{
  "bibcode": "2023GCN.33444....1C",
  "body": "C. Casentini (INAF/IAPS), F. Verrecchia (SSDC, and INAF/OAR),\nA.Ursi (ASI), C. Pittori (SSDC, and INAF/OAR),\nM. Tavani (INAF/IAPS and Uni. Roma Tor Vergata),\nF. Lucarelli (SSDC, and INAF/OAR), A. Argan, M. Cardillo, Y. Evangelista,\nL. Foffano, G. Piano (INAF/IAPS), A. Addis, L. Baroncelli, A. Bulgarelli,\nA. Di Piano, V. Fioretti, G.Panebianco, N. Parmiggiani (INAF/OAS-Bologna),\nM. Romani (INAF/OA-Brera), M. Marisaldi (INAF/OAS-Bologna, Bergen\nUniversity),\nM. Pilia, A. Trois (INAF/OA Cagliari), I. Donnarumma, E. Menegoni,\nA. Giuliani (INAF/IASF-Mi) and P. Tempesta (TeleSpazio),\nreport on behalf of the AGILE Team:\n\nWe carried out further analysis of the AGILE/MCAL data of GRB 230307A\n(GCNs #33405, #33406, #33407, #33410, #33411, #33412, #33413, #33414,\n#33415, #33416, #33418, #33419, #33424, #33425, #33427, #33428, #33429\n#33430, #33431, #33434, #33437, #33438, #33439, 33442, 33443)\n\nThe burst released 229697 counts in the detector in 18s, above a background\nrate of 545 Hz.\n\nThe spectral analysis shows a clear component up to 8 MeV.\n\nThe time-integrated spectrum of the burst can be fitted in the energy range\n0.6-6.5 MeV with a Band model with alpha = -0.43 (+/-0.06),\nbeta = -5.1 (+/-0.7), peak energy Epeak = 1260 keV (+/- 42 keV).\nThe fit results in a reduced chi-squared of 1.607 (34 d.o.f.) and a\nfluence of 1.3e-03 erg/cm^2, in the same energy range.\n\nMCAL spectrum in the selected 18 s time interval can be found at:\nhttp://www.agilescienceapp.it/notices/GRB230307A_AGILE-MCAL_spectral_analysis.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.",
  "circularId": 33444,
  "createdOn": 1678390892000,
  "email": "claudio.casentini@inaf.it",
  "subject": "GRB 230307A: AGILE/MCAL analysis",
  "submitter": "Claudio Casentini at INAF-IAPS  <claudio.casentini@inaf.it>",
  "eventId": "GRB 230307A"
}