TITLE: GCN CIRCULAR NUMBER: 19240 SUBJECT: GRB 160327A: Swift-BAT refined analysis DATE: 16/03/28 14:30:02 GMT FROM: Tilan Ukwatta at LANL C. B. Markwardt (GSFC), S. D. Barthelmy (GSFC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), A. Y. Lien (GSFC/UMBC), D. M. Palmer (LANL), J. L. Racusin (NASA/GSFC) T. Sakamoto (AGU), M. Stamatikos (OSU), T. N. Ukwatta (LANL) (i.e. the Swift-BAT team): Using the data set from T-240 to T+962 sec from the recent telemetry downlink, we report further analysis of BAT GRB 160327A (trigger #680655) (Racusin, et al., GCN Circ. 19235). The BAT ground-calculated position is RA, Dec = 146.698, 54.018 deg which is RA(J2000) = 09h 46m 47.5s Dec(J2000) = +54d 01' 04.0" with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 82%. BAT light curve shows a single peak starting around T-10 sec, peaking around T+5 sec and ending around T+22 sec. T90 (15-350 keV) is 28 +- 9 sec (estimated error including systematics). The time-averaged spectrum from T-6.30 to T+42.80 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.84 +- 0.11. The fluence in the 15-150 keV band is 1.4 +- 0.1 x 10^-06 erg/cm2. The 1-sec peak photon flux measured from T+4.14 sec in the 15-150 keV band is 1.8 +- 0.2 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/680655/BA/