GCN Circular 32181
B. Hristov (UAH) and C. Meegan (UAH) report on behalf of the Fermi GBM Team: "At 00:35:39.28 UT on 06 June 2022, the Fermi Gamma-Ray Burst Monitor (GBM) triggered and located GRB 220606A (trigger 676168544 / 220606025, GCN 32164), which was also detected by the Swift/BAT-GUANO (A. Tohuvavohu et al. 2022, GCN 32171). The GBM light curve consists of multiple peaks with a duration (T90) of about 19.7 +/- 1.6 s (50-300 keV). The time-averaged spectrum from T0-2.560 s to T0+17.664 s is well fit by a simple power law with index = -1.37 +/- 0.03. The event fluence (10-1000 keV) in this time interval is (2.88 +/- 0.17)E-6 erg/cm^2. The 1-sec peak photon flux measured starting from T0-0.64 s in the 10-1000 keV band is 1.6 +/- 0.2 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/"