TITLE: GCN CIRCULAR NUMBER: 26765 SUBJECT: LIGO/Virgo S200115j: upper limits from AGILE/MCAL observations DATE: 20/01/15 10:03:19 GMT FROM: Alessandro Ursi at INAF/IAPS A. Ursi (INAF/IAPS), F. Verrecchia, C. Pittori (SSDC, and INAF/OAR), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata), M. Cardillo, C. Casentini, G. Piano (INAF/IAPS), F. Lucarelli (SSDC, and INAF/OAR), A. Bulgarelli, V. Fioretti, N. Parmiggiani (INAF/OAS-Bologna), M. Pilia (INAF/OA-Cagliari), F. Longo (Univ. Trieste, and INFN Trieste), report on behalf of the AGILE Team: In response to the LIGO/Virgo GW event S200115j at T0 = 2020-01-15 04:23:09.742 (UT), a preliminary analysis of the AGILE minicalorimeter (MCAL) triggered data found no event candidates within a time interval covering -/+ 15 sec from the LIGO/Virgo T0. At the T0, about 50% of the S200115j 90% c.l. localization region was accessible to the AGILE MCAL. Three-sigma upper limits (ULs) of the fluence are obtained for a 1 s integration time at different celestial positions within the accessible S200115j localization region, from a minimum of 1.4E-06 erg cm^-2 to a maximum of 7.6E-06 erg cm^-2 (assuming as spectral model a single power law with photon index 1.5). The AGILE-MCAL detector is a CsI detector with a 4 pi FoV, sensitive in the energy range 0.4-100 MeV. Additional analysis of AGILE data is in progress.