On its 15th birthday, the AGILE satellite detected the long GRB 220423A at T0 = 2022-04-23 14:14:14 (UTC), reported by INTEGRAL SPI-ACS (trigger no.9870) and CALET (trigger no.1334758343). The burst 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 20 s and it released a total number of 2150 counts in the SA detector (above a background rate of 75 Hz), 36645 counts in the MCAL detector (above a background rate of 1410 Hz), and 81820 counts in the AC detector (above a background rate of 3220 Hz). The AGILE ratemeter light curves can be found at http://www.agilescienceapp.it/notices/GRB220423A_AGILE_RM.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....
GRB 220423A: AGILE detection / Ursi, A., Pittori, C., Verrecchia, F., Tavani, M., Argan, A., Cardillo, M., Casentini, C., Evangelista, Y., Menegoni, E., Foffano, L., Piano, G., Lucarelli, F., Bulgarelli, A., Di Piano, A., Fioretti, V., Fuschino, F., Parmiggiani, N., Marisaldi, M., Pilia, M., Trois, A., et al.. - (2022).
GRB 220423A: AGILE detection
di Piano, A.;
2022
Abstract
On its 15th birthday, the AGILE satellite detected the long GRB 220423A at T0 = 2022-04-23 14:14:14 (UTC), reported by INTEGRAL SPI-ACS (trigger no.9870) and CALET (trigger no.1334758343). The burst 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 20 s and it released a total number of 2150 counts in the SA detector (above a background rate of 75 Hz), 36645 counts in the MCAL detector (above a background rate of 1410 Hz), and 81820 counts in the AC detector (above a background rate of 3220 Hz). The AGILE ratemeter light curves can be found at http://www.agilescienceapp.it/notices/GRB220423A_AGILE_RM.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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