{
  "bibcode": "2019GCN.24606....1L",
  "body": "A. Y. Lien (GSFC/UMBC), S. D. Barthelmy (GSFC),\nJ. R. Cummings (CPI), H. A. Krimm (NSF),\nC. B. Markwardt (GSFC), 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-239 to T+963 sec from the recent telemetry\ndownlink,\nwe report further analysis of BAT GRB 190519A (trigger #904394)\n(Ukwatta et al., GCN Circ. 24595).  The BAT ground-calculated position is\nRA, Dec = 114.758, -38.813 deg which is\n   RA(J2000)  =  07h 39m 01.9s\n   Dec(J2000) = -38d 48' 46.6\"\nwith an uncertainty of 1.7 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 8%.\n\nThe mask-weighted light curve shows a multi-peaked structure that starts at\n~T-60 s and ends at ~T+15 s. The main peak occurs at ~T0. T90 (15-350 keV)\nis 45.58 +- 2.86 sec (estimated error including systematics).\n\nThe time-averaged spectrum from T-56.97 to T+14.79 sec is best fit by a\npower law\nwith an exponential cutoff.  This fit gives a photon index 1.32 +- 0.24,\nand Epeak of 90.0 +- 35.0 keV (chi squared 76.36 for 56 d.o.f.).  For this\nmodel the total fluence in the 15-150 keV band is 1.8 +- 0.1 x 10^-5 erg/cm2\nand the 1-sec peak flux measured from T-0.21 sec in the 15-150 keV band is\n20.6 +- 1.7 ph/cm2/sec.  A fit to a simple power law gives a photon index\nof 1.72 +- 0.06 (chi squared 85.04 for 57 d.o.f.).  All the quoted errors\nare at the 90% confidence level.\n\nThe results of the batgrbproduct analysis are available at\nhttp://gcn.gsfc.nasa.gov/notices_s/904394/BA/",
  "circularId": 24606,
  "createdOn": 1558303822000,
  "email": "amy.y.lien@nasa.gov",
  "subject": "GRB 190519A: Swift-BAT refined analysis",
  "submitter": "Amy Lien at GSFC  <amy.y.lien@nasa.gov>",
  "eventId": "GRB 190519A"
}