Rotating black hole mimicker surrounded by the string cloud
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| _version_ | 1866929201687298048 |
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| author | Yang, Yi Liu, Dong Övgün, Ali Lambiase, Gaetano Long, Zheng-Wen |
| author_facet | Yang, Yi Liu, Dong Övgün, Ali Lambiase, Gaetano Long, Zheng-Wen |
| contents | Traversable wormholes and regular black holes usually represent completely different scenarios. But in the black bounce spacetime they can be described by a same line element, which is very attractive. Furthermore, the black hole photos taken by EHT show that black holes have spin, so spin is an indispensable intrinsic property of black holes in the actual universe. In this work, we derive a rotating black hole mimicker surrounded by the string cloud (SC), which can be interpolated to represent regular black hole spacetime and traversable wormhole spacetime. We investigate the effect of the spin $a$ and SC parameter $L$ on the observables (shadow radius $R_s$ and distortion $δ_s$) and energy emission rate of the black hole mimicker surrounded by the SC. We find that shadow for this spacetime is very sensitive to the $L$, i.e., the SC parameter can significantly increase the boundary of the shadow. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_09344 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Rotating black hole mimicker surrounded by the string cloud Yang, Yi Liu, Dong Övgün, Ali Lambiase, Gaetano Long, Zheng-Wen General Relativity and Quantum Cosmology Traversable wormholes and regular black holes usually represent completely different scenarios. But in the black bounce spacetime they can be described by a same line element, which is very attractive. Furthermore, the black hole photos taken by EHT show that black holes have spin, so spin is an indispensable intrinsic property of black holes in the actual universe. In this work, we derive a rotating black hole mimicker surrounded by the string cloud (SC), which can be interpolated to represent regular black hole spacetime and traversable wormhole spacetime. We investigate the effect of the spin $a$ and SC parameter $L$ on the observables (shadow radius $R_s$ and distortion $δ_s$) and energy emission rate of the black hole mimicker surrounded by the SC. We find that shadow for this spacetime is very sensitive to the $L$, i.e., the SC parameter can significantly increase the boundary of the shadow. |
| title | Rotating black hole mimicker surrounded by the string cloud |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2307.09344 |