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arXiv · 2207.00846

Testing the black hole area law with Event Horizon Telescope

Deng Wang
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Abstract

Hawking's black hole area theorem can be tested by monitoring the evolution of a single black hole over time. Using current imaging observations of two supermassive black holes M87* and Sgr A* from the Event Horizon Telescope (EHT), we find their horizon area variation fractions are consistent with the prediction of the black hole area law at the $1\,\sigma$ confidence level. We point out that whether the black hole area law is valid or not could be determined by future high precision EHT observations of Sgr A*.

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Deng Wang. 2022-07-02. Testing the black hole area law with Event Horizon Telescope. https://doi.org/10.1209/0295-5075%2Facbe13

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