TITLE: GCN CIRCULAR NUMBER: 19569 SUBJECT: GRB 160624A, Swift-BAT refined analysis DATE: 16/06/24 19:38:17 GMT FROM: Amy Lien at GSFC T. N. Ukwatta (LANL), S. D. Barthelmy (GSFC), J. R. Cummings (GSFC/UMBC), A. D'Ai (INAF-IASFPA), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU) (i.e. the Swift-BAT team): Using the data set from T-240 to T+581 sec from the recent telemetry downlink, we report further analysis of BAT GRB 160624A (trigger #701288) (D'Ai et al., GCN Circ. 19560). The BAT ground-calculated position is RA, Dec = 330.210, 29.667 deg which is RA(J2000) = 22h 00m 50.5s Dec(J2000) = +29d 40' 02.4" with an uncertainty of 2.6 arcmin, (radius, sys+stat, 90% containment). The partial coding was 100%. The mask-weighted light curve shows a single pulse that starts at ~T0, peaks at ~T+0.1 s, and ends at ~T+0.3. T90 (15-350 keV) is 0.2 +- 0.1 sec (estimated error including systematics). The time-averaged spectrum from T+0.0 to T+0.3 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 0.57 +- 0.45. The fluence in the 15-150 keV band is 4.0 +- 0.9 x 10^-8 erg/cm2. The 1-sec peak photon flux measured from T-0.29 sec in the 15-150 keV band is 0.5 +- 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/701288/BA/