TITLE: GCN CIRCULAR NUMBER: 7894 SUBJECT: GRB 080623: Swift detection of a burst DATE: 08/06/23 10:43:00 GMT FROM: David Palmer at LANL T. N. Ukwatta (GSFC/GWU), S. D. Barthelmy (GSFC), A. P. Beardmore (U Leicester), P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC), O. Godet (U Leicester), S. T. Holland (CRESST/USRA/GSFC), S. D. Hunsberger (PSU), J. A. Kennea (PSU), A. Moretti (INAF-OAB), K. L. Page (U Leicester), D. M. Palmer (LANL), D. Perez (U Leicester), M. Perri (ASDC) and G. Stratta (ASDC) report on behalf of the Swift Team: At 10:25:28 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 080623 (trigger=315080). Swift did not immediately slew because of an Earth observing constraint. The BAT on-board calculated location is RA, Dec 237.660, -62.038, which is RA(J2000) = 15h 50m 38s Dec(J2000) = -62d 02' 16" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showes several overlapping peaks with a duration of about 25 sec. The peak count rate was ~2500 counts/sec (15-350 keV), at ~7 sec after the trigger. XRT and UVOT observations will begin when the source comes out of Earth constraint near T+21 minutes. 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.)