{
  "bibcode": "2019GCN.26548....1L",
  "body": "F. Longo (UniTS and INFN Trieste),  M. Pilia (INAF/OA-Cagliari),\nM. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata),\nM. Cardillo, C. Casentini, G. Piano, A. Ursi (INAF/IAPS),\nF. Lucarelli, C. Pittori, F. Verrecchia (SSDC, and INAF/OAR),\nA. Bulgarelli, V. Fioretti, N. Parmiggiani (INAF/OAS-Bologna),\nreport on behalf of the AGILE Team:\n\nIn response to the LIGO-Virgo GW event S191222n at T0 = 2019-12-22\n03:35:37.119 (UT) a preliminary analysis of the AGILE exposure at T0\nshows that the Gamma-Ray Imaging Detector (GRID) exposure covered\nthe 38% of the 90% c.l. localization region (LR) (19% of the LR was\nocculted by Earth).\n\nWe performed an analysis of the GRID data in the energy range 50 MeV -\n10 GeV on T0, where good exposure of the S191222n 90% c.l. LR\nwas available.\n\nNo candidate gamma-ray transient was detected.\n\nThe following preliminary GRID values of 3-sigma upper limit (UL) are obtained:\nfrom 7.8e-07 to 4e-06 erg cm^-2 s^-1, with exposure of about 38% of the LR\nover the time interval ( T0 -2s ; T0 + 2s );\nfrom 3.2e-07 to 1.6e-06 erg cm^-2 s^-1, with exposure of about 38% of\nthe LR over the time interval ( T0s ; T0 + 10s );\nfrom 3.4e-08 to 3.5e-06 erg cm^-2 s^-1, with exposure of about 42% of\nthe LR over the time interval ( T0s ; T0 + 100s );\n\nThese measurements were obtained with AGILE observing a large portion of\nthe sky in spinning mode. Additional analysis of AGILE data is in progress.",
  "circularId": 26548,
  "createdOn": 1577002650000,
  "email": "franzlongo1969@gmail.com",
  "subject": "LIGO/Virgo S191222n: upper limits from AGILE-GRID observations",
  "submitter": "Francesco Longo at U of Trieste,INFN Trieste  <franzlongo1969@gmail.com>",
  "eventId": "LIGO/Virgo S191222n"
}