TITLE: GCN CIRCULAR NUMBER: 12955 SUBJECT: GRB 120215A: Swift-BAT refined analysis DATE: 12/02/15 05:06:22 GMT FROM: Scott Barthelmy at NASA/GSFC S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), E. A. Hoversten (PSU), H. A. Krimm (GSFC/USRA), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (GSFC/UMBC), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team): Using the data set from T-60 to T+243 sec from the recent telemetry downlink, we report further analysis of BAT GRB 120215A (trigger #515015) (Hoversten, et al., GCN Circ. 12954). The BAT ground-calculated position is RA, Dec = 30.057, 8.790 deg, which is RA(J2000) = 02h 00m 13.7s Dec(J2000) = +08d 47' 25.4" with an uncertainty of 2.3 arcmin, (radius, sys+stat, 90% containment). The partial coding was 83%. The mask-weighted light curve shows 2 or 3 overlapping peaks starting at ~T-2 sec, peaking at ~T+4 sec, and ending at ~T+35 sec. T90 (15-350 keV) is 26.5 +- 8.9 sec (estimated error including systematics). The time-averaged spectrum from T-0.36 to T+29.27 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.62 +- 0.22. The fluence in the 15-150 keV band is 4.0 +- 0.6 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T+4.87 sec in the 15-150 keV band is 0.6 +- 0.1 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/515015/BA/