Naked singularities and black hole Killing horizons
Daniela Pugliese, Hernando Quevedo

TL;DR
This paper develops a framework for analyzing special photon orbits in axially symmetric spacetimes, focusing on their role in understanding naked singularities and black hole thermodynamics.
Contribution
It introduces a null-orbits framework based on Killing vectors to study photon orbits in black holes and naked singularities, linking orbit properties to thermodynamic concepts.
Findings
Null orbits help distinguish black holes from naked singularities.
The framework connects photon orbit properties with thermodynamic behavior.
Insights into the structure of spacetime horizons and singularities.
Abstract
In this chapter, we study special photon orbits defined by means of Killing vectors and present a framework based on the properties of such null orbits. For concreteness, we restrict ourselves to the case of axially symmetric spacetimes describing either black holes with Killing horizons or naked singularities. The null-orbits framework is then applied to analyze properties of naked singularities and concepts of black hole thermodynamics.
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Taxonomy
TopicsCosmology and Gravitation Theories · Relativity and Gravitational Theory · Black Holes and Theoretical Physics
