{
  "bibcode": "2019GCN.24164....1S",
  "body": "M. Stamatikos (OSU), S. D. Barthelmy (GSFC),  J. R. Cummings (CPI),\nJ.D. Gropp (PSU), H. A. Krimm (NSF/USRA), A. Y. Lien (GSFC/UMBC),\nC. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU),\nT. N. Ukwatta (LANL) (i.e. the Swift-BAT team):\n\nUsing the data set from T-240 to T+962 sec from the recent telemetry\ndownlink,\nwe report further analysis of BAT GRB 190424A (trigger #900285)\n(Group, et al., GCN Circ. 24163).  The BAT ground-calculated position is\nRA, Dec = 48.693, 20.239 deg which is\n   RA(J2000)  =  03h 14m 46.2s\n   Dec(J2000) = +20d 14' 19.9\"\nwith an uncertainty of 1.4 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 41%.\n\nThe mask-weighted light curve shows a single, fairly symmetrical pulse\nstarting\nat T-2 seconds, peaking at T+2 sec, and declining to background by T+12 sec.\nThe spacecraft slewed away from the burst location at T+80 sec.\nT90 (15-350 keV) is 10.6 +- 2.3 sec (estimated error including systematics).\n\nThe time-averaged spectrum from T-1.31 to T+12.04 sec is best fit by a\nsimple\npower-law model.  The power law index of the time-averaged spectrum is\n1.45 +- 0.13.  The fluence in the 15-150 keV band is 1.2 +- 0.1 x 10^-6\nerg/cm2.\nThe 1-sec peak photon flux measured from T+1.10 sec in the 15-150 keV band\nis 2.0 +- 0.3 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/900285/BA/",
  "circularId": 24164,
  "createdOn": 1556141210000,
  "email": "amy.y.lien@nasa.gov",
  "subject": "GRB 190424A: Swift-BAT refined analysis",
  "submitter": "Amy Lien at GSFC  <amy.y.lien@nasa.gov>",
  "eventId": "GRB 190424A"
}