{
  "submittedHow": "web",
  "format": "text/plain",
  "subject": "GRB 241120A: Fermi GBM Observation",
  "bibcode": "2024GCN.38285....1H",
  "circularId": 38285,
  "body": "R. Hamburg (USRA) and C. Meegan (UAH) report on behalf of\nthe Fermi Gamma-ray Burst Monitor Team:\n\n\"At 05:53:58.54 UT on 20 November 2024, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered and located GRB 241120A (trigger 753774843/241120246),\nwhich was also detected by INTEGRAL/IBAS (Gotz et al. 2024, GCN 38280).\nThe Fermi GBM on-ground location is consistent with the INTEGRAL position.\n\nThe angle from the Fermi LAT boresight is about 39 degrees.\n\nThe GBM light curve consists of a single emission episode with a duration (T90)\nof about 3.2 s (50-300 keV). The time-averaged spectrum\nfrom T0-0.5 to T0+3.3 s is best fit by a Band function with \nEpeak = 181 +/- 13, alpha = -0.3 +/- 0.1, and beta = -2.4 +/- 0.2.\n\nThe event fluence (10-1000 keV) in this time interval is\n(3.6 +/- 0.1)E-06 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+1.7 s in the 10-1000 keV band is 12.3 +/- 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/\"",
  "createdOn": 1732134672455,
  "eventId": "GRB 241120A",
  "submitter": "rhamburg@usra.edu"
}