{
  "submitter": "sumanbala2210@gmail.com",
  "subject": "GRB GRB240101C: Fermi GBM observation",
  "body": "S. Bala (USRA), B. Mailyan (Florida Tech) and C. Meegan (UAH) report on behalf of\nthe Fermi Gamma-ray Burst Monitor Team:\n\n\n\"At 12:57:23.76 UT on 01 January 2024, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered and located GRB 240101C (trigger 725806648/240101540),\nwhich was also detected by the Swift/BAT-GUANO (J. DeLaunay et. al. 2023, GCN 35482), \nGRBAlpha (Dafcikova et al. GCN Circ. 35459) and AstroSat CZTI (Navaneeth et al. \nGCN 35478). The Fermi GBM on-ground calculated location, using the Fermi GBM \ntrigger data has been reported at GCN 35451.\n\nThe angle from the Fermi LAT boresight at the GBM trigger time is 69.0 degrees.\n\nThe GBM light curve consists of one very short peak\nwith a duration (T90) of about 0.35 s (50-300 keV).\nThe time-averaged spectrum from T0-0.064 s to T0+0.256 s is\nbest fit by a Comptonized Epeak function with Epeak = 286.4 +/- 21.8 keV, and\nalpha = 0.10 +/- 0.14.\n\nThe event fluence (10-1000 keV) in this time interval is\n(1.19 +/- 0.07)E-6 erg/cm^2. The 64-msec peak photon flux measured\nstarting from T0 in the 10-1000 keV band\nis 460.9 +/- 77.4 ph/s/cm^2.\n\nA Band function fits the spectrum equally well\nwith Epeak= 242.7 +/- 28.8 keV, alpha = 0.30 +/- 0.20 and beta = -2.50 +/- 0.39.\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/\"",
  "eventId": "GRB 240101C",
  "bibcode": "2024GCN.35488....1B",
  "createdOn": 1704480114234,
  "submittedHow": "web",
  "circularId": 35488
}