{
  "bibcode": "2019GCN.26338....1P",
  "body": "G. Piano (INAF/IAPS), F. Longo (Univ. Trieste, and INFN Trieste), M. Tavani\n(INAF/IAPS, and Univ. Roma Tor Vergata), M. Cardillo, C. Casentini, A. Ursi\n(INAF/IAPS), F. Lucarelli, C. Pittori, F. Verrecchia (SSDC, and INAF/OAR),\nA. Bulgarelli, V. Fioretti, N. Parmiggiani (INAF/OAS-Bologna), M. Pilia\n(INAF/OA-Cagliari) report on behalf of the AGILE Team:\n\nIn response to the LIGO-Virgo GW event S191204r at T0 = 2019-12-04\n17:15:26.092 UTC a preliminary analysis of the AGILE exposure at T0 shows\nthat the Gamma-Ray Imaging Detector (GRID) exposure covered less than 10%\nof the 90% c.l. localization region (LR) (16% of 90% c.l. localization\nregion (LR) is occulted by Earth).\n\nWe performed an analysis of the GRID data in the energy range 50 MeV - 10\nGeV on T0, where good exposure of the S191204r 90% c.l. LR was available.\n\nNo candidate gamma-ray transient was detected.\n\nThe following preliminary GRID values of 3-sigma upper limit (UL) are\nobtained:\nfrom 3.5e-08 to 9.0e-07 erg cm^-2 s^-1, with exposure of about 65% of the\nLR over the time interval (T0; T0 + 100 s);\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": 26338,
  "createdOn": 1575489782000,
  "email": "giovanni.piano@inaf.it",
  "subject": "LIGO/Virgo S191204r: upper limits from AGILE-GRID observations",
  "submitter": "Giovanni Piano at INAF-IAPS  <giovanni.piano@inaf.it>",
  "eventId": "LIGO/Virgo S191204r"
}