{
  "bibcode": "2017GCN.20443....1L",
  "body": "A. Y. Lien (GSFC/UMBC), S. D. Barthelmy (GSFC),\nJ. R. Cummings (CPI), N. Gehrels (GSFC),\nH. A. Krimm (NSF/USRA), C. B. Markwardt (GSFC),\nJ. P. Norris (BSU), D. M. Palmer (LANL),\nT. Sakamoto (AGU), M. Stamatikos (OSU),\nT. N. Ukwatta (LANL) (i.e. the Swift-BAT team):\n\nUsing the data set from T-240 to T+963 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 170112A (trigger #732188)\n(Mingo, et al., GCN Circ. 20436).  The BAT ground-calculated position is\nRA, Dec = 15.232, -17.233 deg which is\n   RA(J2000)  =  01h 00m 55.7s\n   Dec(J2000) = -17d 13' 57.9\"\nwith an uncertainty of 2.5 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 100%.\n\nThe mask-weighted light curve shows a single-peaked structure that starts\nand peaks at ~T0, and ends at ~T+0.06 s. T90 (15-350 keV) is 0.06 +- 0.02 sec\n(estimated error including systematics).\n\nThe time-averaged spectrum from T-0.00 to T+0.06 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n1.17 +- 0.34.  The fluence in the 15-150 keV band is 1.3 +- 0.4 x 10^-8 erg/cm2.\nThe 1-sec peak photon flux measured from T-0.47 sec in the 15-150 keV band\nis 0.3 +- 0.1 ph/cm2/sec.  All the quoted errors are at the 90% confidence\nlevel.\n\nUsing a 16-ms binned light curve, the lag analysis finds a lag of 19 (-17, +36) ms for\nthe 100-350 keV to 25-50 keV, -7 (-12, +14) ms for the 50-100 keV to 15-25 keV\nband, and 0 (-7, +7) ms for the 50-100 keV to 25-50 keV. These values are\nconsistent with those of a short GRB. Moreover, no extended emission are found.\n\nThe results of the batgrbproduct analysis are available at\nhttp://gcn.gsfc.nasa.gov/notices_s/732188/BA/",
  "circularId": 20443,
  "createdOn": 1484263992000,
  "email": "amy.y.lien@nasa.gov",
  "subject": "GRB 170112A: Swift-BAT refined analysis",
  "submitter": "Amy Lien at GSFC  <amy.y.lien@nasa.gov>",
  "eventId": "GRB 170112A"
}