{
  "bibcode": "2019GCN.23898....1M",
  "body": "B. Mailyan (UAH) and C. Meegan (UAH)\n report on behalf of the Fermi GBM Team:\n\n\"At 18:31:22.48 UT on 15 February 2019, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 190215A (trigger 571948287 / 190215772).\nThe on-ground calculated location, using the GBM trigger data, is\n\nRA, Dec = 340.4, +37.5 (J2000 degrees)\n\nwith an uncertainty of 1.0 degree (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 initial angle from the Fermi LAT boresight to\nthe best location is 25 degrees.\n\nThe GBM light curve consists of a bright FRED-like peak with multiple\npulses within it,\nwith a duration (T90) of about 23 s (50-300 keV).\nThe time-averaged spectrum from T0+0 s to T0+23 s is\nbest fit by a power law function with an exponential\nhigh-energy cutoff.  The power law index is -0.18 +/- 0.03 and\nthe cutoff energy, parameterized as Epeak, is 204 +/- 4 keV.\n\nThe event fluence (10-1000 keV) in this time interval is\n(2.0 +/- 0.3)E-05  erg/cm^2. The 1s peak photon flux measured\nstarting from T0+5.8 s in the 10-1000 keV band\nis 8.7 +/- 0.3 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 23898,
  "createdOn": 1550278856000,
  "email": "bm0054@uah.edu",
  "subject": "GRB 190215A: Fermi GBM detection",
  "submitter": "Bagrat Mailyan at UAH  <bm0054@uah.edu>",
  "eventId": "GRB 190215A"
}