TITLE: GCN CIRCULAR NUMBER: 6708 SUBJECT: GRB 070805: Swift detection of a burst DATE: 07/08/05 20:08:02 GMT FROM: Scott Barthelmy at NASA/GSFC A. M. Parsons (GSFC), S. D. Barthelmy (GSFC), N. Gehrels (NASA/GSFC), J. A. Kennea (PSU), V. La Parola (INAF-IASFPA), C. B. Markwardt (CRESST/GSFC/UMD), D. M. Palmer (LANL), M. Stamatikos (NASA/ORAU), R. L. C. Starling (U Leicester), E. Troja (INAF-IASFPA), T. N. Ukwatta (GSFC/GWU), D. E. Vanden Berk (PSU), S. D. Vergani (DIAS-DCU) and H. Ziaeepour (UCL-MSSL) report on behalf of the Swift Team: At 19:55:45 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 070805 (trigger=287088). The BAT on-board calculated location is RA, Dec 245.043, -59.945 which is RA(J2000) = 16h 20m 10s Dec(J2000) = -59d 56' 40" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows two peaks, the first is ~5 sec in duration and the second peak is broader and weaker ending around T+40 sec. The peak count rate was ~500 counts/sec (15-350 keV), at ~2 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 or UVOT data products to analyze. The burst will come out of constraint at T+31 minutes. Burst Advocate for this burst is A. M. Parsons (parsons 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.)