Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 32261

GRB 220624A: AGILE/GRID analysis
2022-06-24T17:36:04Z (2 years ago)
Francesco Verrecchia at SSDC,INAF-OAR <>
F. Verrecchia, A. Ursi (INAF/IAPS), A. Giuliani (INAF/IASF-Mi), L. Foffano
(INAF/IAPS), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata), F. Longo
(Univ. Trieste and INFN Trieste), F. Lucarelli, C. Pittori (SSDC, and
INAF/OAR), G. Piano, A. Argan, M. Cardillo, Y. Evangelista, E. Menegoni
(INAF/IAPS), A. Bulgarelli, A. Di Piano, V. Fioretti, N. Parmiggiani
(INAF/OAS), M. Marisaldi (INAF/OAS, and Bergen University), M. Pilia,
A. Trois (INAF/OA-Cagliari), I. Donnarumma (ASI), report on behalf of
the AGILE Team:

The Gamma-Ray Imaging Detector (GRID) of AGILE detected a gamma-ray 
temporally coincident with the long�� GRB 220624A reported by Fermi/GBM in
GCN #32256 and also detected by AGILE/MCAL (Ursi et al., GCN #32259).

A preliminary GRID analysis shows a detection with a statistical 
above 8 sigma over a time integration of 20 s starting from the T0 of GRB
220624A, at a sky position compatible with that of the GRB.
We obtained 25 events 2 of which are notably above 1 GeV.

The GRB position was about 30 deg off-axis from the GRID boresight.

These measurements were obtained with AGILE observing a large portion of
the sky in spinning mode. Additional analysis of AGILE data is in progress.
Looking for U.S. government information and services? Visit