{
  "bibcode": "2015GCN.18622....1M",
  "body": "C. B. Markwardt (GSFC), A. Amaral-Rogers (U Leicester), S. D. Barthelmy (GSFC),\nJ. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA),\nA. Y. Lien (GSFC/UMBC), D. M. Palmer (LANL), T. Sakamoto (AGU),\nM. Stamatikos (OSU), T. N. Ukwatta (LANL) (i.e. the Swift-BAT team):\n\nUsing the data set from T-239 to T+941 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 151118A (trigger #664078)\n(Amaral-Rogers, et al., GCN Circ. 18611).  The BAT ground-calculated position is\nRA, Dec = 57.169, 65.889 deg which is\n  RA(J2000)  =  03h 48m 40.6s\n  Dec(J2000) = +65d 53' 22.0\"\nwith an uncertainty of 1.4 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 98%.\n\nThe mask-weighted light curve shows a multi-peaked structure that\nstarts at ~ T0 and ends at ~T+30 s. The structure contains roughly two main\npulses that peak at ~ T0 and ~T+7 s, respectively. T90 (15-350 keV) is\n23.4 +- 10.5 sec (estimated error including systematics).\n\nThe time-averaged spectrum from T+0.0 to T+30.8 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n1.80 +- 0.20.  The fluence in the 15-150 keV band is 4.5 +- 0.6 x 10^-7 erg/cm2.\nThe 1-sec peak photon flux measured from T+6.41 sec in the 15-150 keV band\nis 1.2 +- 0.1 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/664078/BA/",
  "circularId": 18622,
  "createdOn": 1447979794000,
  "email": "amy.y.lien@nasa.gov",
  "subject": "GRB 151118A, Swift-BAT refined analysis",
  "submitter": "Amy Lien at GSFC  <amy.y.lien@nasa.gov>",
  "eventId": "GRB 151118A"
}