Perihelion precession and shadows near black holes and naked singularities
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.102.044042
Abstract: It is now known that, apart from black holes, some naked singularities can also cast shadows which provide their possible observable signatures. We examine the relevant question here as to how to distinguish then these… read more here.
Keywords: perihelion precession; black holes; perihelion; naked singularity ... See more keywords
Retrolensing by light rays slightly inside and outside of a photon sphere around a Reissner-Nordström naked singularity
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review D"
DOI: 10.1103/physrevd.105.024009
Abstract: We investigate retrolensing of sun lights reflected by a photon sphere around a Reissner-Nordström naked singularity. We apply the deflection angles of light rays reflected by slightly outside the photon sphere and rays reflected by… read more here.
Keywords: sphere around; around reissner; photon sphere; naked singularity ... See more keywords
Spin precession in a black hole and naked singularity spacetimes
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review D"
DOI: 10.1103/physrevd.95.044006
Abstract: We propose here a specific criterion to address the existence or otherwise of Kerr naked singularities, in terms of the precession of the spin of a test gyroscope due to the frame dragging by the… read more here.
Keywords: naked singularity; precession; spin precession; black hole ... See more keywords
Massless charged particles, naked singularity, and GUP in Reissner-Nordström-de Sitter-like spacetime
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.99.084013
Abstract: Motivated by the endeavors of Li Xiang and You-Gen Shen on naked singularities, we investigate the validity of the cosmic censorship conjecture in the context of generalized uncertainty principle. In particular, upon considering both linear… read more here.
Keywords: massless; spacetime; sitter; naked singularity ... See more keywords