GCN Circular 16262
Matthew Stanbro (UAH) reports on behalf of the Fermi GBM Team: "At 19:31:42.50 UT on 12 May 2014, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 140512A (trigger 421615905 / 140512814) which was also detected by Swift (C. Pagani et al. 2014, GCN 16249). The GBM on-ground location, using the Fermi GBM trigger data, is consistent with the Swift/BAT location. The GBM light curve shows a complex structure, consisting of two main separated episodes with a total duration (T90) of about 148.0 s (50-300 keV). The time-averaged spectrum from T0-10.240 s to T0+152.578 s is well fit by a power law function with an exponential high-energy cutoff. The power law index is -1.33 +/- 0.03 and the cutoff energy, parameterized as Epeak, is 588 +/- 84 keV. The event fluence (10-1000 keV) in this time interval is (4.30 +/- 0.10)E-05 erg/cm^2. The 1.024-sec peak photon flux measured starting from T0+128.70 s in the 10-1000 keV band is 11.0 +/- 0.3 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."