TITLE: GCN CIRCULAR NUMBER: 30835 SUBJECT: AGILE observations of two bright bursts from SGR 1935+2154 DATE: 21/09/13 13:06:58 GMT FROM: Alessandro Ursi at INAF/IAPS <alessandro.ursi@gmail.com> A. Ursi (INAF/IAPS), E. Menegoni, L. Foffano (INAF/IAPS), V. Fioretti (INAF/OAS-Bologna), C. Pittori, F. Verrecchia (SSDC, and INAF/OAR), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata), A. Argan, M. Cardillo, C. Casentini, Y. Evangelista, L. Pacciani, G. Piano (INAF/IAPS), F. Lucarelli (SSDC, and INAF/OAR), A. Bulgarelli, 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 satellite clearly detected the two bright bursts from the SGR1935+2154, at T1 = 2021-09-10 00:45:47 s (UTC), reported by Konus-Wind (GCN #30804), Fermi GBM (GCN #30806), and GECAM (GCN #30822), and at T2 = 2021-09-12 20:16:10 s (UTC), reported by Fermi GBM (GCN #30831). The bursts are clearly visible in the AGILE scientific ratemeters of the SuperAGILE (SA; 20-60 keV) and AntiCoincidence (AC; 50-200 keV) detectors. The first event lasted about 2 s and it released a total number of 560 counts in the SA detector (above a background rate of 65 Hz), and 8730 counts in the AC detector (above a background rate of 3450 Hz). The AGILE ratemeter light curves can be found at http://www.agilescienceapp.it/notices/burst210910_AGILE_RM.png . At T1, the SGR1935+2154 was 150 deg off-axis for AGILE. The second event lasted 2 s and it released a total number of 620 counts in the SA detector (above a background rate of 100 Hz), and 8170 counts in the AC detector (above a background rate of 3500 Hz). The AGILE ratemeter light curves can be found at http://www.agilescienceapp.it/notices/burst210912_AGILE_RM.png . At T2, the SGR1935+2154 was 37 deg off-axis for AGILE. Additional analysis of AGILE data is in progress.