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

Adler, Stephen L.; Virbhadra, K.S.

doi:10.1007/s10714-022-02976-7

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

May 9, 2022

5 pages

Published in:

Gen.Rel.Grav. 54 (2022) 8, 93

Published: Aug 26, 2022

e-Print:

2205.04628 [gr-qc]

DOI:

10.1007/s10714-022-02976-7

View in:

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Abstract: (Springer)

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.

Note:

5 pages

photon: sphere
scaling: invariance
scaling: Weyl
dark energy
black hole
cosmological constant
horizon
shadowing

References(11)

Figures(0)

Gravitational Test Beyond the First Post-Newtonian Order with the Shadow of the M87 Black Hole

Event Horizon Telescope

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