Abstract
Many properties of black holes can be studied using acoustic analogues in the laboratory through the propagation of sound waves. We investigate in detail sound wave propagation in a rotating acoustic (2 + 1)-dimensional black hole, which corresponds to the "draining bathtub" fluid flow. We report results on i) quasinormal modes, ii) power-law tails, iii) superradiant amplification coefficients, iv) frequencies and growth times for the superradiant "black hole bomb" instability first studied by Press and Teukolsky.
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