{
  "bibcode": "2018GCN.23500....1B",
  "body": "S. D. Barthelmy (GSFC), J. R. Cummings (CPI),\nH. A. Krimm (NSF/USRA), A. Y. Lien (GSFC/UMBC),\nC. B. Markwardt (GSFC), D. M. Palmer (LANL),\nT. Sakamoto (AGU), M. Stamatikos (OSU),\nE. Troja (NASA/GSFC/UMCP), T. N. Ukwatta (LANL)\n(i.e. the Swift-BAT team):\n\nUsing the data set from T-240 to T+962 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 181203A (trigger #874475)\n(Troja et al., GCN Circ. 23493).  The BAT ground-calculated position is\nRA, Dec = 108.341, -39.783 deg which is\n   RA(J2000)  =  07h 13m 21.8s\n   Dec(J2000) = -39d 46' 57.1\"\nwith an uncertainty of 1.3 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 83%.\n\nThe mask-weighted light curve shows a single-peaked structure that starts at\n~T-2 s, peaks at ~T+1 s, and ends at ~T+16 s. T90 (15-350 keV) is 15.30 +- 1.75 sec\n(estimated error including systematics).\n\nThe time-averaged spectrum from T-1.96 to T+15.77 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n1.79 +- 0.15.  The fluence in the 15-150 keV band is 7.8 +- 0.7 x 10^-7 erg/cm2.\nThe 1-sec peak photon flux measured from T+1.02 sec in the 15-150 keV band\nis 1.1 +- 0.2 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/874475/BA/",
  "circularId": 23500,
  "createdOn": 1543895569000,
  "email": "amy.y.lien@nasa.gov",
  "subject": "GRB 181203A: Swift-BAT refined analysis",
  "submitter": "Amy Lien at GSFC  <amy.y.lien@nasa.gov>",
  "eventId": "GRB 181203A"
}