TITLE: GCN CIRCULAR NUMBER: 12073 SUBJECT: GRB 110610A: Fermi GBM detection DATE: 11/06/15 00:42:24 GMT FROM: Shaolin Xiong at UAH Shaolin Xiong (UAH) reports on behalf of the Fermi GBM Team: "At 15:21:32.549 UT on 10 June 2011, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 110610A (trigger 329412094 / 110610640), which was also detected by the Swift/BAT (Marshall et al. 2011, GCN 12065). The GBM on-ground location is consistent with the Swift position. This burst was also detected by INTEGRAL SPI-ACS and Suzaku WAM. The angle from the Fermi LAT boresight is 59 degrees. The GBM light curve consists of multiple peaks with a duration (T90) of about 40 s (50-300 keV). The time-averaged spectrum from T0+0.0 s to T0+39.4 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -0.97 +/- 0.05 and the cutoff energy, parameterized as Epeak, is 189.9 +/- 14.0 keV. The event fluence (10-1000 keV) in this time interval is (8.70 +/- 0.35)E-06 erg/cm^2. The 1-sec peak photon flux measured starting from T0+33.7 s in the 10-1000 keV band is 5.97 +/- 0.25 ph/s/cm^2. A Band function fits the spectrum equally well with Epeak = 170.0 +/- 19.8 keV, alpha = -0.93 +/- 0.07 and beta = -2.23 +/- 0.20. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."