{
  "bibcode": "2019GCN.24143....1C",
  "body": "M. Cardillo (INAF/IAPS), F. Verrecchia (SSDC, and INAF/OAR), A. Ursi \n(INAF/IAPS), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata), C. \nCasentini, G. Piano (INAF/IAPS), F. Lucarelli, C. Pittori (SSDC, and \nINAF/OAR), A. Bulgarelli, N. Parmiggiani (INAF/OAS-Bologna), M. Pilia \n(INAF/OA-Cagliari), F. Longo (Univ. Trieste, and INFN Trieste), report \non behalf of the AGILE Team:\n\nIn response to the LIGO-Virgo GW event S190421ar T0 = 2019-04-21 \n21:38:56 (UTC; GCN #24141), analysis of AGILE data shows that the \nsatellite at T0 was in the South Atlantic Anomaly (SAA). Scientific \ntelemetry was inhibited during the time interval (T0 -600 s; T0 + 400 s).\n\nWe performed a preliminary analysis of the AGILE Gamma-Ray Imaging \nDetector (GRID) in the first interval available after the SAA, between \nT0 +450s and T0+550s. In this time interval, the GRID exposure covered \nnearly 55% of the LIGO/Virgo localization region (LR), observed at \noff-axis angles between 15 deg and 60 deg.\n\nAn analysis of the data in the energy range 50 MeV - 10 GeV in this \nintegration time was performed and preliminary 3-sigma upper limits (UL) \nvalues within the accessible LIGO/Virgo LR are:\nfrom 4.9e-8 erg cm^-2 s^-1 to 3.0e-7 erg cm^-2 s^-1 for integration time \nof 100s.\n\nThese measurements were obtained with AGILE observing a large portion of \nthe sky in spinning mode.",
  "circularId": 24143,
  "createdOn": 1555957844000,
  "email": "martina.cardillo@inaf.it",
  "subject": "AT LIGO-Virgo S190421ar: AGILE GRID observations",
  "submitter": "Martina Cardillo at INAF-IAPS  <martina.cardillo@inaf.it>",
  "eventId": "LIGO-Virgo S190421ar"
}