TITLE: GCN CIRCULAR NUMBER: 3803 SUBJECT: GRB050814: Refined analysis of the Swift-BAT burst DATE: 05/08/14 21:17:56 GMT FROM: Scott Barthelmy at NASA/GSFC J. Tueller (GSFC), C. Markwardt (GSFC/UMD), L. Barbier (GSFC), S. Barthelmy (GSFC), J. Cummings (GSFC/NRC), E. Fenimore (LANL), N. Gehrels (GSFC), D. Hinshaw (GSFC-SPSYS), D. Hullinger (GSFC/UMD), H. Krimm (GSFC/USRA), P. Meszaros (PSU), D. Palmer (LANL), A. Parsons (GSFC), T. Sakamoto (GSFC/NRC) on behalf of the Swift-BAT team: Using the full data set from the recent telemetry downlink, we report further analysis of Swift-BAT GRB 050814 (trigger #150314) (Retter, et al., GCN 3799). The ground-analysis position is RA,Dec 264.189,+46.354 (J2000) with an uncertainty of 3 arcmin (radius, 90%, stat+sys). The light curve shows a gradual increase in emission starting at T-15 sec with a peak at ~T+5 sec and then a longer gradual decline out to ~T+120 sec. T90 is 65 +40/-20 sec. Fitting a simple power law over the interval from T-1 to T+67 sec, the photon index is 1.80 +/- 0.17 with a fluence of 2.17 +/- 0.36 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+4.2 seconds is 1.0 +/- 0.3 ph/cm^2/sec (15-350 keV).