Shadow analysis of an approximate rotating black hole solution with weakly coupled global monopole charge
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866915215788998656 |
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| author | Fathi, Mohsen |
| author_facet | Fathi, Mohsen |
| contents | We investigate the shadow properties of a rotating black hole with a weakly coupled global monopole charge, using a modified Newman-Janis algorithm. This study explores how this charge and rotational effects shape the black hole's shadow, causal structure, and ergoregions, with implications for distinguishing it from Kerr-like solutions. Analysis of null geodesics reveals observable features that may constrain the global monopole charge and weak coupling parameters within nonminimal gravity frameworks. Observational data from M87* and Sgr A* constrain the global monopole charge and coupling constant to $0 \leq γ\lesssim 0.036$ and $-0.2 \lesssim α\leq 0$, respectively. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2411_08564 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Shadow analysis of an approximate rotating black hole solution with weakly coupled global monopole charge Fathi, Mohsen General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena High Energy Physics - Theory We investigate the shadow properties of a rotating black hole with a weakly coupled global monopole charge, using a modified Newman-Janis algorithm. This study explores how this charge and rotational effects shape the black hole's shadow, causal structure, and ergoregions, with implications for distinguishing it from Kerr-like solutions. Analysis of null geodesics reveals observable features that may constrain the global monopole charge and weak coupling parameters within nonminimal gravity frameworks. Observational data from M87* and Sgr A* constrain the global monopole charge and coupling constant to $0 \leq γ\lesssim 0.036$ and $-0.2 \lesssim α\leq 0$, respectively. |
| title | Shadow analysis of an approximate rotating black hole solution with weakly coupled global monopole charge |
| topic | General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena High Energy Physics - Theory |
| url | https://arxiv.org/abs/2411.08564 |