{
  "bibcode": "2019GCN.25630....1C",
  "body": "M. Cardillo (INAF/IAPS), F. Verrecchia (SSDC,and INAF/OAR), F. Longo \n(Univ. Trieste,\nand INFN Trieste),C. Pittori, F. Lucarelli (SSDC, and INAF/OAR), M. \nTavani (INAF/IAPS\nand Univ. Roma Tor Vergata),C. Casentini, G. Piano, A. Ursi \n(INAF/IAPS),A. Bulgarelli,\nV. Fioretti,N. Parmiggiani (INAF/OAS-Bologna), M. Pilia (INAF/OA-Cagliari),\nreport on behalf of the AGILE Team:\n\nIn response to the LIGO-Virgo GW event S190901ap at T0 = 2019-09-01 \n23:31:01.838\nUTC a preliminary analysis of the AGILE exposure at T0 shows that the \nGamma-Ray\nImaging Detector (GRID) exposure covered about 20% of the 90% c.l. \nlocalization\nregion (LR) (13% of 90% c.l. localization region (LR) is occulted 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 S190901ap 90% c.l. LR was \navailable.\nNo candidate gamma-ray transient was detected.\n\nThe following preliminary GRID values of 3-sigma upper limit (UL) are \nobtained:\n\nfrom 3.00e-07 to 9.32e-06 erg cm^-2 s^-1, with exposure of about 16% of \nthe LR over\nthe time interval ( T0s ; T0 + 10s );\nfrom 3.59e-08 to 6.91e-06 erg cm^-2 s^-1, with exposure of about 26% of \nthe LR over\nthe 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": 25630,
  "createdOn": 1567521133000,
  "email": "martina.cardillo@inaf.it",
  "subject": "LIGO/Virgo S190901ap: Upper limits from AGILE-GRID observations",
  "submitter": "Martina Cardillo at INAF-IAPS  <martina.cardillo@inaf.it>",
  "eventId": "LIGO/Virgo S190901ap"
}