{
  "bibcode": "2015GCN.18130....1J",
  "body": "P. Jenke (UAH) reports on behalf of the Fermi GBM Team:\n\n\"At 20:22:13.75 UT on August 11 2015, the Fermi Gamma-Ray Burst \nMonitor triggered and located \nGRB 150811B (trigger 461017337/150811849). \nThe GBM on-ground location, using the Fermi GBM trigger data, \nis RA = 188.0, Dec = -13.5 (J2000 degrees, equivalent to \n12h 32m 00s, -13d 30'), with an uncertainty of 8.7 \ndegree (radius, 1-sigma containment,\nstatistical only; there is additionally a systematic error which is\ncurrently estimated to be 2 to 3 degrees).\n\nThe angle of the burst direction to the Fermi LAT boresight is \n108 degrees.\n\nThe GBM light curve consists of a single peak with a duration\n(T90) of about 0.6 s (50-300 keV).\nThe time-averaged spectrum from T0-0.13 s to T0+0.64 s is\nadequately fit by a Band function with Epeak = 1300 +/- 100 keV,\nAlpha =-0.23 +/- 0.07 and Beta = -3.0 +/- 0.2.\n\nThe event fluence (10-1000 keV) in this time interval is\n(1.6 +/- 0.1)E-07 erg/cm^2. The 64 ms peak photon flux measured\nstarting from T0-0.13 s in the 10-1000 keV band\nis 8.6 +/- 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": 18130,
  "createdOn": 1439348345000,
  "email": "peter.a.jenke@nasa.gov",
  "subject": "GRB 150811B: Fermi GBM detection",
  "submitter": "Peter Jenke at MSFC  <peter.a.jenke@nasa.gov>",
  "eventId": "GRB 150811B"
}