GRB 210511B: AGILE detection

Ursi, A.; Fioretti, V.; Tavani, M.; Argan, A.; Cardillo, M.; Casentini, C.; Evangelista, Y.; Piano, G.; Lucarelli, F.; Pittori, C.; Verrecchia, F.; Bulgarelli, A.; di Piano, A.; Fuschino, F.; Parmiggiani, N.; Marisaldi, M.; Pilia, M.; Trois, A.; Donnarumma, I.; Longo, F.; Giuliani, A.; Team, Agile

The AGILE satellite detected the long GRB 210511B at T0 = 2021-05-11 11:26:37 s (UTC), reported by Fermi/GBM (GCN #29988) and GECAM (GCN #29990). The burst is 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 ~12 s and released a total number of 2120 counts in the SA detector (above a background rate of 64 Hz), 15630 counts in the MCAL detector (above a background rate of 1260 Hz), and 48375 counts in the AC detector (above a background rate of 3865 Hz). The AGILE ratemeter light curves can be found at http://www.agilescienceapp.it/notices/GRB210511_AGILE_RM.png . Additional analysis of AGILE data is in progress....

GRB 210511B: AGILE detection / Ursi, A.; Fioretti, V.; Tavani, M.; Argan, A.; Cardillo, M.; Casentini, C.; Evangelista, Y.; Piano, G.; Lucarelli, F.; Pittori, C.; Verrecchia, F.; Bulgarelli, A.; di Piano, A.; Fuschino, F.; Parmiggiani, N.; Marisaldi, M.; Pilia, M.; Trois, A.; Donnarumma, I.; Longo, F.; Giuliani, A.; Agile, Team. - (2021).