PUGLIESE, Daniela and Hernando QUEVEDO. Repulsive gravity effects in horizon formation: Horizon remnants in naked singularities. General Relativity and Gravitation. US - Spojené státy americké, 2021, vol. 53, No 10, p. "89-1"-"89-14", 14 pp. ISSN 0001-7701. Available from: https://dx.doi.org/10.1007/s10714-021-02858-4.
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Basic information
Original name Repulsive gravity effects in horizon formation: Horizon remnants in naked singularities
Authors PUGLIESE, Daniela (380 Italy, belonging to the institution) and Hernando QUEVEDO.
Edition General Relativity and Gravitation, US - Spojené státy americké, 2021, 0001-7701.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
WWW URL
RIV identification code RIV/47813059:19630/21:A0000152
Organization unit Institute of physics in Opava
Doi http://dx.doi.org/10.1007/s10714-021-02858-4
UT WoS 000700395400001
Keywords in English Black holes;Naked singularities;Killing horizons;Light surfaces;Photon orbits
Tags 2022, FÚ, RIV22
Tags International impact, Reviewed
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 17/2/2022 14:55.
Abstract
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.
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