TITLE: GCN CIRCULAR NUMBER: 16354 SUBJECT: GRB 140606A: Swift-BAT refined analysis DATE: 14/06/06 18:33:36 GMT FROM: Scott Barthelmy at NASA/GSFC J. R. Cummings (GSFC/UMBC), S. D. Barthelmy (GSFC), W. H. Baumgartner (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), M. C. Stroh (PSU), J. Tueller (GSFC), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team): Using the data set from T-240 to T+962 sec from recent telemetry downlinks, we report further analysis of BAT GRB 140606A (trigger #600951) (Stroh, et al., GCN Circ. 16353). The BAT ground-calculated position is RA, Dec = 201.799, 37.599 deg, which is RA(J2000) = 13h 27m 11.7s Dec(J2000) = +37d 35' 56.5" with an uncertainty of 2.4 arcmin, (radius, sys+stat, 90% containment). The partial coding was 86%. The mask-weighted light curve shows a single spike starting at ~T+0.0, peaking at ~T+0.1, and ending at ~T+0.3 sec. T90 (15-350 keV) is 0.34 +- 0.09 sec (estimated error including systematics). The time-averaged spectrum from T-0.04 to T+0.35 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 0.53 +- 0.36. The fluence in the 15-150 keV band is 5.1 +- 1.0 x 10^-8 erg/cm2. The 1-sec peak photon flux measured from T-0.34 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/600951/BA/