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http://hdl.handle.net/20.500.12386/34938
Titolo: | LIGO/Virgo S200213t: upper limits from AGILE/GRID observations | Autori: | Longo, F. PIANO, Giovanni CASENTINI, CLAUDIO TAVANI, Marco CARDILLO , MARTINA URSI, ALESSANDRO LUCARELLI, Fabrizio PITTORI, Carlotta VERRECCHIA, Francesco BULGARELLI, ANDREA FIORETTI, Valentina PARMIGGIANI, NICOLO PILIA, Maura Agile Team |
Data pubblicazione: | 2020 | Rivista: | GRB Coordinates Network | Numero: | 27055 | Da pagina:: | 1 | Abstract: | In response to the LIGO-Virgo GW event S200213t at T0 = 2020-02-13 04:10:40.328 (UTC) a preliminary analysis of the AGILE exposure at T0 shows that the Gamma-Ray Imaging Detector (GRID) exposure covered the 32% of the 90% c.l. localization region (LR) (4% of 90% c.l. LR is occulted by Earth). We performed an analysis of the GRID data in the energy range 50 MeV - 10 GeV on T0, where good exposure of the S200213t 90% c.l. LR was available. No candidate gamma-ray transient was detected. The following preliminary GRID values of 3-sigma upper limit (UL) are obtained: from 8.7e-07 to 7.2e-06 erg cm^-2 s^-1, with exposure of about 32% of the LR over the time interval ( T0 -2s ; T0 + 2s ); from 3.3e-07 to 6.4e-06 erg cm^-2 s^-1, with exposure of about 38% of the LR over the time interval ( T0s ; T0 + 10s ); from 3e-08 to 1.5e-06 erg cm^-2 s^-1, with exposure of about 48% of the LR over the time interval ( T0s ; T0 + 100s ); These measurements were obtained with AGILE observing a large portion of the sky in spinning mode. Additional analysis of AGILE data is in progress. | URI: | http://hdl.handle.net/20.500.12386/34938 | URL: | https://gcn.gsfc.nasa.gov/gcn/gcn3/27055.gcn3 | Bibcode ADS: | 2020GCN.27055....1L | Fulltext: | open |
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