4 papers
Electromagnetic radiation from circular orbits in Schwarzschild--de Sitter spacetime
João P. B. Brito, Rafael P. Bernar, LuÃs C. B. Crispino
We investigate the electromagnetic radiation emitted by a charged particle orbiting a four-dimensional Schwarzschild--de Sitter black hole using a semiclassical approach. We calcul…
Relativistic tidal divergences in circular orbits and the dynamics of light rings
Victor F. C. Vieira, Rafael P. Bernar, Caio F. B. Macedo
Tidal forces acting on orbiting bodies arise from inhomogeneities in the gravitational field, generating stresses that can deform or even disrupt these objects. In this work, we an…
Nonminimally coupled scalar field in Schwarzschild--de Sitter spacetime: Geodesic synchrotron radiation
João P. B. Brito, Rafael P. Bernar, LuÃs C. B. Crispino
We analyze the scalar radiation emitted by a source interacting with a nonminimally coupled scalar field in four-dimensional Schwarzschild--de Sitter spacetime. We obtain the emiss…
Semiclassical bremsstrahlung from a charge radially falling into a Schwarzschild black hole
João P. B. Brito, Rafael P. Bernar, Atsushi Higuchi +1
A semiclassical investigation of the electromagnetic radiation emitted by a charged particle in a radially freely falling motion in Schwarzschild spacetime is carried out. We use q…