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GCN Circular 33604

Subject
GRB 230410B: AGILE detection of a burst
Date
2023-04-11T14:47:31Z (a year ago)
From
Francesco Verrecchia at SSDC,INAF-OAR <francesco.verrecchia@ssdc.asi.it>
F. Verrecchia (SSDC, and INAF/OAR), C. Casentini (INAF/IAPS), M. Tavani
(INAF/IAPS and Uni. Roma Tor Vergata), C. Pittori, F. Lucarelli (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 Mini-CALorimeter (MCAL) detected a short burst at
T0 = 2023-04-10 04:31:20.09 �� 0.01 s (UTC).
The event lasted 0.13 s and released a total number of 227 counts in the
MCAL detector (in the 0.4-100 MeV energy range), above a background rate
of 537 Hz. The MCAL light curve can be found at:
https://tools.ssdc.asi.it/ImgView/Agile/GRB230410B_083053_60818588008894555 
.

The burst is also clearly visible in the AGILE scientific ratemeters of
the MCAL detector (0.4-100 MeV), and marginally in that of the
AntiCoincidence (AC; 50-200 keV) detectors.

The event lasted about 1 s and it released a total number of 1690 counts
in the MCAL detector (above a background rate of 1109 Hz), 7078
counts in AC-Top detector (above a background rate of 3263 Hz), and
7271 counts in AC-Lat1 detector (above a background rate of 3171 Hz).
The AGILE ratemeters light curves can be found at
https://tools.ssdc.asi.it/ImgView/Agile/GRB230410B_AGILE_RM_D357 .

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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