{
  "bibcode": "2020GCN.27659....1F",
  "body": "C. Fletcher (USRA) reports on behalf of the Fermi GBM Team:\n\n\"At 18:26:20.16 UT on 27 April 2020, the Fermi Gamma-Ray Burst\nMonitor triggered on a bright, SGR-like burst from the direction\nof the magnetar SGR 1935+2154 (trigger 609704785/ 200427768),\nwhich was also detected by the Swift/BAT (Barthelmy et al. 2020, GCN 27657).\n\nThe burst has a duration (T90) of ~2 seconds in the energy range 10-200 keV.\n\nIt is well-fit by a power law function with an exponential\nhigh-energy cutoff. The power law index is 0.02 +/- 0.68 and\nthe cutoff energy, parameterized as Epeak, is 27.2 +/- 2.5 keV.\n\nThe event fluence (10-200 keV) from T0-1.024 to T0+1.024 is (2.0 +/- 0.2)E-7 erg/cm^2.\nThe average photon flux in the 10-200 keV band during this period is 2.5 +/- 0.2\nph/s/cm^2.\n\nFermi GBM also subsequently triggered on multiple bursts from SGR 1935+2154 on\n27 April 2020 with a fraction of these being misclassified as GRBs.\n\nThe spectral analysis results presented above are preliminary.\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": 27659,
  "createdOn": 1588040910000,
  "email": "cfletcher@usra.edu",
  "subject": "Fermi GBM observation of a bright flare from magnetar SGR 1935+2154",
  "submitter": "Cori Fletcher at USRA  <cfletcher@usra.edu>",
  "eventId": "SGR 1935+2154"
}