{
  "bibcode": "2019GCN.24502....1B",
  "body": "S. D. Barthelmy (GSFC),  M. G. Bernardini (INAF-OAB), J. R. Cummings (CPI),\nH. A. Krimm (NSF/USRA),  A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC),\nD. M. Palmer (LANL), T. 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 downlink,\nwe report further analysis of BAT GRB 190511Atrigger #903158)\n(Bernardini, et al., GCN Circ. 24472).  The BAT ground-calculated position is\nRA, Dec = 126.443, -20.252 deg which is \n  RA(J2000)  =  08h 25m 46.2s \n  Dec(J2000) = -20d 15' 05.6\" \nwith an uncertainty of 1.5 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 9%.\n\nThe mask-weighted light curve shows a complex, multi-peaked structure,\nstarting at about T-25 sec, peaking at T+0 sec and declining to background\nby T+10 sec.  The spacecraft slewed away from the burst position by \nT+475 sec.  T90 (15-350 keV) is 27.7 +- 2.4 sec (estimated error including \nsystematics).\n\nThe time-averaged spectrum from T-24.27 to T+6.88 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n1.19 +- 0.10.  The fluence in the 15-150 keV band is 7.4 +- 0.5 x 10^-6 erg/cm2.\nThe 1-sec peak photon flux measured from T+0.36 sec in the 15-150 keV band\nis 6.2 +- 1.2 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/903158/BA/",
  "circularId": 24502,
  "createdOn": 1557677720000,
  "email": "hkrimm@nsf.gov",
  "subject": "GRB 190511A: Swift-BAT refined analysis",
  "submitter": "Hans Krimm at NSF/NASA-GSFC  <hkrimm@nsf.gov>",
  "eventId": "GRB 190511A"
}