TITLE: GCN GRB OBSERVATION REPORT NUMBER: 3615 SUBJECT: GRB050714B: Refined analysis of the Swift-BAT burst DATE: 05/07/15 02:40:16 GMT FROM: Scott Barthelmy at NASA/GSFC J. Tueller (GSFC), S. Barthelmy, L. Barbier (GSFC), J. Cummings (GSFC/NRC), E. Fenimore (LANL), N. Gehrels (GSFC), D. Hullinger (GSFC/UMD), H. Krimm (GSFC/USRA), C. Markwardt (NASA GSFC/UMD), 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 Trigger #145994 (Levan, et al., GCN 3613). The ground-analysis position is RA,Dec 169.697,-15.535 (J2000). The event-by-event data yields a lightcurve with a broad bump starting at T+15 sec and ending at T+70 sec. The spectrum over the interval from T-19 to T+68 seconds is soft. The simple power law photon index is 2.6 +/- 0.3 with a fluence of 6.5 +/- 1.4 X 10^-7 erg/cm^2 in the 15-350 keV band (90% c.l.). The peak flux in a 1-sec wide window starting at T+55 seconds is 0.5 +/- 0.2 ph/cm^2/sec. Although we can not rule out a hard x-ray transient source, it is more likely a real GRB, albeit on the soft end of the distribution.