TITLE: GCN CIRCULAR NUMBER: 7098 SUBJECT: GRB 071117: Swift detection of a bright burst DATE: 07/11/17 15:02:30 GMT FROM: David Palmer at LANL T. N. Ukwatta (GSFC/GWU), W. H. Baumgartner (GSFC/UMBC), D. N. Burrows (PSU), J. R. Cummings (NASA/UMBC), G. Cusumano (INAF-IASFPA), N. Gehrels (NASA/GSFC), C. Guidorzi (Univ Bicocca&INAF-OAB), S. T. Holland (CRESST/USRA/GSFC), F. E. Marshall (NASA/GSFC), P. T. O'Brien (U Leicester), D. M. Palmer (LANL), P. Romano (Univ. Bicocca & INAF-OAB) and D. E. Vanden Berk (PSU) report on behalf of the Swift Team: At 14:50:06 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 071117 (trigger=296805). Swift did not slew immediately to the burst due to an Earth constraint. The BAT on-board calculated location is RA, Dec 335.020, -63.441 which is RA(J2000) = 22h 20m 05s Dec(J2000) = -63d 26' 27" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a single FRED peak with a duration of about 5 sec. The peak count rate was ~16000 counts/sec (15-350 keV), at ~0 sec after the trigger. Because of an Earth limb constraint, the spacecraft did not slew promptly to the BAT position, and so there are no immediate XRT data products to analyze. NFI observations are expected at T+43 minutes, when it comes out of constraint. Burst Advocate for this burst is T. N. Ukwatta (tilan.ukwatta AT gmail.com). 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.)