TITLE: GCN CIRCULAR NUMBER: 23752 SUBJECT: GRB 190117A: AGILE/MCAL detection of a burst DATE: 19/01/17 19:01:06 GMT FROM: Alessandro Ursi at INAF/IAPS A.Ursi (INAF/IAPS), C. Pittori (SSDC, and INAF/OAR), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata), A. Argan, M. Cardillo, C. Casentini, Y. Evangelista, G. Piano (INAF/IAPS), F. Lucarelli, F. Verrecchia (SSDC, and INAF/OAR), A. Bulgarelli, V. Fioretti, F. Fuschino, N. Parmiggiani (INAF/OAS-Bologna), M. Marisaldi (INAF/OAS-Bologna, and Bergen University), M. Pilia, A. Trois (INAF/OA-Cagliari), I. Donnarumma (ASI), F. Longo (Univ. Trieste and INFN Trieste), A. Giuliani (INAF/IASF-Mi), report on behalf of the AGILE Team: The AGILE Mini-CALorimeter (MCAL) detected a burst at T0 = 2019-01-17 14:36:49.01 +/- 0.01 s (UTC). In the 0.4-100 MeV energy range, the event lasted about 0.6 s and released a total number of ~530 counts in the detector, above an average background rate of 540 counts / s. The GRB is clearly detected also by the AGILE scientific ratemeters: in particular, by the Super-AGILE (20-60 keV), Anti-Coincidence (50-200 keV), and MCAL (0.4-100 MeV) ratemeters. Further analysis is still in progress. The AGILE-MCAL detector has a full solid angle acceptance, and is operational in the range 0.4 - 100 MeV.