TITLE: GCN CIRCULAR NUMBER: 7910 SUBJECT: GRB 080701: Swift detection of a burst DATE: 08/07/01 10:37:05 GMT FROM: David Palmer at LANL M. C. Stroh (PSU), A. P. Beardmore (U Leicester), D. N. Burrows (PSU), P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC), C. Guidorzi (INAF-OAB), E. A. Hoversten (PSU), C. Pagani (PSU), K. L. Page (U Leicester), D. M. Palmer (LANL), D. Perez (U Leicester), P. Romano (INAF-IASFPA), T. Sakamoto (NASA/UMBC), R. L. C. Starling (U Leicester), T. N. Ukwatta (GSFC/GWU), L. Vetere (PSU) and H. Ziaeepour (UCL-MSSL) report on behalf of the Swift Team: At 10:13:37 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 080701 (trigger=315615). Swift did not immediately slew due to an Earth limb constraint. The BAT on-board calculated location is RA, Dec 45.837, +75.492 which is RA(J2000) = 03h 03m 21s Dec(J2000) = +75d 29' 30" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a smooth peak structure with a duration of ~15 sec. The peak count rate was ~2500 counts/sec (15-350 keV), at ~1 sec after the trigger. Swift was unable to slew to the source due to due to Earth limb constraints. X-ray telescope and UV/optical telescope observations of this region will become possible at T+50 minutes. Burst Advocate for this burst is M. C. Stroh (stroh AT astroh.org). 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.)