Correlation between the Maryland and Rome gravitational-wave detectors and the Mont Blanc, Kamioka and IMB particle detectors during SN 1987 A

Following a previously found correlation between the gravitational-wave detectors and the Mont Blanc particle detector, we have searched for a similar correlation between the data of the experiments mentioned in the title. We have found that both the Kamioka and the IMB data have a correlation with the gravitational-wave data that occurs with the same characteristics and at the same time of that already found with Mont Blanc. This correlation extends for a period of one or two hours centred at the hour 2:45 UT of 23 February 1987. It shows that the particle detector signals are delayed with respect to the gravitational-wave detector signals by (1.2±0.5) s. The probability that the additional correlation due to Kamioka and IMB is only accidental is estimated of the order of 10-3 or 10-4.