DO STATIC SOURCES OUTSIDE A SCHWARZSCHILD BLACK-HOLE RADIATE

We show that static sources coupled to a massless scalar field in Schw arzschild spacetime give rise to emission and absorption of zero-energ y particles due to the presence of Hawking radiation. This is in compl ete analogy with the description of the bremsstrahlung by a uniformly accelerated charge from the coaccelerated observers' point of view. Th e response rate of the source is found to coincide with that in Minkow ski spacetime as a function of its proper acceleration. It is interest ing that this quantum result appears to reflect the classical equivale nce principle. [S0556-2821(97)50122-6].