Multiple quasinormal modes and overtones are measured from interface waves on a giant quantum vortex in superfluid helium-4 that emulates a rotating black-hole geometry.
Wildeman, Real-time quantitative Schlieren imaging by fast Fourier demodulation of a checkered backdrop, Exp
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Black-hole spectroscopy from a giant quantum vortex
Multiple quasinormal modes and overtones are measured from interface waves on a giant quantum vortex in superfluid helium-4 that emulates a rotating black-hole geometry.