Swift observations of a new outburst of the SFXT IGR J17544-2619

The Swift Burst Alert Telescope (BAT) triggered on 2013 June 28 at 07 26 21 UT (subthreshold, image trigger=559221) on what appeared to be a noise spike (D'Elia et al., GCN Circ. 14946). Swift immediately slewed to the BAT position, and the narrow field instruments started observing about 131.7 s after the trigger. Subsequent XRT observations detected a new outburst in progress from Supergiant Fast X-ray Transient (SFXT) IGR J17544-2619, which was located over 6 arcminutes from the BAT on-board position, but within the XRT field of view.