2016/05/19 by Donato Bini, Andrea Geralico
Physics and Astronomy · #Astrophysical Phenomena and Observations #Black hole (networking) #Drag #Geodesic #Horizon #Quantum Electrodynamics and Casimir Effect #Relativity and Gravitational Theory #Rotating black hole #Scattering #Schwarzschild metric #Schwarzschild radius #Spacetime #White hole #gr-qc
paper · pdf · doi:10.1088/0264-9381/33/12/125024
published as Class. Quantum Grav. 33, 125024 (2016) · 12 pages, 4 figures; published version
openalex publication_date 2016/05/19 · openalex created_date 2016/06/24 · arxiv created 2018/08/17 · arxiv updated 2018/08/20 · openalex updated_date 2026/08/05
A 'temporal analogue' of the standard Poynting–Robertson effect is analyzed as induced by a dust of particles (instead of a gas of photons) surrounding a Schwarzschild black hole. Test particles inside this cloud undergo acceleration effects due to the presence of a friction force, so that the fate of their evolution can be completely different from the corresponding geodesic motion. Typical situations are discussed of hyperbolic motion of particles scattered by the black hole in the presence of a dust filling the whole spacetime region outside the horizon as well as particles which free fall radially crossing a corona located at a certain distance from the horizon. The existence of equilibrium orbits may prevent particles from either falling into the hole or escaping to infinity.