{
  "bibcode": "2018GCN.23136....1U",
  "body": "T. N. Ukwatta (LANL), S. D. Barthelmy (GSFC),\nJ. R. Cummings (CPI), H. A. Krimm (NSF/USRA),\nA. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC),\nD. M. Palmer (LANL), T. Sakamoto (AGU),\nM. Stamatikos (OSU) (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 180812A (trigger #852903)\n(Lien et al., GCN Circ. 23129).  The BAT ground-calculated position is\nRA, Dec = 245.839, 74.674 deg which is\n  RA(J2000)  =  16h 23m 21.3s\n  Dec(J2000) = +74d 40' 27.0\"\nwith an uncertainty of 2.3 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 26%.\n\nThe mask-weighted light curve shows a multi-peaked structure that starts\nat ~T0 and ends at ~T+17 s. T90 (15-350 keV) is 16.51 +- 0.92 sec (estimated\nerror including systematics).\n\nThe time-averaged spectrum from T-0.30 to T+16.63 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n1.22 +- 0.27.  The fluence in the 15-150 keV band is 8.0 +- 1.4 x 10^-7 erg/cm2.\nThe 1-sec peak photon flux measured from T+15.62 sec in the 15-150 keV band\nis 1.9 +- 0.4 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/852903/BA/",
  "circularId": 23136,
  "createdOn": 1534108773000,
  "email": "amy.y.lien@nasa.gov",
  "subject": "GRB 180812A: Swift-BAT refined analysis",
  "submitter": "Amy Lien at GSFC  <amy.y.lien@nasa.gov>",
  "eventId": "GRB 180812A"
}