TITLE: GCN CIRCULAR NUMBER: 10351 SUBJECT: GRB 100119A: Swift-BAT refined analysis DATE: 10/01/19 22:29:14 GMT FROM: Scott Barthelmy at NASA/GSFC D. M. Palmer (LANL), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), V. Mangano (INAF-IASFPA), C. B. Markwardt (GSFC/UMD), T. Sakamoto (GSFC/UMBC), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), T. N. Ukwatta (GWU) (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 100119A (trigger #383063) (Mangano, et al., GCN Circ. 10348). The BAT ground-calculated position is RA, Dec = 299.308, -53.149 deg which is RA(J2000) = 19h 57m 14.0s Dec(J2000) = -53d 08' 56.7" with an uncertainty of 1.3 arcmin, (radius, sys+stat, 90% containment). The partial coding was 7%. The mask-weighted light curve shows several overlapping peaks starting at ~T-30 sec, peaking at ~T+3 sec, and ending at ~T+30 sec. T90 (15-350 keV) is 23.8 +- 4 sec (estimated error including systematics). The time-averaged spectrum from T-15.8 to T+15.5 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.01 +- 0.06. The fluence in the 15-150 keV band is 1.4 +- 0.0 x 10^-5 erg/cm2. The 1-sec peak photon flux measured from T+2.12 sec in the 15-150 keV band is 7.7 +- 1.0 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/383063/BA/