TITLE: GCN CIRCULAR NUMBER: 6782 SUBJECT: GRB 070913: Swift detection of a burst DATE: 07/09/13 00:46:08 GMT FROM: Scott Barthelmy at NASA/GSFC C. B. Markwardt (CRESST/GSFC/UMD), S. D. Barthelmy (GSFC), J. A. Kennea (PSU), H. A. Krimm (GSFC/USRA), K. L. Page (U Leicester), D. M. Palmer (LANL), M. Stamatikos (NASA/ORAU) and T. N. Ukwatta (GSFC/GWU) report on behalf of the Swift Team: At 00:36:43 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 070913 (trigger=290843). The BAT on-board calculated location is RA, Dec 228.832, -24.342, which is: RA(J2000) = 15h 15m 20s Dec(J2000) = -24d 20' 30" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows a single peak with a duration of about 5 sec. The peak count rate was ~1000 counts/sec (15-350 keV), at ~0 sec after the trigger. Because Swift is in the process of returning to normal operations, automatic slewing to GRBs is currently disabled. Therefore, there are no prompt XRT or UVOT observations of this burst. Burst Advocate for this burst is C. B. Markwardt (craigm 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.)