Probing Einstein-Maxwell-Scalar Black hole via Thin Accretion Disks and Shadows with EHT Observations of M87* and Sgr A*
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| Format: | Preprint |
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2025
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| _version_ | 1866914071044947968 |
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| author | Wu, Yingdong Cai, Ziqiang Ban, Zhenglong Feng, Haiyuan Chen, Wei-Qiang |
| author_facet | Wu, Yingdong Cai, Ziqiang Ban, Zhenglong Feng, Haiyuan Chen, Wei-Qiang |
| contents | We investigated the shadows and thin accretion disks of Einstein-Maxwell-Scalar (EMS) black hole. Firstly, we investigated the influence of EMS parameters on the black hole shadow using the null geodesic method and constrained these parameters based on EHT observations of M87* and Sgr A*. Furthermore, we analyzed the direct emission, lensing ring, and photon ring structures in EMS black hole. Comparing our results with the Schwarzschild and Reissner-Nordstr$\ddot{\mathrm{o}}$m (RN) black holes, we found that the Schwarzschild black hole exhibits the largest shadow radius and the highest observed intensity. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2504_10327 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Probing Einstein-Maxwell-Scalar Black hole via Thin Accretion Disks and Shadows with EHT Observations of M87* and Sgr A* Wu, Yingdong Cai, Ziqiang Ban, Zhenglong Feng, Haiyuan Chen, Wei-Qiang General Relativity and Quantum Cosmology We investigated the shadows and thin accretion disks of Einstein-Maxwell-Scalar (EMS) black hole. Firstly, we investigated the influence of EMS parameters on the black hole shadow using the null geodesic method and constrained these parameters based on EHT observations of M87* and Sgr A*. Furthermore, we analyzed the direct emission, lensing ring, and photon ring structures in EMS black hole. Comparing our results with the Schwarzschild and Reissner-Nordstr$\ddot{\mathrm{o}}$m (RN) black holes, we found that the Schwarzschild black hole exhibits the largest shadow radius and the highest observed intensity. |
| title | Probing Einstein-Maxwell-Scalar Black hole via Thin Accretion Disks and Shadows with EHT Observations of M87* and Sgr A* |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2504.10327 |