Data recorded by the Rome room temperature gravitational wave antenna, during the supernova SN 1987 A in the large magellanic cloud

The data recorded by the Rome room temperature gravitational wave antenna during the Supernova SN 1987 A have been analyzed in connection with the Mont Blanc neutrino event. An energy innovation is observed which precedes by 1.4 ± 0.5 second the first observed neutrino arrival time with the probability of being accidental of 3 per cent. An estimation of the energy emitted as g.w. distributed over 4 π and a frequency bandwidth of 1 kHz gives the abnormal figure of 2,400 sun mass. If, in spite of this result, we tentatively compute the neutrino mass from the observed ''time delay'' δt = 1.4 ± 0.5 second, we obtain mνec2 ≤ 7.2 ± 1.3 eV. Considering the possible fluctuation of the observation time of the first neutrino the lower limit would turn out smaller