TITLE: GCN CIRCULAR NUMBER: 9680 SUBJECT: GRB 090715A: Swift-BAT refined analysis DATE: 09/07/16 13:24:23 GMT FROM: Scott Barthelmy at NASA/GSFC W. H. Baumgartner (GSFC/UMBC), S. D. Barthelmy (GSFC), J. R. Cummings (GSFC/UMBC), E. E. Fenimore (LANL), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), C. B. Markwardt (GSFC/UMD), D. M. Palmer (LANL), A. M. Parsons (GSFC), J. L. Racusin (PSU), T. Sakamoto (GSFC/UMBC), G. Sato (ISAS), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), T. N. Ukwatta (GWU) (i.e. the Swift-BAT team): Using the data set from T-239 to T+963 sec from recent telemetry downlinks, we report further analysis of BAT GRB 090715A (trigger #357498) (Racusin, et al., GCN Circ. 9666). The BAT ground-calculated position is RA, Dec = 152.102, 10.006 deg, which is RA(J2000) = 10h 08m 24.5s Dec(J2000) = +10d 00' 22.4" with an uncertainty of 2.4 arcmin, (radius, sys+stat, 90% containment). The partial coding was 22%. The mask-weighted light curve shows a single spike starting at ~T-0.1 sec, peaking at ~T+0.1 sec, and ending at ~T+0.7 sec. Following the intial spike, there is extended emission from ~T+20 to ~T+55 sec at a flux level ~50 times lower than the peak flux of the spike. T90 (15-350 keV) is 63 +- 18 sec (estimated error including systematics). The time-averaged spectrum from T-0.1 to T+67.8 sec is best fit by a simple power-law model. We note that this spectral analysis includes both the spike and the extended emission. Qualitatively, the spike is harder than the extended emission. The power law index of the time-averaged spectrum is 1.28 +- 0.42. The fluence in the 15-150 keV band is 9.8 +- 2.2 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T-0.11 sec in the 15-150 keV band is 3.9 +- 0.5 ph/cm2/sec. All the quoted errors are at the 90% confidence level. The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/357498/BA/