelmy (GSFC), C. Markwardt (GSFC/UMD), D. Palmer (LANL) on behalf of the Swift-BAT team: The Swift-BAT trigger (trigger=122203) at 23:09:20 UT on 17 May 2005 is not due to a real GRB or any other astrophysical source. At this early time in the analysis, we have only the limited data products that come down via the TDRSS link. What we can say is that the RA,Dec values given in the GCN Notices are wrong. And we believe the BAT lightcurve has data corruption problems. It should it also be noted that due to some of these irregularities in the data, the filtering within GCN was not complete, and a small fraction of the GCN clients did in fact receive some notices on this trigger (especially the BAT lightcurve notice).