TITLE: GCN CIRCULAR NUMBER: 11543 SUBJECT: GRB 110106B: Fermi GBM detection DATE: 11/01/07 16:12:06 GMT FROM: Narayana Bhat at U Alabama/Huntsville/GBM P. N. Bhat (UAH) reports on behalf of the Fermi GBM Team: "At 21:26:16.08 UT on 06 January 2011, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 110106B (trigger 316041978 / 110106893). which was also detected by the Swift/BAT (Sbarufatti et al. 2011, GCN 11525) The GBM on-ground location is consistent with the Swift position. The angle from the Fermi LAT boresight was 103 degrees. This burst was also independently detected by INTEGRAL SPI-ACS. The GBM light curve consists of several pulses with a duration (T90) of about 35.5 s (50-300 keV). The time-averaged spectrum from T0-26.6 s to T0+25.6 s is adequately fit by a simple power law function with index -1.61 +/- 0.04 (C-stat 849 for 242 d.o.f.). The event fluence (10-1000 keV) in this time interval is (5.90 +/- 0.44)E-06 erg/cm^2. The 1-sec peak photon flux measured starting from T0+16.13 s in the 10-1000 keV band is 2.77 +/- 0.27 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."