{
  "bibcode": "2019GCN.24564....1K",
  "body": "H. A. Krimm (NSF), S. D. Barthelmy (GSFC),\nJ. R. Cummings (CPI), A. Y. Lien (GSFC/UMBC),\nC. B. Markwardt (GSFC), M. J. Moss (GWU),\nD. M. Palmer (LANL), T. Sakamoto (AGU),\nM. Stamatikos (OSU), T. N. Ukwatta (LANL)\n(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 190515B (trigger #903845)\n(Moss et al., GCN Circ. 24553).  The BAT ground-calculated position is\nRA, Dec = 98.826, 52.322 deg which is\n   RA(J2000)  =  06h 35m 18.3s\n   Dec(J2000) = +52d 19' 17.6\"\nwith an uncertainty of 1.5 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 67%.\n\nThe mask-weighted light curve shows a single-pulse structure that starts at\n~T-30 s, peaks at ~T0, and ends at ~T+30 s. T90 (15-350 keV) is 46.4 +-\n12.3 sec\n(estimated error including systematics).\n\nThe time-averaged spectrum from T-30.84 to T+31.02 sec is best fit by a\nsimple\npower-law model.  The power law index of the time-averaged spectrum is\n1.74 +- 0.15.  The fluence in the 15-150 keV band is 1.6 +- 0.1 x 10^-6\nerg/cm2.\nThe 1-sec peak photon flux measured from T-0.39 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/903845/BA/",
  "circularId": 24564,
  "createdOn": 1558013283000,
  "email": "amy.y.lien@nasa.gov",
  "subject": "GRB 190515B: Swift-BAT refined analysis",
  "submitter": "Amy Lien at GSFC  <amy.y.lien@nasa.gov>",
  "eventId": "GRB 190515B"
}