{
  "bibcode": "2020GCN.27993....1F",
  "body": "C. Fletcher (USRA) and C. Meegan (UAH)\nreport on behalf of the Fermi GBM Team:\n\n\"At 02:36:11.67 UT on 19 June 2020, the Fermi Gamma-Ray Burst Monitor (GBM)\ntriggered and located GRB 200619A (trigger 614226976 / 200619108).\nThis burst was also detected by the AGILE satellite (A. Ursi et al. 2020, GCN 27991)\nand Insight-HXMT/HE (S. Xiao et al. 2020, GCN 27985).\n\nThe on-ground calculated location, using the GBM trigger\ndata, is RA = 101.4, DEC = 56.7 (J2000 degrees,\nequivalent to 06h 45m, 56d 44'), with a statistical uncertainty\nof 4.0 degrees (radius, 1-sigma containment,\nstatistical only; there is additionally a systematic\nerror which we have characterized as a core-plus-tail model, with 90% of\nGRBs having a 3.7 deg error and a small tail suffering a larger than 10 deg\nsystematic error. [Connaughton et al. 2015, ApJS, 216, 32] ).\n\nThe angle from the Fermi LAT boresight at the GBM trigger time is 103 degrees.\n\nThe GBM light curve consists of a single bright peak\nwith a duration (T90) of about 29 s (50-300 keV).\nThe time-averaged spectrum from T0+0.003 s to T0+29.120 s is\nbest fit by a power law function with an exponential\nhigh-energy cutoff.  The power law index is -0.82 +/- 0.06 and\nthe cutoff energy, parameterized as Epeak, is 1268 +/- 199 keV.\n\nThe event fluence (10-1000 keV) in this time interval is\n(1.42 +/- 0.04)E-05 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+0.064 s in the 10-1000 keV band\nis 4.8 +/- 0.4 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog:\nhttps://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html\n\nFor Fermi GBM data and info, please visit the official Fermi GBM Support Page:\nhttps://fermi.gsfc.nasa.gov/ssc/data/access/gbm/\"",
  "circularId": 27993,
  "createdOn": 1592601301000,
  "email": "cfletcher@usra.edu",
  "subject": "GRB 200619A: Fermi GBM observation",
  "submitter": "Cori Fletcher at USRA  <cfletcher@usra.edu>",
  "eventId": "GRB 200619A"
}