TITLE: GCN CIRCULAR NUMBER: 11347 SUBJECT: GRB 101017A: Swift-BAT refined analysis DATE: 10/10/17 16:32:05 GMT FROM: Craig Markwardt at NASA/GSFC/UMD D. M. Palmer (LANL), 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), C. B. Markwardt (GSFC), A. M. Parsons (GSFC), T. Sakamoto (GSFC/UMBC), G. Sato (ISAS), M. H. Siegel (PSU), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (GWU) (i.e. the Swift-BAT team): Using the data set from T-60 to T+240 sec from the recent telemetry downlink, we report further analysis of BAT GRB 101017A (trigger #436429) (Siegel, et al., GCN Circ. 11345). The BAT ground-calculated position is RA, Dec = 291.377, -35.141 deg which is RA(J2000) = 19h 25m 30.5s Dec(J2000) = -35d 08' 25.9" with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 43%. The mask-weighted light curve resembles an overall FRED-like profile, starting at T-5 sec, peaking at T+2 sec, but with multiple shorter spikes superimposed. An extended tail is detectable out to at least T+160 sec. T90 (15-350 keV) is 70.0 +- 3.0 sec (estimated error including systematics). The time-averaged spectrum from T-5.5 to T+111 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.45 +- 0.03. The fluence in the 15-150 keV band is 1.8 +- 0.1 x 10^-5 erg/cm2. The 1-sec peak photon flux measured from T+2.58 sec in the 15-150 keV band is 9.4 +- 0.4 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/436429/BA/