{
  "bibcode": "2020GCN.28179....1K",
  "body": "H. A. Krimm (NSF), S. D. Barthelmy (GSFC),\nJ. R. Cummings (CPI), P. A. Evans (U Leicester),\nS. Laha (GSFC/UMBC), A. Y. Lien (GSFC/UMBC),\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, we report further analysis of BAT GRB 200729A\n(trigger #984929) (Evans et al., GCN Circ. 28165).\nThe BAT ground-calculated position is\nRA, Dec = 184.360, 45.571 deg which is\n   RA(J2000)  =  12h 17m 26.5s\n   Dec(J2000) = +45d 34' 13.9\"\nwith an uncertainty of 2.3 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 46%.\n\nThe mask-weighted light curve shows a weak pulse that starts at ~T0,\npeaks at ~T+6 s, and ends at ~T+130 s. T90 (15-350 keV)\nis 122.0 +- 34.2 sec (estimated error including systematics).\n\nThe time-averaged spectrum from T+0.54 to T+136.54 sec is best fit\nby a simple power-law model.  The power law index of the time-averaged\nspectrum is 0.96 +- 0.27.  The fluence in the 15-150 keV band\nis 1.6 +- 0.2 x 10^-6 erg/cm2. The 1-sec peak photon flux measured\nfrom T+5.54 sec in the 15-150 keV band is 0.7 +- 0.3 ph/cm2/sec.\nAll the quoted errors are at the 90% confidence level.\n\nThe results of the batgrbproduct analysis are available at\nhttp://gcn.gsfc.nasa.gov/notices_s/984929/BA/",
  "circularId": 28179,
  "createdOn": 1596133358000,
  "email": "amy.y.lien@nasa.gov",
  "subject": "GRB 200729A: Swift-BAT refined analysis",
  "submitter": "Amy Lien at GSFC  <amy.y.lien@nasa.gov>",
  "eventId": "GRB 200729A"
}