{
  "bibcode": "2022GCN.31784....1U",
  "body": "A. Ursi (INAF/IAPS), M. Romani (INAF/OA-Brera), C. Pittori, F. Verrecchia\n(SSDC, and INAF/OAR), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata), A.\nArgan, M. Cardillo, C. Casentini, Y. Evangelista, L. Foffano, E. Menegoni,\nG. Piano (INAF/IAPS), F. Lucarelli (SSDC, and INAF/OAR), A. Bulgarelli, A.\nDi Piano, V. Fioretti, F. Fuschino, N. Parmiggiani (INAF/OAS-Bologna), M.\nMarisaldi (INAF/OAS-Bologna, and Bergen University), M. Pilia, A. Trois\n(INAF/OA-Cagliari), I. Donnarumma (ASI), A. Giuliani (INAF/IASF-Mi), F.\nLongo (Univ. Trieste and INFN Trieste), and P. Tempesta (TeleSpazio),\nreport on behalf of the AGILE Team:\n\nThe AGILE MiniCALorimeter (MCAL; 0.4-100 MeV) detected the short GRB\n220323A at T0 = 2022-03-23 12:10:11 (UTC), reported by Fermi GBM (GCN\n#31782).\n\nThe event lasted 0.35 s and released 295 counts in the detector, above a\nbackground rate of 630 Hz. The time-integrated spectrum of the burst can be\nfitted in the energy range 0.4-2 MeV with a power-law with ph.ind = 2.44\n(-0.70/+1.13), resulting in a reduced chi-squared of 1.06 (21 d.o.f.) and a\nfluence of 5.6e-07 erg/cm^2 (90% confidence level), in the same energy\nrange. The MCAL light curve can be found at\nhttp://www.agilescienceapp.it/notices/077531_GRB_575122215.552228.png . At\nthe T0, the event was 134 deg off-axis.\n\nThe burst is also clearly visible in the AGILE scientific ratemeters of the\nMCAL detector, where it released a total number of 1550 counts (above a\nbackground rate of 1230 Hz). The AGILE MCAL ratemeters light curve can be\nfound at http://www.agilescienceapp.it/notices/GRB220323A_AGILE_RM.png .\n\nAdditional analysis of AGILE data is in progress. Automatic MCAL GRB alert\nNotices can be found at: https://gcn.gsfc.nasa.gov/agile_mcal.html. Please\nnote that in the MCAL notice #575122215 the T0 was affected by a temporal\nshift of about +4.0 sec due to episodic automated ground software problems\nwhich are then corrected offline.",
  "circularId": 31784,
  "createdOn": 1648048490000,
  "email": "alessandro.ursi@gmail.com",
  "subject": "GRB 220323A: AGILE/MCAL detection",
  "submitter": "Alessandro Ursi at INAF/IAPS  <alessandro.ursi@gmail.com>",
  "eventId": "GRB 220323A"
}