TITLE: GCN CIRCULAR NUMBER: 14151 SUBJECT: Swift Trigger 547142: a probable Galactic source DATE: 13/01/28 06:51:28 GMT FROM: David Palmer at LANL J. R. Cummings (NASA/UMBC), H. A. Krimm (CRESST/GSFC/USRA), K. L. Page (U Leicester), D. M. Palmer (LANL), T. Sakamoto (AGU) and M. Stamatikos (OSU/NASA/GSFC) report on behalf of the Swift Team: At 06:16:29 UT, the Swift Burst Alert Telescope (BAT) triggered and located a source near the galactic center (trigger=547142). The BAT on-board calculated location is RA, Dec 268.413, -25.762 which is RA(J2000) = 17h 53m 39s Dec(J2000) = -25d 45' 41" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). As is usual for a long image trigger, the rapidly available BAT light curve shows no significant structure. Due to a Sun observing constraint, Swift cannot slew to the BAT position until 04:38 UT on 2013 February 04. There will thus be no XRT or UVOT data for this trigger before this time. The position of this source, 3.6 degrees from the Galactic center and 0.1 degrees from the Galactic plane, as well as its duration (>20 minutes in the discovery image) strongly implies that this is Galactic transient. We shall assign a name for this source after ground analysis produces a refined position. Burst Advocate for this burst is J. R. Cummings (jayc AT milkyway.gsfc.nasa.gov). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/too.html.)