he Gamma-Ray Imaging Detector (GRID) of AGILE detected gamma-ray transient emission consistent with the long GRB 220624A reported by Fermi/GBM (GCN #32256) at T0 = 2022-06-24 02:58:35 s (UTC), as already reported in Verrecchia et al. GCN #32261 and also detected by AGILE/MCAL (Ursi et al., GCN #32259). An improved localization has been reported by the IPN (Kozyrev et al. GCN #32265). A refined AGILE/GRID data analysis in the energy range 30 MeV - 10 GeV shows a detection with a statistical significance of about 10 sigma over a time integration of 20 s starting at the T0 of GRB 220624A, at a sky position with Galactic coordinates l=260 deg, b=75 deg, with and an error radius of 4 deg (90% statistical + systematic error; R.A.= 182 deg, Decl.= 16 deg (J2000)). The GRID error circle includes the IPN position. During the 20s integration, we detected a total of 41 events (3 background events estimated through a Li&Ma analysis), 17 events at energies above 100 MeV, and 3 events above 1 GeV. These measurements were obtained with AGILE observing a large portion of the sky in spinning mode. Additional analysis of AGILE data is in progress....
GRB 220624A: AGILE/GRID refined analysis / Verrecchia, F.; Ursi, A.; Giuliani, A.; Tavani, M.; Longo, F.; Foffano, L.; Lucarelli, F.; Pittori, C.; Romani, M.; Piano, G.; Argan, A.; Cardillo, M.; Casentini, C.; Evangelista, Y.; Menegoni, E.; Bulgarelli, A.; di Piano, A.; Fioretti, V.; Parmiggiani, N.; Marisaldi, M.; Pilia, M.; Trois, A.; Donnarumma, I.; Tempesta, P.; Agile, Team. - (2022).
GRB 220624A: AGILE/GRID refined analysis
di Piano, A.;
2022
Abstract
he Gamma-Ray Imaging Detector (GRID) of AGILE detected gamma-ray transient emission consistent with the long GRB 220624A reported by Fermi/GBM (GCN #32256) at T0 = 2022-06-24 02:58:35 s (UTC), as already reported in Verrecchia et al. GCN #32261 and also detected by AGILE/MCAL (Ursi et al., GCN #32259). An improved localization has been reported by the IPN (Kozyrev et al. GCN #32265). A refined AGILE/GRID data analysis in the energy range 30 MeV - 10 GeV shows a detection with a statistical significance of about 10 sigma over a time integration of 20 s starting at the T0 of GRB 220624A, at a sky position with Galactic coordinates l=260 deg, b=75 deg, with and an error radius of 4 deg (90% statistical + systematic error; R.A.= 182 deg, Decl.= 16 deg (J2000)). The GRID error circle includes the IPN position. During the 20s integration, we detected a total of 41 events (3 background events estimated through a Li&Ma analysis), 17 events at energies above 100 MeV, and 3 events above 1 GeV. These measurements were obtained with AGILE observing a large portion of the sky in spinning mode. Additional analysis of AGILE data is in progress....
Pubblicazioni consigliate
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris
