Crispino, LCBHiguchi, A.Matsas, GEA2014-05-202014-05-202000-01-07Classical and Quantum Gravity. Bristol: Iop Publishing Ltd, v. 17, n. 1, p. 19-32, 2000.0264-9381http://hdl.handle.net/11449/23619We analyse the scalar radiation emitted from a source rotating around a Schwarzschild black hole using the framework of quantum held theory at the tree level. We show that for relativistic circular orbits the emitted power is about 20-30% smaller than what would be obtained in Minkowski spacetime. We also show that most of the emitted energy escapes to infinity. Our formalism can readily be adapted to investigate similar processes.19-32engArtigo10.1088/0264-9381/17/1/303WOS:000084746200005Acesso restrito8525680767393616