TITLE: GCN CIRCULAR NUMBER: 24526 SUBJECT: LIGO/Virgo S190513bm: AGILE MCAL observation DATE: 19/05/13 22:49:51 GMT FROM: Claudio Casentini at INAF-IAPS C.Casentini (INAF/IAPS), F.Lucarelli (SSDC, and INAF/OAR), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata), M.Cardillo, G.Piano, A.Ursi (INAF/IAPS), C. Pittori, F. Verrecchia (SSDC, and INAF/OAR), A. Bulgarelli, 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 S190513bm at T0 = 2019-05-13 20:54:28 (UT), a preliminary analysis of the AGILE minicalorimeter (MCAL) triggered data found no event candidates within a time interval covering +/- 100 sec from the LIGO-Virgo T0. Three-sigma upper limits (ULs) are obtained for a 1 s integration time at different celestial positions within the accessible S190513bm 90% c.l. localization region (almost 80% of the given GW contour), from a minimum of 8.54E-07 erg cm^-2 to a maximum of 1.73E-06 erg cm^-2 (assuming as spectral model a single power law with photon index 1.5). The average off-axis angle is almost 90 degrees. 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.