TITLE: GCN GRB OBSERVATION REPORT NUMBER: 5311 SUBJECT: GRB 060714: Swift detection of a burst with an UVOT optical afterglow DATE: 06/07/14 15:35:11 GMT FROM: Scott Barthelmy at NASA/GSFC H. A. Krimm (GSFC/USRA), S. D. Barthelmy (GSFC), D. N. Burrows (PSU), M.L. Conciatore (ASDC), J. R. Cummings (NASA/UMD), N. Gehrels (NASA/GSFC), C. Gronwall (PSU), C. Guidorzi (Univ Bicocca&INAF-OAB), J. A. Kennea (PSU), F. E. Marshall (NASA/GSFC), K. M. McLean (LANL/UTD), C. Pagani (PSU), K. L. Page (U Leicester), D. M. Palmer (LANL), M. Perri (ASDC), P. Romano (INAF-OAB), T. Sakamoto (NASA/ORAU), M. Stamatikos (NASA/ORAU) and L. Vetere (ASDC) report on behalf of the Swift Team: At 15:12:00 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 060714 (trigger=219101). Swift slewed immediately to the burst. The BAT on-board calculated location is 227.872, -6.546 (15h 11m 29s, -06d 32' 45") (J2000) with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows a single peak with a duration ~20 seconds. The peak count rate was ~500 counts/sec (15-350 keV). The XRT began observing the field at 15:13:39 UT, 99 seconds after the BAT trigger. XRT found a bright, fading, uncatalogued X-ray source located at RA(J2000) = 15h 11m 26.5s, Dec(J2000) = -06d 33' 57.5", with an estimated uncertainty of 4.7 arcseconds (90% confidence radius). This location is 83 arcseconds from the BAT on-board position, within the BAT error circle. The initial flux in the 2.5s image was 1.0e-08 erg/cm2/s (0.2-10 keV). UVOT took a finding chart exposure of 100 seconds with the White (160-650 nm) filter starting 109 seconds after the BAT trigger. There is a candidate afterglow in the rapidly available 2.7'x2.7' sub-image at (RA,DEC) (J2000) of (227.8602,-6.5662) or (15h11m26.45s,-06o33'58.3") with a 1-sigma error radius of about 0.5 arc sec. This position is 2.0 arc sec. from the center of the XRT error circle. The estimated magnitude is 19.2 with a 1-sigma error of about 0.5 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.08.