{
  "bibcode": "2022GCN.32437....1P",
  "body": "S. Poolakkil (UAH) and C. Meegan (UAH)\nreport on behalf of the Fermi GBM Team:\n\n\"At 15:48:55.032 UT on 30 July 2022, the Fermi Gamma-Ray Burst Monitor (GBM)\ntriggered and located GRB 220730A (trigger 680888940 / 220730659)\nwhich was also detected by the Swift/BAT (Dichiara et al. 2022, GCN 32431).\n\nThe angle from the Fermi LAT boresight at the GBM trigger time is 121\ndegrees.\n\nThe GBM light curve consists of a single peak followed\nby some extended emission with a duration (T90) of about 0.16 s (50-300\nkeV).\nThe time-averaged spectrum from T0-0.064 s to T0+0.192 s\nis best fit by a power law function with an exponential\nhigh-energy cutoff. The power law index is -0.34 +/- 0.18  and\nthe cutoff energy, parameterized as Epeak, is 488 +/- 84 keV.\nA Band function fits equally well, with Epeak = 412 +/- 97 keV,\nalpha = -0.21 +/- 0.25 and beta = -2.47 +/- 0.68.\n\nThe event fluence (10-1000 keV) in this time interval is\n(1.06 +/- 0.09)E-06 erg/cm^2. The 64-ms peak photon flux measured\nstarting from T0 s in the 10-1000 keV band\nis 24.9 +/- 2.2 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\nPage:\nhttps://fermi.gsfc.nasa.gov/ssc/data/access/gbm/\"",
  "circularId": 32437,
  "createdOn": 1659454607000,
  "email": "sp0076@uah.edu",
  "subject": "GRB 220730A: Fermi GBM detection",
  "submitter": "Suraj Poolakkil at UAH  <sp0076@uah.edu>",
  "eventId": "GRB 220730A"
}