Origin of the signals registered on february 23, 1987 in gravity antennas

During the SN1987A outburst on February 23, 1987, four underground neutrino detectors and two gravitational antennas in Rome and Maryland detected signals associated with the gravitational collapse of the star’s core. Since it is impossible to detect direct gravitational radiation from the collapse of SN1987A with antennas, it is still not clear what events were recorded by gravitational antennas. In this work, an amplitude analysis of the signals from gravitational antennas in Rome and Maryland in the vicinity of the signals from neutrino detectors during Supernova SN1987A was carried out. It is shown that the amplitude distributions in all antenna signals are consistent with the distribution of fluctuating energy losses of atmospheric muons crossing the antennas. A conclusion has been made about the muon origin of signals detected by “Weber” type antennas — aluminized cylinders with a mass of 2–3 tons.