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GCN Circular 33555

Subject
GRB 230402A: AGILE detection
Date
2023-04-02T19:27:16Z (a year ago)
From
Claudio Casentini at INAF-IAPS <claudio.casentini@inaf.it>
C. Casentini (INAF/IAPS), C. Pittori (SSDC, and INAF/OAR),
M. Tavani (INAF/IAPS and Uni. Roma Tor Vergata), F. Lucarelli,
F. Verrecchia(SSDC, and INAF/OAR), A. Argan, M. Cardillo, Y. Evangelista,
L. Foffano, G. Piano (INAF/IAPS), A. Addis, L. Baroncelli, A. Bulgarelli,
A. Di Piano, V. Fioretti, G.Panebianco, N. Parmiggiani (INAF/OAS-Bologna),
M. Romani (INAF/OA-Brera), M. Marisaldi (INAF/OAS-Bologna, Bergen
University),
M. Pilia, A. Trois (INAF/OA Cagliari), I. Donnarumma, E. Menegoni, A.Ursi
(ASI),
A. Giuliani (INAF/IASF-Mi) and P. Tempesta (TeleSpazio),
report on behalf of the AGILE Team:

The AGILE satellite detected the GRB 230402A at T0 = 2023-04-02 07:32:35 s
(UTC),
reported by Fermi GBM (GCN #33553).

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 6 s and it released a total number of 5504 counts in
the MCAL
detector (above a background rate of 576 Hz), and 23987 counts in AC
detector
(above a background rate of 2949 Hz). The AGILE ratemeters light curves can
be found
at http://www.agilescienceapp.it/notices/GRB230402A_AGILE_RM_ND.png .

At the T0, the event was 81 deg off-axis.

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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