TITLE: GCN CIRCULAR NUMBER: 14951 SUBJECT: GRB 130627A, Swift-BAT refined analysis DATE: 13/06/28 23:48:10 GMT FROM: Amy Lien at GSFC G. Sato (ISAS), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), E. E. Fenimore (LANL), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), A. Y. Lien (NASA/GSFC/ORAU), C. B. Markwardt (GSFC), S. R. Oates (UCL-MSSL), 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-60 to T+243 sec from the recent telemetry downlink, we report further analysis of BAT GRB 130627A (trigger #559132) (Oates, et al., GCN Circ. 14933). The BAT ground-calculated position is RA, Dec = 184.415, -37.114 deg which is RA(J2000) = 12h 17m 39.7s Dec(J2000) = -37d 06' 51.8" with an uncertainty of 2.8 arcmin, (radius, sys+stat, 90% containment). The partial coding was 20%. The mask-weighted light curve shows a single peak starting at ~T-4 sec, peaking at ~T+2 sec, and ending at ~T+26. T90 (15-350 keV) is 30.8 +- 12.3 sec (estimated error including systematics). The time-averaged spectrum from T-5.2 to T+33.6 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.84 +- 0.32. The fluence in the 15-150 keV band is 9.1 +- 1.9 x 10^-07 erg/cm2. The 1-sec peak photon flux measured from T+1.88 sec in the 15-150 keV band is 1.8 +- 0.5 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/559132/BA/