TITLE: GCN CIRCULAR NUMBER: 16652 SUBJECT: GRB 140730A, Swift-BAT refined analysis DATE: 14/08/01 19:12:39 GMT FROM: Amy Lien at GSFC W. H. Baumgartner (GSFC/UMBC), S. D. Barthelmy (GSFC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), A. Y. Lien (NASA/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team): Using the data set from T-240 to T+902 sec from the recent telemetry downlink, we report further analysis of BAT GRB 140730A (trigger #607742) (Markwardt, et al., GCN Circ. 16642). The BAT ground-calculated position is RA, Dec = 56.350, -66.580 deg which is RA(J2000) = 03h 45m 24.0s Dec(J2000) = -66d 34' 48.7" with an uncertainty of 2.1 arcmin, (radius, sys+stat, 90% containment). The partial coding was 100%. The mask-weighted light curve shows several overlapping pulses. The first major pulse starts at ~T-14s, peaks at ~T-13 s, and ends at ~T-4 s. The second major pulse starts at ~T+0 s, peaks at ~T+1s, and ends at ~T+5 s. The whole burst structure ends at ~T+41 s. T90 (15-350 keV) is 41.3 +- 3.7 sec (estimated error including systematics). The time-averaged spectrum from T-13.5 to T+29.6 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 2.50 +- 0.32. The fluence in the 15-150 keV band is 2.8 +- 0.5 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T+1.17 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/607742/BA/