GCN Circular 31591
P. Veres and C. Meegan (both UAH) report on behalf of the Fermi GBM Team: "At 01:07:48.88 UT on 11 February 2022, the Fermi Gamma-Ray Burst Monitor (GBM) triggered and located GRB 220211A (trigger 666234473 / 220211047), which was also detected by the Swift/BAT-GUANO (Tohuvavohu et al. GCN 31852). The Fermi GBM Final Real-time Localization was reported in GCN 31570. The GBM light curve consists of a single short pulse with a duration (T90) of about 0.4 s (50-300 keV). The time-averaged spectrum from T0-64 ms to T0+128 ms is adequately fit by a simple power law function with index -1.42 +/- 0.07. The event fluence (10-1000 keV) in this time interval is (1.28 +/- 0.19)E-6 erg/cm^2. The 64 ms peak photon flux measured starting from T0-64 ms in the 10-1000 keV band is 12.8 +/- 2.7 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog: https://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html For Fermi GBM data and info, please visit the official Fermi GBM Support Page: https://fermi.gsfc.nasa.gov/ssc/data/access/gbm/"