TITLE: GCN GRB OBSERVATION REPORT NUMBER: 3629 SUBJECT: GRB050716: Refined analysis of the Swift-BAT burst DATE: 05/07/16 18:44:56 GMT FROM: Scott Barthelmy at NASA/GSFC S. Barthelmy (GSFC), L. Barbier (GSFC), J. Cummings (GSFC/NRC), E. Fenimore (LANL), N. Gehrels (GSFC), D. Hullinger (GSFC/UMD), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), D. Palmer (LANL), A. Parsons (GSFC), T. Sakamoto (GSFC/NRC), J. Tueller (GSFC), M. Chester (PSU), L. Angelini (GSFC/JHU) on behalf of the Swift-BAT team: Using the full data set from the recent telemetry downlink, we report further analysis of Swift-BAT Trigger #146227 (E. Rol, et al., GCN 3623). The ground-analysis position is RA,Dec 338.607, 38.682 (J2000) with an uncertainty of 3 arcmin (radius, 90%, stat+sys). T90 is 69 +/-1 sec. The burst had a slow rise and slow decay with two broad peaks centered at T+12 and T+44 seconds. Fitting a cutoff power law over the full interval from T-14 to T+76 seconds, the photon index is 0.79 +/- 0.26, Epeak is 104 +29 -15 keV and the Norm at 1 keV is 0.34 +0.38 -.19 with a fluence of 8.3 +1.3 -0.6 X 10^-6 erg/cm^2 in the 15-350 keV band (90% c.l.). The peak flux in a 1-sec wide window starting at T+12.2 seconds is 2.23 +/- 0.41 ph/cm^2/sec (15-350 keV).