TITLE: GCN CIRCULAR NUMBER: 15232 SUBJECT: GRB 130919A: Swift detection of a burst DATE: 13/09/19 11:18:50 GMT FROM: Hans Krimm at NASA-GSFC H. A. Krimm (CRESST/GSFC/USRA), A. A. Breeveld (UCL-MSSL), D. N. Burrows (PSU), P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC), J. A. Kennea (PSU), C. B. Markwardt (NASA/GSFC), A. Melandri (INAF-OAB), K. L. Page (U Leicester), B. Sbarufatti (INAF-OAB/PSU), M. H. Siegel (PSU) and T. N. Ukwatta (MSU) report on behalf of the Swift Team: At 11:07:24 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 130919A (trigger=571271). The BAT on-board calculated location is RA, Dec 207.288, -10.355 which is RA(J2000) = 13h 49m 09s Dec(J2000) = -10d 21' 19" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a broad peak of at least 60 seconds duration. This was an image trigger, so the currently available light curve does not show significant structure. Due to a Sun observing constraint, Swift cannot slew to the BAT position until 23:23 UT on 2013 December 7. There will thus be no XRT or UVOT data for this trigger before this time. Burst Advocate for this burst is H. A. Krimm (krimm 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.)