Observability of spherical photon orbits in near-extremal Kerr black holes
arXiv:1904.00271 · doi:10.1103/PhysRevD.100.044058
Abstract
We investigate the spherical photon orbits in near-extremal Kerr spacetimes. We show that the spherical photon orbits with impact parameters in a finite range converge on the event horizon. Furthermore, we demonstrate that the Weyl curvature near the horizon does not generate the shear of a congruence of such light rays. Because of this property, a series of images produced by the light orbiting around a near-extremal Kerr black hole several times can be observable.
12 pages, 3 figures; v2: published version
References in corpus (14)
- First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
- First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole
- First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole
- First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring
- First M87 Event Horizon Telescope Results. II. Array and Instrumentation
- First M87 Event Horizon Telescope Results. III. Data Processing and Calibration
- Event-horizon-scale structure in the supermassive black hole candidate at the Galactic Centre
- Jet Launching Structure Resolved Near the Supermassive Black Hole in M87
- Collision of two general geodesic particles around a Kerr black hole
- Observational Signature of High Spin at the Event Horizon Telescope
- Photon Emission Near Extreme Kerr Black Holes
- Parallel-propagated frame along null geodesics in higher-dimensional black hole spacetimes
- Critical Emission from a High-Spin Black Hole
- Particle Dynamics in Weakly Charged Extreme Kerr Throat
Cited by in corpus (18)
- Calculating black hole shadows: Review of analytical studies
- Shadow of a Spinning Black Hole in an Expanding Universe
- A study on black hole shadows in asymptotically de Sitter spacetimes
- Investigating effects of dark matter on photon orbits and black hole shadows
- First analytical calculation of black hole shadow in McVittie metric
- Quasi-local photon surfaces in general spherically symmetric spacetimes
- Integrability of Kerr-Newman spacetime with cloud strings, quintessence and electromagnetic field
- Escape probability of a photon emitted near the black hole horizon
- Observability of the innermost stable circular orbit in a near-extremal Kerr black hole
- Photon Emission Near Myers-Perry Black Holes in the Large Dimension Limit
- Complete classification of photon escape in the Kerr black hole spacetime
- Emissions of photons near the horizons of Kerr-Sen black holes
- Quasi-local studies of the particle surfaces and their stability in general spacetimes
- Photon emission from inside the innermost stable circular orbit
- High spin expansion for null geodesics
- Third type of spacetime with the coexistence of integrability and non-integrability
- Strong-deflection expansion of the deflection angle near a degenerate photon sphere
- Strong deflection of massive particles via the geodesic deviation equation