{
  "bibcode": "2023GCN.33343....1C",
  "body": "C. Casentini (INAF/IAPS), F. Verrecchia (SSDC, and INAF/OAR), F. Longo\n(Uni. Trieste, INFN Trieste) M. Tavani\n(INAF/IAPS, and Univ. Roma Tor Vergata), C. Pittori, F. Lucarelli,\nA. Argan, M. Cardillo, Y. Evangelista, L. Foffano, G. Piano\n(INAF/IAPS), A. Addis, L. Baroncelli, A. Bulgarelli, A. Di Piano,\nV. Fioretti, G. Panebianco, N. Parmiggiani (INAF/OAS-Bologna), M. Romani\n(INAF/OA-Brera), M. Marisaldi (INAF/OAS-Bologna, Bergen University),\nM. Pilia, A. Trois (INAF/OA Cagliari), I. Donnarumma, E. Menegoni,\nA.Ursi (ASI), A. Giuliani (INAF/IASF-Mi) and P. Tempesta (TeleSpazio),\nreport on behalf of the AGILE Team:\n\nThe AGILE satellite detected the short GRB 230217A at\nT0 = 2023-02-17 21:53:10.87 (UTC), reported by Fermi/GBM (GCN #33338) and\nSwift BAT (GCN #33339).\n\nThe burst is clearly visible in the AGILE scientific ratemeters of the\nMiniCALorimeter (MCAL; 0.4-100 MeV), and in all the panels of the\nAntiCoincidence detectors (AC Top, 50-200 keV; AC Lat, 80-200 keV).\nThe event lasted about 2 s and it released a total number of 7554 counts\nin the MCAL detector (above a background rate of 529 Hz), and 38605 counts\nin the AC Top detector (above a background rate of 3530 Hz).\nThe AGILE ratemeters light curves can be found at:\nhttp://www.agilescienceapp.it/notices/GRB230217A_AGILE_RM_ND.png .\n\nThe event also triggered a high-time resolution MCAL data acquisition,\nfrom T0-0.7 s to T0+5.8 s (UTC), and released 2515 counts in the detector,\nabove a background rate of 776 Hz. The MCAL light curve can be found at:\nhttp://www.agilescienceapp.it/notices/GRB230217A_082311_603755590.000000.png\n.\n\nThe time-integrated spectrum of the burst between T0-1s and T0+1s, fitted\nin the energy range 0.4-10 MeV with a p.l. with ph. ind. = -2.12 (+/-0.08)\nresulting in a reduced chi-squared of 0.92 (48 d.o.f.)\nand a fluence of 4.05e-06 ergs/cm^2 (90% confidence level),\nin the same energy range.\n\nAt the T0, the event was 59 deg off-axis.\nAdditional analysis of AGILE data is in progress.\nAutomatic MCAL GRB alert Notices can be found at:\nhttps://gcn.gsfc.nasa.gov/agile_mcal.html",
  "circularId": 33343,
  "createdOn": 1676716894000,
  "email": "claudio.casentini@inaf.it",
  "subject": "GRB 230217A: AGILE/MCAL detection",
  "submitter": "Claudio Casentini at INAF-IAPS  <claudio.casentini@inaf.it>",
  "eventId": "GRB 230217A"
}