TITLE: GCN CIRCULAR NUMBER: 6907 SUBJECT: GRB 071013: Swift detection of a burst DATE: 07/10/13 12:49:52 GMT FROM: Scott Barthelmy at NASA/GSFC F. E. Marshall (NASA/GSFC), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), D. N. Burrows (PSU), G. Cusumano (INAF-IASFPA), N. Gehrels (NASA/GSFC), J. A. Kennea (PSU), V. La Parola (INAF-IASFPA), V. Mangano (INAF-IASFPA), C. B. Markwardt (CRESST/GSFC/UMD), P. T. O'Brien (U Leicester), K. L. Page (U Leicester), D. M. Palmer (LANL), P. Romano (Univ. Bicocca & INAF-OAB), G. Sato (GSFC/ISAS), B. Sbarufatti (INAF-IASFPA), T. N. Ukwatta (GSFC/GWU) and H. Ziaeepour (UCL-MSSL) report on behalf of the Swift Team: At 12:09:19 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 071013 (trigger=294120). Swift did not execute an immediate slew. The BAT on-board calculated location is RA, Dec 279.525, +33.857 which is RA(J2000) = 18h 38m 06s Dec(J2000) = +33d 51' 27" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows a peak ~40 sec duration. The peak count rate was ~800 counts/sec (15-350 keV), at ~2 sec after the trigger. There are no XRT or UVOT data products because auto-slewing to new bursts is disabled while in gyro-calibration mode. Burst Advocate for this burst is F. E. Marshall (marshall 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.)