In Michel accretion, Eulerian perturbations generate an acoustic black hole metric where outward acoustic waves tunnel through the sonic horizon, producing Hawking phonons with temperature and frequency enhanced by the background spacetime geometry.
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Acoustic Hawking radiation as a tunnelling effect in Michel accretion
In Michel accretion, Eulerian perturbations generate an acoustic black hole metric where outward acoustic waves tunnel through the sonic horizon, producing Hawking phonons with temperature and frequency enhanced by the background spacetime geometry.