Data Recordered by the Rome Room Temperature Gravitational Wave Antenna, during the Supernova SN 1987 a in the Large Magellanic Cloud

Abstract

The data recorded by the Rome room temperature gravitational-wave antenna during the Supernova SN 1987a have been analysed in connection with the Mont Blanc neutrino event. An energy innovation is observed which precedes by (1.4 ± 0.5) s 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 4π and a frequency bandwidth of 1 kHz gives the figure of 2400 M_⊙, which is abnormal according to standard views on g.w. Under the hypothesis that the time delay δt between the antenna signal and the first neutrino detected in the Mont Blanc tunnel is due only to the neutrino mass, the following mass value is derived from the observed δt = (1.4 ± 0.5) s: m_νe ≤ (7.2 ± 1.3) eV.