{
  "bibcode": "2018GCN.23095....1M",
  "body": "C. Malacaria (NASA-MSFC/USRA), R. Hamburg (UAH), and C. Meegan (UAH)\r\nreport on behalf of the Fermi GBM Team:\r\n\r\n\"At 22:38:59.66 UT on 06 August 2018, the Fermi Gamma-Ray Burst\r\nMonitor triggered and located GRB 180806A\r\n(trigger 555287944 / 180806944).\r\n\r\nThe event was also possibly detected by MASTER OT\r\n(Lipunov et al. 2018, GCN 23091) and COATLI (Watson et al. 2018,\r\nGCN 23092, GCN 23094) and triggered a Swift/XRT ToO\r\n(Evans et al. 2018, GCN 23093).\r\nThe GBM on-ground location and the MASTER position are consistent.\r\n\r\nThe angle from the Fermi LAT boresight at the\r\nGBM trigger time is 66 degrees.\r\n\r\nThe GBM light curve consists of a single peak\r\nwith a duration (T90) of about 15.6 +/- 0.8 s (50-300 keV).\r\nThe time-averaged spectrum from T0-1.5 s to T0+16.9 s is\r\nbest fit by a Band function with Epeak = 482.40 +/- 31.2,\r\nalpha index = -0.95 +/- 0.02 and beta index = -2.37 +/- 0.19.\r\n\r\nThe event fluence (10-1000 keV) in this time interval is\r\n(2.197 +/- 0.039)E-05 erg/cm^2. The 1-sec peak photon flux\r\nMeasured starting from T0+4.9 s in the 10-1000 keV band\r\nis 14.3 +/- 0.3 ph/s/cm^2.\r\n\r\nThe spectral analysis results presented above are preliminary;\r\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 23095,
  "createdOn": 1533663357000,
  "email": "christian.malacaria@nasa.gov",
  "subject": "GRB 180806A: Fermi GBM detection",
  "submitter": "Christian Malacaria at U of Alabama/MSFC  <christian.malacaria@nasa.gov>",
  "eventId": "GRB 180806A"
}