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Quasinormal mode oscillations in an analogue black hole experiment
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Quasinormal mode oscillations in an analogue black hole experiment
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The late stages of the relaxation process of a black hole are expected to depend only on its mass and angular momentum and not on the details of its formation process. Inspired by recent analogue gravity experiments, which demonstrate that certain black hole processes take place in gravitational and hydrodynamical systems alike, we conduct an experiment to search for quasinormal mode oscillations of the free surface of a hydrodynamical vortex flow. Our results demonstrate the occurrence and hint at the ubiquity of quasinormal ringing in nonequilibrium analog black hole experiments.
Forward citations
Cited by 4 Pith papers
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Lorentz violation increases the absorption cross section of rotating acoustic black holes at all frequencies and causes faster damping of their quasinormal modes.
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Absorption and quasinormal modes by rotating acoustic black holes in Lorentz-violating background
For a rotating 2+1 acoustic black hole, Lorentz-symmetry violation increases sound absorption at all frequencies and shifts the quasinormal spectrum toward lower, more damped frequencies.
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