{
  "bibcode": "2020GCN.27674....1M",
  "body": "C. Malacaria (NASA/MSFC/USRA) reports on behalf of the Fermi GBM Team:\n\n\"At 12:56:41 UT on 30 April 2020, the Swift Burst Alert Telescope (BAT) \ntriggered and located SGR 1806-20 (GCN 27672).\n\nThere was no Fermi-GBM onboard trigger around the event time.\nHowever, the GBM targeted search [1], the most sensitive, coherent search\nfor sub-threshold signals, was run from +/-5 s around the trigger time, \nand identified a significant signal whose location is consistent with SGR 1806-20.\nThe search was run down to a timescale of 4 ms and finds the most significant \ntimescale at 32 ms, with a log likelihood ratio of 50.\n\nThe flare spectrum is well fit by a blackbody model with a best-fit temperature \nvalue of kT=7.5+/-1.1 keV. The event fluence (8-100 keV)\nin this time interval is (1.5 +/- 0.3)E-7 erg/cm^2.\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/\n\n[1] Goldstein et al. 2019 arXiv:1903.12597\"",
  "circularId": 27674,
  "createdOn": 1588347499000,
  "email": "cmalacaria@usra.edu",
  "subject": "Fermi GBM observation of a flare from the magnetar SGR 1806-20",
  "submitter": "Christian Malacaria at NASA-MSFC/USRA  <cmalacaria@usra.edu>"
}