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gr-qc2025★ 1 cited
Electromagnetic radiation from circular orbits in Schwarzschild--de Sitter spacetime
João P. B. Brito, Rafael P. Bernar, Luís 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…
gr-qc2025
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…