TITLE: GCN CIRCULAR NUMBER: 17819 SUBJECT: GRB 150514A: Fermi GBM Detection DATE: 15/05/15 11:32:33 GMT FROM: Oliver Roberts at UCD/Fermi O.J. Roberts (UCD), Bin-Bin Zhang (UAH) and C.Meegan (UAH) report on behalf of the Fermi GBM Team: "At 18:35:05.35 UT on the 14th of May 2015, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 150514A (trigger 453321308 / 150514774), which was also detected by Fermi-LAT (Kocevski et al. 2015, GCN 17816). An afterglow likely to be from this event was also found by Swift (Kennea et al. 2015, GCN 17818). The GBM on-ground location is consistent with the LAT and Swift XRT positions. The angle from the Fermi LAT boresight is about 38 degrees. The GBM light curve consists of a single bright, FRED-like pulse over a duration (T90) of 10.8 s (50-300 keV). The time-averaged spectrum from T0+0.0 s to T0+11.3 s is well fit by a Band function, with an Epeak = 73 +/- 6 keV, alpha = -1.34 +/- 0.07, and beta = -2.51 +/- 0.17. The event fluence (10-1000 keV) in this time interval is (4.9 +/- 0.2)E-06 erg/cm^2. The 1.024-sec peak photon flux measured starting from T0+0.5 s in the 10-1000 keV band is 19.9 +/- 0.4 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."