GCN Circular 32129

A. Ursi, G. Piano (INAF/IAPS), 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. Foffano, E. Menegoni
(INAF/IAPS), F. Lucarelli (SSDC, and INAF/OAR), A. Bulgarelli, A. Di Piano,
V. Fioretti, F. Fuschino, N. Parmiggiani (INAF/OAS-Bologna), M. Romani
(INAF/OA-Brera), M. Marisaldi (INAF/OAS-Bologna, and Bergen University), M.
Pilia, A. Trois (INAF/OA-Cagliari), I. Donnarumma (ASI), A. Giuliani
(INAF/IASF-Mi), F. Longo (Univ. Trieste and INFN Trieste), and P. Tempesta
(TeleSpazio), report on behalf of the AGILE Team:

The AGILE satellite detected a burst at T0 = 2022-05-27 09:17:14.55 (UTC).
The event is clearly visible in the AGILE scientific ratemeters of the
SuperAGILE (SA; 20-60 keV), MiniCALorimeter (MCAL; 0.4-100 MeV), and
AntiCoincidence (AC; 50-200 keV) detectors. The event lasted about 15 s and
it released a total number of 1860 counts in the SA detector (above a
background rate of 50 Hz), 27875 counts in the MCAL detector (above a
background rate of 1380 Hz), and 67515 counts in the AC detector (above a
background rate of 3470 Hz). The AGILE ratemeter light curves can be found
at http://www.agilescienceapp.it/notices/GRB220527A_AGILE_RM.png .

The event also triggered a high time resolution MCAL data acquisition,
where it released 12500 counts in the detector, above a background rate of
630 Hz. We notice that most of the signal is revealed in the E < 1.4 MeV
energy channels. The MCAL light curve can be found at
http://www.agilescienceapp.it/notices/GRB220527A_078464_580727834.552109.png
.

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.