//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 21689 SUBJECT: GRB 170825A: AGILE/MCAL Detection DATE: 17/08/25 12:23:09 GMT FROM: Francesco Verrecchia at ASDC M. Cardillo, A.Ursi (INAF/IAPS), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata), N. Parmiggiani (INAF/IASF-Bo), F. Longo (Univ. Trieste and INFN Trieste), F. Verrecchia (SSDC and INAF/OAR), A. Bulgarelli (INAF/IASF-Bo), C. Pittori (SSDC and INAF/OAR), M. Pilia (INAF/OA-Cagliari), G. Piano (INAF/IAPS), I. Donnarumma (ASI), G. Minervini, A. Argan, Y. Evangelista (INAF/IAPS), F. Lucarelli (SSDC and INAF/OAR), A. Zoli, V. Fioretti, F. Fuschino (INAF/IASF-Bo), A. Trois (INAF/OA-Cagliari) M. Marisaldi (INAF/IASF-Bo and Bergen University), A. Giuliani (INAF/IASF-Mi), report on behalf of the AGILE Team: The AGILE Mini-CALorimeter (MCAL) detected a short burst at T0 = 2017-08-25 02:19:49 UTC included in the acquisition (following an internal trigger) started at T1=02:21:27 UTC and ended at 02:21:34 UTC. The MCAL light curve shows a sharp single peak, that lasted about 32 ms and released a total number of ~48 counts at E>400 keV in the detector, above an average background rate of 19 counts/32ms. The AGILE-MCAL detector has a full solid angle acceptance, and is operational in the range 0.4 - 100 MeV.