TITLE: GCN CIRCULAR NUMBER: 33412 SUBJECT: GRB 230307A: AGILE/MCAL detection DATE: 23/03/07 22:40:47 GMT FROM: Claudio Casentini at INAF-IAPS C. Casentini (INAF/IAPS), M. Tavani (INAF/IAPS, and Uni.Roma Tor Vergata), C. Pittori, F. Lucarelli, F. Verrecchia (SSDC, and INAF/OAR) A. Argan, M. Cardillo, Y. Evangelista, L. Foffano, G. Piano (INAF/IAPS), A. Addis, L. Baroncelli, A. Bulgarelli, A. Di Piano, V. Fioretti, G. Panebianco, N. Parmiggiani (INAF/OAS-Bologna), F. Longo (Uni. Trieste, INFN Trieste), M. Romani (INAF/OA-Brera), M. Marisaldi (INAF/OAS-Bologna, Bergen University), M. Pilia, A. Trois (INAF/OA Cagliari), I. Donnarumma, E. Menegoni, A.Ursi (ASI), A. Giuliani (INAF/IASF-Mi) and P. Tempesta (TeleSpazio), report on behalf of the AGILE Team: The AGILE satellite detected the long GRB 230307A at T0 = 2023-03-07 15:44:06 (UTC), reported by Fermi/GBM (GCN #33405 and GCN #33407), GECAM (GCN #33406) and Stix (GCN #33410). The burst is clearly visible in the AGILE scientific ratemeters of the MiniCALorimeter (MCAL; 0.4-100 MeV), and in all the panels of the AntiCoincidence detectors (AC Top, 50-200 keV; AC Lat, 80-200 keV). The event lasted about 30 s and it released a total number of 527069 counts in the MCAL detector (above a background rate of 1154 Hz), and 920952 counts in the AC Top detector (above a background rate of 2959 Hz). The AGILE ratemeters light curves can be found at: http://www.agilescienceapp.it/notices/GRB230307A_AGILE_RM_ND.png . The event also triggered a high-time resolution MCAL data acquisition, from T0 to T0+22 s (UTC), and released 241403 counts in the detector, above a background rate of 510 Hz. The MCAL light curve can be found at: http://www.agilescienceapp.it/notices/GRB230307A_082567_605288646.000000.png . At the T0, the event was 54 deg off-axis. Additional analysis of AGILE data is in progress. Automatic MCAL GRB alert Notices can be found at: https://gcn.gsfc.nasa.gov/agile_mcal.html