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GCN Circular 32825

Subject
GRB 221023A: AGILE detection of a burst
Date
2022-10-24T07:33:58Z (2 years ago)
From
Alessandro Ursi at INAF/IAPS <alessandro.ursi@gmail.com>
A. Ursi (INAF/IAPS), C. Pittori, F. Verrecchia (SSDC, and INAF/OAR), C.
Casentini (INAF/IAPS), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata),
A. Argan, M. Cardillo, Y. Evangelista, L. Foffano, E. Menegoni, G. Piano
(INAF/IAPS), A. Bulgarelli, A. Di Piano, V. Fioretti, G. Panebianco, N.
Parmiggiani (INAF/OAS-Bologna), F. Lucarelli (SSDC, and INAF/OAR), 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 = 2022-10-23 20:41:34 s (UTC).
The burst is clearly visible in the AGILE scientific ratemeters of the
MiniCALorimeter (MCAL; 0.4-100 MeV) and AntiCoincidence (AC; 50-200 keV)
detectors. The event lasted about 35 s and it released a total number of
115660 counts in the MCAL detector (above a background rate of 1120 Hz),
and 251030 counts in the AC detector (above a background rate of 3010 Hz).
The AGILE ratemeters light curves can be found at
http://www.agilescienceapp.it/notices/GRB221023A_AGILE_RM.png .

The event also triggered a partial high time resolution MCAL data
acquisition, from T0+23.34 s to T0+33.35 s (UTC), and released 18196 counts
in the detector, above a background rate of 590 Hz. The MCAL light curve
can be found at
http://www.agilescienceapp.it/notices/GRB221023A_080618_593642494.000000.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.
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