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GCN Circular 35244

Subject
GRB 231129C: AGILE detection
Date
2023-12-01T11:28:51Z (6 months ago)
From
Gabriele Panebianco <gabriele.panebianco@inaf.it>
Via
Web form
G. Panebianco (Univ. Bologna - INAF/OAS Bologna), A. Bulgarelli (INAF/OAS Bologna),
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, G. Piano (INAF/IAPS),
L. Baroncelli, A. Ciabattoni, A. Di Piano, V. Fioretti, N. Parmiggiani (INAF/OAS-Bologna),
F. Lucarelli (SSDC, and INAF/OAR),  M. Marisaldi (INAF/OAS-Bologna, and Bergen University),
M. Pilia, A. Trois (INAF/OA-Cagliari), 
F. Longo (Univ. Trieste, and INFN Trieste), A. Ursi (ASI and INAF/IAPS),
I. Donnarumma, E. Menegoni (ASI),  A. Giuliani (INAF/IASF-Mi),
P.W. Cattaneo (INFN Pavia), F.  Cutrona (Univ. Milano Bicocca) and P. Tempesta (TeleSpazio) 
report on behalf of the AGILE Team:

The AGILE satellite detected the bright and long GRB 231129C at T0 = 2023-11-29 19:10:18 s (UTC),
reported by Fermi (GCNs #35217, #35221, #35227, #35238), BALROG (GCN #35222),
MAXI/GSC (GCN #35223), Swift (GCNs #35225, #35234, #35242), CALET (GCN #35228),
AstroSAT CZTI (GCN #35230), GECAM-B (GCN #35231), Glowbug (GCN #35235),
GRBAlpha (GCN #35236), MASTER OT (#35240).

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 pulse lasted about 10 s and it released a total number
of 7648 counts in the MCAL detector (above a background rate of 525 Hz)
and 49403 counts in the AC-Top detector (above a background rate of 2900 Hz).

The AGILE ratemeters light curves can be found at
http://www.agilescienceapp.it/notices/GRB231129C_AGILE_RM_ND.png .

At the detection time the GRB location was occulted by the Earth for the AGILE GRID instrument.

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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