{
  "bibcode": "2013GCN.15053....1G",
  "body": "A. Goldstein (ORAU/NASA MSFC) reports on behalf of the Fermi GBM Team:\n\nAt 16:45:20.91 UT on 27 July 2013, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 130727A (trigger 396636323 /130727698)\nwhich was also detected by the Swift BAT (Stroh et al. 2013, GCN 15046).\nThe GBM on-ground location is consistent with the Swift position;\nthe angle from the Fermi LAT boresight is 134 degrees.\n\nThe GBM light curve consists of one main pulse with substructure\nwith a duration (T90) of about 13.0 s (50-300 keV).  The \ntime-averaged spectrum from T0=-1.0 s to T0+12.0 s is adequately fit \nby a Band function with Epeak = 118 +/- 17 keV, alpha = -1.1 +/- 0.1, \nand beta = -2.2 +/- 0.1.\n\nThe event fluence (10-1000 keV) in this time interval is \n(8.9 +/- 0.3)E-06 erg/cm^2. The 1-sec peak photon flux measured starting \nfrom T0+6.1 s in the 8-1000 keV band is 11.1 +/- 0.6 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.",
  "circularId": 15053,
  "createdOn": 1374976173000,
  "email": "adam.m.goldstein@msfc.nasa.gov",
  "subject": "GRB 130727A: Fermi GBM detection",
  "submitter": "Adam Goldstein at Fermi-GBM/UAH  <adam.m.goldstein@msfc.nasa.gov>",
  "eventId": "GRB 130727A"
}