GRB 230204B: AGILE detection
Abstract
The AGILE satellite detected the bright and long GRB 230204B at T0 = 2023-02-04 21:44:25.2 s (UTC), reported by MAXI/GSC, Swift/BAT-GUANO, AstroSAT CZTI, GIT (GCNs #33265, #33267, #33268 and #33269), CALET trig 1359582171, Fermi/GBM trig 697239872 and INTEGRAL trig 10188. The burst is clearly visible in the AGILE scientific ratemeters of the MiniCALorimeter (MCAL; 0.4-100 MeV) and AntiCoincidence (AC; 50-200 keV) detectors. The event lasted about 145 s and it released a total number of 170125 counts in the MCAL detector (above a background rate of 1418 Hz), and 468843 counts in the AC detector (above a background rate of 3197 Hz). The AGILE ratemeters light curves can be found at http://www.agilescienceapp.it/notices/GRB230204B_AGILE_RM_A.png . The event also triggered a partial high-time resolution MCAL data acquisition, from T0-20 s to T0+25 s (UTC). The multi-peaked MCAL light curve can be found at http://www.agilescienceapp.it/notices/GRB230204B_082123_602631919.000000.png . At the T0, the event was 72 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:
- February 2023
- Bibcode:
- 2023GCN.33272....1C