GCN Circular 20474
F. Verrecchia (ASDC and INAF/OAR), A. Ursi (INAF/IAPS), F. Lucarelli (ASDC and INAF/OAR), F. Longo (Univ. Trieste and INFN Trieste), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata) report: AGILE detected the long GRB 170115B, reported by Fermi-GBM (Hamburg et al. GCN #20463) and Fermi-LAT (McEnery et al. GCN #20464), at favourable off-axis angles between 0 and 30 deg. The AGILE-GRID detected the burst at about 4-sigma above 30 MeV with an extended gamma-ray emission lasting about 60 sec. The AGILE MiniCaLorimeter (MCAL), sensitive in the energy range from 400 keV to 100 MeV, detected this burst that triggered the on-board sub-millisecond timescale logic. The MCAL light curve shows multiple peaks, from T0 until the end of the acquisition at T0 + 10.5 s. Three main peaks are evident during the first 2.5 sec following T0. During this time interval, the total number of counts is ~5500 for a background rate of 580 counts/s. This measurement was obtained with AGILE observing a large portion of the sky in spinning mode.