TITLE: GCN CIRCULAR NUMBER: 11569 SUBJECT: GRB 110112B: Fermi GBM observation DATE: 11/01/14 20:44:30 GMT FROM: Valerie Connaughton at UAH/NSSTC Valerie Connaughton (UAH) reports on behalf of the Fermi GBM Team: "At 22:24:55.28 UT on 12 January 2011, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 110112B (trigger 316563897 / 110112934), which was also detected by INTEGRAL IBAS in the IBIS/ISGRI data (Mereghetti 2011, GCN 11562). The angle from the Fermi LAT boresight is 50 degrees. The GBM light curve consists of a single forked peak lasting about 0.256 s. The time-averaged spectrum from T0-0.064 s to T0+0.192 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -0.72 ± 0.20 and the cutoff energy, parametrized as Epeak, is 495 ± 196 keV. The event fluence (10-1000 keV) in this time interval is (3.53 ± 0.49)E-07 erg/cm2. The 64 ms peak photon flux measured starting from T0-0.064 s in the 10-1000 keV band is 8.7 ± 1.0 ph/s/cm2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."