{
  "bibcode": "2021GCN.30195....1U",
  "body": "A. Ursi (INAF/IAPS), F. Verrecchia (SSDC, and INAF/OAR), F. Longo (Univ.\nTrieste and INFN Trieste), M. Tavani (INAF/IAPS, and Univ. Roma Tor\nVergata), A. Argan, M. Cardillo, C. Casentini, Y. Evangelista, G. Piano\n(INAF/IAPS), F. Lucarelli, C. Pittori,  (SSDC, and INAF/OAR), A.\nBulgarelli, 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), report\non behalf of the AGILE Team:\n\nThe AGILE satellite detected the long GRB 210610B at T0 = 2021-06-10\n19:51:32 s (UTC), reported by Swift (GCNs #30170, #30189).\n\nThe burst is clearly visible in the AGILE scientific ratemeters of the\nSuperAGILE (SA; 20-60 keV), MiniCALorimeter (MCAL; 0.4-100 MeV), and\nAntiCoincidence (AC; 50-200 keV) detectors. The event lasted about 30 s and\nit released a total number of 2340 counts in the SA detector (above a\nbackground rate of 65 Hz), 37190 counts in the MCAL detector (above a\nbackground rate of 1280 Hz), and 110300 counts in the AC detector (above a\nbackground rate of 3800 Hz). The AGILE ratemeter light curves can be found\nat http://www.agilescienceapp.it/notices/GRB210610B_AGILE_RM.png .\n\nThe event also triggered a partial high time resolution MCAL data\nacquisition, from T1 = 2021-06-10 19:51:22.88 s +/- 0.01 (UTC) to T2 =\n2021-06-10 19:51:40.27 +/- 0.01 s (UTC), and released 11740 counts in the\ndetector, above a background rate of 525 Hz. The MCAL light curve can be\nfound at:\nhttp://www.agilescienceapp.it/notices/073428_GRB_MCAL_550439491.834857.png\n. The time-integrated spectrum between T1 and T2 can be fitted in the\nenergy range 0.4-5 MeV with a power law model with ph.ind. -2.9\n-0.33/+0.40. The fit results in a reduced chi-squared of 0.95 (36 d.o.f.)\nand a fluence of 8.06e-06 ergs/cm^2 (90% confidence level), in the same\nenergy range.\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": 30195,
  "createdOn": 1623402572000,
  "email": "alessandro.ursi@gmail.com",
  "subject": "GRB 210610B: AGILE detection",
  "submitter": "Alessandro Ursi at INAF/IAPS  <alessandro.ursi@gmail.com>",
  "eventId": "GRB 210610B"
}