Propagation of sound waves in a flowing fluid can be viewed as a minimally coupled massless scalar field propagating in curved spacetime. The analogue Hawking radiation from a spherically symmetric acoustic black hole and a (2 + 1)-dimensional rotating acoustic black hole are investigated respectively in Damour–Ruffini’s method. The emission rate and Hawking temperature are obtained, which are related to acoustic black holes parameter.

中文翻译：

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类似声学黑洞的霍金辐射

声波在流动流体中的传播可以看作是在弯曲时空中传播的最小耦合无质量标量场。Damour-Ruffini方法分别研究了来自球对称声学黑洞和(2+1)维旋转声学黑洞的模拟霍金辐射。得到与声学黑洞参数有关的发射率和霍金温度。