Note on the Nature of Spontaneously Radiating Shock Waves
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In this paper, the viewpoint is expressed that the structure of a spontaneously radiating shock waves is a waveguide along which perturbations propagate. As usually, the perturbation velocity can be determined by the dispersion equation obtained from the relations for shocks. The perturbation velocity along the waveguide generally does not coincide with the above perturbation velocity and the envelope velocity does not coincide with the phase velocity of the waves.
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