GCN Circular 3786
S. Barthelmy (GSFC), L. Barbier (GSFC), C. Markwardt (GSFC-UMD), D. Palmer (LANL) on behalf of the Swift-BAT team: The Swift-BAT trigger (trigger=150131) at 04:40:48 UT on 13 Aug 2005 is not due to a GRB. This was a long image trigger (16 min) which had a s/c slew during the position calculation phase of the on-board processing, and therefore used incorrect aspect information. The initial series of GCN Notices were not distributed to the GCN client list, because this incorrect aspect solution was recognized by the GCN filtering code. However, the s/c executed a delayed slew to this position. As as part of the slew process, the s/c issued a SC_SLEW Notice which was not blocked by the GCN filtering code, because the neccessary solution status information is not available for delayed slews. There were also the usual set of XRT and UVOT notices. Hence the need for this retraction circular. This retraction is for trigger 150131. It should not be confused with trigger 150139 which happened a few minutes ago.