TITLE: GCN CIRCULAR NUMBER: 29179 SUBJECT: GRB 201227A: AGILE detection of a burst DATE: 20/12/27 19:57:36 GMT FROM: Francesco Longo at U of Trieste,INFN Trieste A. Ursi (INAF/IAPS), F. Verrecchia, C. Pittori (SSDC, and INAF/OAR), F. Longo (Univ. Trieste and INFN Trieste), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata), A. Argan, M. Cardillo, C. Casentini, Y.Evangelista, G. Piano (INAF/IAPS), F. Lucarelli (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), A. Giuliani (INAF/IASF-Mi), report on behalf of the AGILE Team: The AGILE Mini-CALorimeter (MCAL) detected a short burst at T0 = 2020-12-27 15:14:07.40 +/- 0.01 s (UTC) detected also by Fermi/GBM (trigger 630774852). The event lasted about 0.10 s and released a total number of ~480 counts in the detector (in the 0.4-100 MeV energy range), above an average background rate of 676 counts / s. The light curve shows a single sharp peak and can be found at http://www.agilescienceapp.it/notices/GRB_071058_536166847.405605.png. The AGILE-MCAL detector is a CsI detector with a 4 pi FoV, sensitive in the energy range 0.4-100 MeV. 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.