TITLE: GCN CIRCULAR NUMBER: 10424 SUBJECT: GRB 100213A: Swift-BAT refined analysis DATE: 10/02/15 14:25:12 GMT FROM: Scott Barthelmy at NASA/GSFC S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), D. Grupe (PSU), H. A. Krimm (GSFC/USRA), C. B. Markwardt (GSFC/UMD), D. M. Palmer (LANL), T. Sakamoto (GSFC/UMBC), J. Tueller (GSFC), T. N. Ukwatta (GWU) (i.e. the Swift-BAT team): Using the data set from T-61 to T+242 sec from telemetry downlinks, we report further analysis of BAT GRB 100213A (trigger #412217) (Grupe, et al., GCN Circ. 10411). The BAT ground-calculated position is RA, Dec = 349.379, 43.370 deg which is RA(J2000) = 23h 17m 31.0s Dec(J2000) = +43d 22' 13.1" with an uncertainty of 1.4 arcmin, (radius, sys+stat, 90% containment). The partial coding was 59%. The mask-weighted light curve shows four spikes between ~T-0.7 and ~T+2.5 sec plus a low level tail out to ~T+40 sec. T90 (15-350 keV) is 2.4 +- 0.4 sec (estimated error including systematics). The time-averaged spectrum from T-0.7 to T+2.2 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.34 +- 0.15. The fluence in the 15-150 keV band is 2.7 +- 0.3 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T+1.01 sec in the 15-150 keV band is 2.1 +- 0.2 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/412217/BA/