Extracting information on black hole horizons
arXiv:2204.00481 · doi:10.1016/j.nuclphysb.2021.115544
Abstract
We present some features of Kerr black hole horizons that are replicated on orbits accessible to outside observers. We use the concepts of horizon confinement and replicas to show that outside the outer horizon there exist photon orbits whose frequencies contain information about the inner horizon and that can, in principle, be detected through the emission spectra of black holes. It is shown that such photon orbits exist close to the rotation axis of the Kerr geometry. We argue that these results could be used to recognize and further investigate black holes and their horizons
7 pages; 2 multipanels figures
References in corpus (7)
- First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
- General relativistic rotational energy extraction from black holes-accretion disk systems
- Disclosing connections between black holes and naked singularities: Horizon remnants, Killing throats and bottlenecks
- On The Impact Of 22Ne On The Pulsation Periods Of Carbon-Oxygen White Dwarfs With Helium Dominated Atmospheres
- Constraining LQG Graph with Light Surfaces: Properties of BH Thermodynamics for Mini-Super-Space, Semi-Classical Polymeric BH
- On the metric bundles of axially symmetric spacetimes
- Killing horizons, throats and bottlenecks in the ergoregion of the Kerr spacetime