TITLE: GCN CIRCULAR NUMBER: 7071 SUBJECT: GRB 071112B, Swift-BAT partial refined analysis of the SHB DATE: 07/11/13 00:06:15 GMT FROM: Scott Barthelmy at NASA/GSFC E. Fenimore (LANL), S. D. Barthelmy (GSFC), J. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), D. Palmer (LANL), A. Parsons (GSFC), M. Perri (ASDC), T. Sakamoto (GSFC/UMBC), G. Sato (GSFC/ISAS), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), T. Ukwatta (GWU) (i.e. the Swift-BAT team): Using the data set from T-120 to T+182 sec from the recent telemetry downlink, we report further analysis of BAT GRB 071112 (trigger #296503) (Perri, et al., GCN Circ. 7058). The BAT ground-calculated position is RA, Dec = 260.213, -80.884 deg, which is RA(J2000) = 17h 20m 51.0s Dec(J2000) = -80d 53' 02" with an uncertainty of 2.2 arcmin, (radius, sys+stat, 90% containment). The partial coding was 78%. The mask-weighted light curve shows two separated narrow peaks. The first starts at T-0.7 sec and has a total width of ~64 msec. The second starts at T+0.0 sec, peaks at T+0.1 sec, and ends at 0.3 sec. T90 (15-350 keV) is 0.30 +- 0.05 sec (estimated error including systematics). The time-averaged spectrum from T-0.0 to T+0.3 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 0.69 +- 0.34. The fluence in the 15-150 keV band is 4.8 +- 0.9 x 10^-8 erg/cm2. The 1-sec peak photon flux measured from T-0.38 sec in the 15-150 keV band is 1.3 +- 0.3 ph/cm2/sec. All the quoted errors are at the 90% confidence level. The automated script processing has generated fluence and spectral numbers for the second peak only. Since there seems to be urgent need in the community, we are pushing this circular out the door quickly so that at least these partial (second peak only) values are available to the follow-up community. By eye, the first peak appears to have a fluence one third that of the second peak. Also by eye, there appears to be no extended emission for this SHB out to at least T+180 sec and to a flux level ~0.007 counts/cm2/sec.