{
  "bibcode": "2016GCN.19861....1S",
  "body": "T. Sakamoto (AGU), S. D. Barthelmy (GSFC), J. R. Cummings (GSFC/UMBC),\nP.A. Evans (U Leicester), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA),\nA. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL),\nM. Stamatikos (OSU), T. 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 160824A (trigger #709765)\n(Evans, et al., GCN Circ. 19855).  The BAT ground-calculated position is\nRA, Dec = 80.087, 40.039 deg which is\n    RA(J2000)  =  05h 20m 20.8s\n    Dec(J2000) = +40d 02' 21.6\"\nwith an uncertainty of 1.2 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 55%.\n\nThe mask-weighted light curve shows two episodes of emission.  The first runs\nfrom T-5 sec to roughly T+45 sec and contains multiple peaks.  The second runs\nfrom T+85 sec to T+110 sec.  T90 (15-350 keV) is 99.3 +- 7.8 sec (estimated \nerror including systematics).\n\nThe time-averaged spectrum from T-0.66 to T+111.58 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n1.64 +- 0.11.  The fluence in the 15-150 keV band is 2.6 +- 0.2 x 10^-6 erg/cm2. \nThe 1-sec peak photon flux measured from T+4.88 sec in the 15-150 keV band is \n1.3 +- 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/709765/BA/\n\n[GCN OPS NOTE(25aug16):  Per author's request, the TBDs for the time range\nof the spectral average was filled in with the actual values.]",
  "circularId": 19861,
  "createdOn": 1472143854000,
  "email": "hans.a.krimm@nasa.gov",
  "subject": "GRB 160824A: Swift-BAT refined analysis",
  "submitter": "Hans Krimm at NASA-GSFC  <hans.a.krimm@nasa.gov>",
  "eventId": "GRB 160824A"
}