TITLE: GCN GRB OBSERVATION REPORT NUMBER: 5349 SUBJECT: GRB 060719: Refined analysis of the Swift-BAT burst DATE: 06/07/19 17:22:33 GMT FROM: Scott Barthelmy at NASA/GSFC T. Sakamoto (GSFC/ORAU), L. Barbier (GSFC), S. D. Barthelmy (GSFC), J. Cummings (GSFC/ORAU), E. Fenimore (LANL), N. Gehrels (GSFC), D. Hullinger (BYU-Idaho), H. Krimm (GSFC/USRA), M. Koss (GSFC/UMD), C. Markwardt (GSFC/UMD), D. Palmer (LANL), A. Parsons (GSFC), G. Sato (GSFC/ISAS), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC) on behalf of the Swift-BAT team: Using the data set from T-119 to T+183 sec from recent telemetry downlinks, we report further analysis of BAT GRB 060719 (trigger #220020) (Stamatikos, et al., GCN Circ. 5339). The BAT ground-calculated position is RA,Dec = 18.418, -48.383 deg {01h 13m 40.3s, -48d 22' 58.3"} (J2000) +- 1.3 arcmin, (radius, sys+stat, 90% containment). The partial coding was 70%. The mask-tagged lightcurve shows two peaks. The first is FRED-like and starts at T-1 and ends at T+5 sec. The second is more symmetric and starts at T+41 sec and ends at T+55 sec. T90 (15-350 keV) is 55 +- 5 sec (estimated error including systematics). The time-averaged spectrum from T-0.2 to T+84.6 is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 2.00 +- 0.11. The fluence in the 15-150 keV band is 1.6 +- 0.1 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+0.59 sec in the 15-150 keV band is 2.3 +- 0.2 ph/cm2/sec. All the quoted errors are at the 90% confidence level.