{
  "bibcode": "2020GCN.27771....1S",
  "body": "M. Stamatikos (OSU), S. D. Barthelmy (GSFC),\nJ. R. Cummings (CPI), H. A. Krimm (NSF),\nS. Laha (GSFC/UMBC), A. Y. Lien (GSFC/UMBC),\nC. B. Markwardt (GSFC), D. M. Palmer (LANL),\nT. Sakamoto (AGU), B. Sbarufatti (PSU),\nT. N. Ukwatta (LANL) (i.e. the Swift-BAT team):\n\nUsing the data set from T-61 to T+242 sec from the recent telemetry\ndownlink,\nwe report further analysis of BAT GRB 200519A (trigger #973140)\n(Sbarufatti et al., GCN Circ. 27756).  The BAT ground-calculated position is\nRA, Dec = 255.319, -30.393 deg which is\n   RA(J2000)  =  17h 01m 16.6s\n   Dec(J2000) = -30d 23' 35.6\"\nwith an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 99%.\n\nThe mask-weighted light curve shows a multi-peaked structure that starts\nat ~T0 and ends at ~T+100 s. The three main peaks occur at ~T+1 s, ~T+24 s,\nand ~T+75 s, respectively. T90 (15-350 keV) is 71.88 +- 1.28 sec (estimated\nerror including systematics).\n\nThe time-averaged spectrum from T-0.45 to T+103.00 sec is best fit\nby a simple power-law model.  The power law index of the time-averaged\nspectrum is 1.42 +- 0.03.  The fluence in the 15-150 keV band\nis 1.2 +- 0.02 x 10^-05 erg/cm2. The 1-sec peak photon flux measured\nfrom T+23.53 sec in the 15-150 keV band is 20.6 +- 0.5 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/973140/BA/",
  "circularId": 27771,
  "createdOn": 1590032337000,
  "email": "amy.y.lien@nasa.gov",
  "subject": "GRB 200519A: Swift-BAT refined analysis",
  "submitter": "Amy Lien at GSFC  <amy.y.lien@nasa.gov>",
  "eventId": "GRB 200519A"
}