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Do static sources outside a Schwarzschild black hole radiate?

A. Higuchi·G. E. A. Matsas·D. Sudarsky
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Abstract

We show that static sources coupled to a massless scalar field in Schwarzschild spacetime give rise to emission and absorption of zero-energy particles due to the presence of Hawking radiation. This is in complete analogy with the description of the bremsstrahlung by a uniformly accelerated charge from the coaccelerated observers' point of view. The response rate of the source is found to coincide with that in Minkowski spacetime as a function of its proper acceleration. This result may be viewed as restoration of the equivalence principle by the Hawking effect.

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A. Higuchi, G. E. A. Matsas, D. Sudarsky. 1996-10-08. Do static sources outside a Schwarzschild black hole radiate?. https://doi.org/10.1103/physrevd.56.6071

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