TITLE: GCN GRB OBSERVATION REPORT NUMBER: 3576 SUBJECT: GRB 050712: Swift-BAT Refined Analysis DATE: 05/07/12 20:18:09 GMT FROM: Craig Markwardt at NASA/GSFC/UMD C. Markwardt (NASA GSFC/UMD), M. Ajello (MPE), S. Barthelmy, L. Barbier (GSFC), J. Cummings (GSFC/NRC), E. Fenimore (LANL), R. Fink, N. Gehrels (GSFC), D. Hullinger (GSFC/UMD), H. Krimm (GSFC/USRA), D. Palmer (LANL), A. Parsons (GSFC), T. Sakamoto (GSFC/NRC), G. Sato (ISAS), M. Suzuki (Saitama), J. Tueller (GSFC) on behalf of the Swift-BAT team: Using the full data set from the recent telemetry downlink, further analysis of Swift-BAT GRB050712 (Trigger #145881; Grupe et al., GCN Circ 3573) yields a refined position of RA, Dec 77.698, +64.931 {05h 10m 48s, +64d 55' 52"} (J2000) with an uncertainty of 3 arcmin (radius, 90% confidence, statistical+systematic). The burst duration (T90) was determined to be 48 +/- 2 seconds (15-350 keV) starting at T-7.8 seconds. The spectrum over the interval from T-11 to T+44 seconds can be fit with a power law with photon index 1.56 +/- 0.18 and yields a fluence of 1.8 X10^-6 erg/cm^2 in the 15-350 keV band. The peak flux in a 1-sec wide window starting at T+17.4 seconds is 0.6 +/- 0.2 ph/cm^2/sec. The light curve is a long smooth "bump" with weak, if any, structure.