{
  "bibcode": "2016GCN.19934....1K",
  "body": "H. A. Krimm (GSFC/USRA), S. D. Barthelmy (GSFC),  J. R. Cummings (CPI),\nN. Gehrels (GSFC), A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC),\nD. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU), T. N. Ukwatta\n(LANL)\n(i.e. the Swift-BAT team):\n\nUsing the data set from T-60 to T+243 sec from the recent telemetry\ndownlink,\nwe report further analysis of BAT GRB 160917A (trigger #712505)\n(Racusin, et al., GCN Circ. 19926).  The BAT ground-calculated position is\nRA, Dec = 295.652, 46.400 deg which is\n   RA(J2000)  =  19h 42m 36.4s\n   Dec(J2000) = +46d 23' 59.3\"\nwith an uncertainty of 1.5 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 43%.\n\nThe mask-weighted light curve shows an initial bright peak about 1 second\nlong with\nsome structure on finer time scales, and variable emission for another 30\nseconds. Another weak peak occurs from T+50 to T+90 seconds. T90 (15-350\nkeV) is 16 +- 2 sec\n(estimated error including systematics).\n\nThe time-averaged spectrum from T-0.34 to T+15.31 sec is best fit by a\nsimple\npower-law model.  The power law index of the time-averaged spectrum is\n0.89 +- 0.15.  The fluence in the 15-150 keV band is 1.3 +- 0.1 x 10^-06\nerg/cm2.\nThe 1-sec peak photon flux measured from T-0.01 sec in the 15-150 keV band\nis 2.2 +- 0.3 ph/cm2/sec.  All the quoted errors are at the 90% confidence\nlevel.\n\nThe results of the batgrbproduct analysis are available at\nhttp://gcn.gsfc.nasa.gov/notices_s/712505/BA/",
  "circularId": 19934,
  "createdOn": 1474221096000,
  "email": "jcummings@cpi.com",
  "subject": "GRB 160917A: Swift-BAT refined analysis",
  "submitter": "Jay R. Cummings at Swift  <jcummings@cpi.com>",
  "eventId": "GRB 160917A"
}