GCN Circular 18051
J. R. Cummings (NASA/UMBC), K. L. Page (U Leicester), D. M. Palmer (LANL), J. L. Racusin (NASA/GSFC) and M. H. Siegel (PSU) report on behalf of the Swift Team: At 05:23:37 UT, the Swift Burst Alert Telescope (BAT) triggered and located a source consistent with the location of the known source IGR J00291+5934 (=V1037 Cas) (trigger=650140). Swift could not slew immediately to the burst due to an Earth limb constraint. The BAT on-board calculated location is RA, Dec 7.200, +59.565 which is RA(J2000) = 00h 28m 48s Dec(J2000) = +59d 33' 54" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). No light curve is immediately available for this image trigger. Although this is a marginal significance (6.11 sigma) image trigger, it is likely to be a true detection, based on the close match (2 arcminutes) to the source location and the fact that this source is often seen by BAT. To avoid confusion, we note that this is not GRB 150724A, which occurred shortly after this detection.