TITLE: GCN CIRCULAR NUMBER: 27437 SUBJECT: GRB 200325A: AGILE/MCAL observations DATE: 20/03/25 11:17:45 GMT FROM: Alessandro Ursi at INAF/IAPS A. Ursi (INAF/IAPS), F. Verrecchia (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, C. Pittori, (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 satellite detected the short burst GRB 200325A reported by Fermi/GBM (GCN #27434), that also triggered the automatic AGILE Mini-CALorimeter (MCAL) GRB alert Notice (ID 512191111), published at: https://gcn.gsfc.nasa.gov/agile_mcal.html. The event was detected by MCAL at T0 = 2020-03-25 03:18:31.71 +/- 0.01 s (UTC), lasting ~1.2 s and releasing a total number of ~1000 counts in the detector, above a background rate of ~580 Hz. The MCAL light curve can be found at: http://www.agilescienceapp.it/notices/GRB_067078_512191111.714274.png. The time-integrated spectrum of the burst in 1.2 s can be fitted in the energy range 0.4-10 MeV with a single power-law with ph.ind. = 1.72 -0.17/+0.20, resulting in a reduced chi-squared of 1.03 (36 d.o.f.). The burst fluence in the same energy range and time interval is 3.62e-06 erg/cm^2 (90% confidence level). The event localization according to Fermi/GBM, RA = 22.1, Dec = -29.1 (J2000; GCN #27434), is within the AGILE Gamma-Ray Imaging Detector (GRID) Field-of-View, but no detection is obtained in the integrations (T0;T0+5s) and (T0;T0+10s). 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.