Fundamental Advantages of the Ultrasonic Method for Detecting Gravitational Waves

Abstract

A previously unknown physical phenomenon of the effect of gravitational fields on ultrasonic waves propagating in nonlinear media has been discovered and established. A new promising gravitational wave detector has been developed and successfully tested based on this discovery. Two independent measuring channels with nonlinear, acoustically transparent media, in which ultrasonic waves propagate in opposite directions, were created for this purpose. By creating physical conditions, including pressure and temperature, ultrasonic waves are converted into test bodies continuously suspended in nonlinear, acoustically transparent media. In this case, the created test bodies, in the form of ultrasonic waves, are subject to the influence of gravitational waves during their propagation. The influence is realized through the dynamic forces caused by gravitational waves when they influence the instantaneous densities of ultrasonic waves propagating in nonlinear media. Gravitational waves are reliably detected by differentially measuring the mutual fluctuations of ultrasonic waves passing through acoustically transparent media in opposite directions. Direct dynamic measurements of signal fluctuations caused by the direct modulation of ultrasonic waves by gravitational waves provide the fundamental basis for the ultrasonic method. The developed ultrasonic detector enables continuous observation of numerous gravitational waves not only in our Galaxy but also in the Universe. Numerous gravitational oscillations of neutron star pulsars in our Galaxy are constantly observed in various directions of space, and gravitational supernova explosions in the Universe are observed almost continuously. Numerous gravitational waves from our Sun are also observed. The operation of the ultrasonic detector provides evidence of the enormous propagation speed of gravitational waves compared to the speed of light. These results are fundamentally unattainable with existing gravitational observatories. The developed ultrasonic method creates competition and a serious alternative to expensive projects to build gravitational observatories based on laser interferometric observation methods.