{
  "bibcode": "2015GCN.18081....1Y",
  "body": "G. Younes (GWU) reports on behalf of the Fermi GBM Team:\n\n\"At 19:01:56.35 UT on July 27 2015, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 150727A (trigger 459716520/150727793), which\nwas also detected by Swift (Cenko et al. 2015, GCN 18076). The GBM\non-ground location, using the Fermi GBM trigger data, is consistent\nwith the Swift/XRT location.\n\nThe angle of the burst direction to the Fermi LAT boresight\n is 46 degrees.\n\nThe GBM light curve shows a FRED-like (fast-rise exponential-decay)\npulse with a duration (T90) of about 50s (50-300 keV). The\ntime-averaged spectrum from T0-4s to T0+56s is  well fit by a power\nlaw with an exponential high-energy cutoff. The power law index is\n-0.7 +/- 0.1 and the cutoff energy, parameterized as Epeak, is 149 +/-\n10 keV.\n\nThe event fluence (10-1000 keV) in this time interval is\n(7.9 +/- 0.3)E-06 ergs/cm^2. The 1.0-sec peak photon flux measured\nstarting from T0+5.0s in the 10-1000 keV band\nis 2.1 +/- 0.2 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 18081,
  "createdOn": 1438064751000,
  "email": "gyounes@email.gwu.edu",
  "subject": "GRB 150727A: Fermi GBM detection",
  "submitter": "George A. Younes at George Washington U  <gyounes@email.gwu.edu>",
  "eventId": "GRB 150727A"
}