Kavli Affiliate: Ke Wang
| First 5 Authors: Ke Wang, Chao-Jun Feng, Towe Wang, ,
| Summary:
To explore the feasibility of utilizing black hole images to test the
cosmological constant, we have developed a comprehensive analytical method for
simulating images of Kerr-de Sitter black holes illuminated by equatorial thin
accretion disks. Our findings indicate that the cosmological constant not only
reduces the apparent size of the black hole but also increases its apparent
brightness. We believe that the photon ring, as a promising observable feature,
presents potential opportunities for investigating the impact of the
cosmological constant on black hole observations.
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