Cosmological constant corrections to the photon sphere and black hole shadow radii

Abstract

We review the equations determining the photon sphere radius and the black hole shadow radius, and calculate the cosmological constant corrections arising when the dark energy action has the usual form, and when dark energy arises from a Weyl scaling invariant dark energy action. For black hole targets of the Event Horizon Telescope, the corrections are very small.

5 pages

References in corpus (4)

• Gravitational Test Beyond the First Post-Newtonian Order with the Shadow of the M87 Black Hole
• Testing General Metric Theories of Gravity with Bursting Neutron Stars
• Is "Dark Energy" a Quantum Vacuum Energy?
• Are Astrophysical "Black" Holes Leaky?

Cited by in corpus (46)

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• The Influence of Uniform Magnetic Fields on Strong Field Gravitational Lensing by Kerr Black Holes
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• Black hole shadow and acceleration bounds for spherically symmetric spacetimes
• $H_0$ Tension on the Light of Supermassive Black Hole Shadows Data
• Quantum-corrected Schwarzschild AdS black hole surrounded by quintessence: Thermodynamics and Shadows
• The Existence and Distribution of Photon Spheres Near Spherically Symmetric Black Holes -- A Geometric Analysis
• Lensing Signatures of a Slowly-Accelerated Black Hole
• Motion of particles around a magnetically charged Euler-Heisenberg black hole with scalar hair and the Event Horizon Telescope
• Exact wave-optical imaging of a Kerr-de Sitter black hole using Heun's equation
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• Black Hole Shadows in Einstein-Bel-Robinson Gravity
• Weak Gravitational Lensing in Ricci-Coupled Kalb-Ramond Bumblebee Gravity: Global Monopole and Axion-Plasmon Medium Effects
• Multimodal signatures of asymptotic (A)dS Kalb-Ramond black holes: Constraints through the shadow, weak deflection angle, and topological photon spheres
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• Imprints of a gravitational wave through the weak field deflection of photons
• Traces of quantum fuzziness on the black hole shadow and particle deflection in the multi-fractional theory of gravity
• Analyzing the Influence of Geometrical Deformation on Photon Sphere and Shadow Radius: A New Analytical Approach -Stationary, and Axisymmetric Spacetime
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• Boundary-only weak deflection angles from isothermal optical geometry
• Gravitational Black Hole Shadow Spectroscopy
• Gauss-Bonnet lensing of spinning massive particles in static spherically symmetric spacetimes
• Shedding Light on Gravity: Black Hole Shadows and Lensing Signatures in Lorentz Gauge Theory
• Exploring the role of accretion disk geometry in shaping black hole shadows
• Quasinormal Mode Spectroscopy via Horizon-Brightened Quantum Optics
• Photon region boundary for stationary axisymmetric black holes
• Analytical approach for calculating shadow of dynamical black hole
• Topological charge and black hole photon spheres in massive gravity