Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2005-03-11
Phys.Rev.D71:104013,2005
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
8 pages (revtex), 8 figures
Scientific paper
10.1103/PhysRevD.71.104013
We consider an electric charge, minimally coupled to the Maxwell field, rotating around a Schwarzschild black hole. We investigate how much of the radiation emitted from the swirling charge is absorbed by the black hole and show that most of the photons escape to infinity. For this purpose we use the Gupta-Bleuler quantization of the electromagnetic field in the modified Feynman gauge developed in the context of quantum field theory in Schwarzschild spacetime. We obtain that the two photon polarizations contribute quite differently to the emitted power. In addition, we discuss the accurateness of the results obtained in a full general relativistic approach in comparison with the ones obtained when the electric charge is assumed to be orbiting a massive object due to a Newtonian force.
Castineiras Jorge
Crispino Luis C. B.
Matsas George E. A.
Murta Rodrigo
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