Repulsive gravity effects in horizon formation: Horizon remnants in naked singularities
Pugliese D. Quevedo H.
October 2021Springer
General Relativity and Gravitation
2021#53Issue 10
Repulsive gravity is a well known characteristic of naked singularities. In this work, we explore light surfaces and find new effects of repulsive gravity. We compare Kerr naked singularities with the corresponding black hole counterparts and find certain structures that are identified as horizon remnants. We argue that these features might be significant for the comprehension of processes that lead to the formation or eventually destruction of black hole Killing horizons. These features can be detected by observing photon orbits, particularly close to the rotation axis, which can be used to distinguish naked singularities from black holes.
Black holes , Killing horizons , Light surfaces , Naked singularities , Photon orbits
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Research Centre for Theoretical Physics and Astrophysics, Institute of Physics, Silesian University in Opava, Bezručovo náměstí 13, Opava, CZ-74601, Czech Republic
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, AP 70543, México, 04510, Mexico
Dipartimento di Fisica and ICRA, Università di Roma “La Sapienza”, Roma, 00185, Italy
Department of Theoretical and Nuclear Physics, Kazakh National University, Almaty, 050040, Kazakhstan
Research Centre for Theoretical Physics and Astrophysics
Instituto de Ciencias Nucleares
Dipartimento di Fisica and ICRA
Department of Theoretical and Nuclear Physics
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