GRB 230308A: AGILE/MCAL detection
Abstract
The AGILE satellite detected the short GRB 2300308A at T0 = 2023-03-08 13:32:27.400 (UTC), reported by Fermi/GBM (GCN #33420) and BALROG (GCN #33421). The burst is clearly visible in the AGILE scientific ratemeters of the MiniCALorimeter (MCAL; 0.4-100 MeV), and in all the panels of the AntiCoincidence detectors (AC Top, 50-200 keV, ACLat, 80-200 keV). The event lasted about 1 s and it released a total number of 1166 counts in the MCAL detector (above a background rate of 576 Hz), and 7526 counts in the AC Top detector (above a background rate of 3445 Hz). The AGILE ratemeters light curves can be found at: http://www.agilescienceapp.it/notices/GRB230308A_AGILE_RM_ND.png . The event also triggered a high-time resolution MCAL data acquisition, from T0 to T0+12 s (UTC), and released 1484 counts in the detector, above a background rate of 590 Hz. The MCAL light curve can be found at: http://www.agilescienceapp.it/notices/GRB230308A_082579_605367147.400000.png . At the T0 the event was 133 deg off-axis. 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
- Publication:
-
GRB Coordinates Network
- Pub Date:
- March 2023
- Bibcode:
- 2023GCN.33435....1C