{
  "bibcode": "2023GCN.33162....1R",
  "body": "O.J. Roberts (USRA) and C. Meegan (UAH) report on\nbehalf of the Fermi Gamma-ray Burst Monitor Team:\n\n\"At 19:07:42.90 UT on 11 January 2023, the Fermi\nGamma-ray Burst Monitor (GBM) triggered and located\nGRB 230111A (trigger 695156867/230111797), which was\nalso detected by MAXI (K. Setoguchi et al. 2023, GCN 33157).\nThe Fermi GBM Localization reported in GCN 33156 is consistent\nwith the MAXI location.\n\nThe angle from the Fermi LAT boresight is 108 degrees.\n\nThe GBM light curve consists of a single peak with a duration (T90)\nof about 9 s (50-300 keV). The time-averaged spectrum\nfrom T0-3.6 to T0+4.8 s is best fit by\na power law function with an exponential high-energy cutoff.\nThe power law index is -0.31 +/- 0.30 and the cutoff energy,\nparameterized as Epeak, is 122 +/- 16 keV.\n\nThe event fluence (10-1000 keV) in this time interval is\n(1.16 +/- 0.12)E-06 erg/cm^2. The measured 1-s peak photon flux\nstarting from T0-0.9 s in the 10-1000 keV band is 2.6 +/- 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:\nhttps://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html\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": 33162,
  "createdOn": 1673546068000,
  "email": "oliver.roberts@nasa.gov",
  "subject": "GRB 230111A: Fermi GBM Observation",
  "submitter": "Oliver J Roberts at USRA/NASA  <oliver.roberts@nasa.gov>",
  "eventId": "GRB 230111A"
}