A Multipole-Based Framework for Kerr Black Hole Mimickers: From General Construction to a Specific Case of Study
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arXiv
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866913954612117504 |
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| author | Gambino, Claudio |
| author_facet | Gambino, Claudio |
| contents | We present a novel systematic framework for engineering energy-momentum tensors in linearized gravity that generate gravitational fields with a prescribed multipolar structure, aimed at modeling black hole mimickers. As a concrete example, we analyze an anisotropic rotating fluid with a Gaussian-like energy-density profile which, at linearized order, satisfies all energy and causality conditions while generating a gravitational field that exactly reproduces the multipolar structure of a Kerr black hole. We then investigate the phenomenology of both the source and the induced metric, comparing our findings with the corresponding black hole limit. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_17032 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A Multipole-Based Framework for Kerr Black Hole Mimickers: From General Construction to a Specific Case of Study Gambino, Claudio General Relativity and Quantum Cosmology High Energy Physics - Theory We present a novel systematic framework for engineering energy-momentum tensors in linearized gravity that generate gravitational fields with a prescribed multipolar structure, aimed at modeling black hole mimickers. As a concrete example, we analyze an anisotropic rotating fluid with a Gaussian-like energy-density profile which, at linearized order, satisfies all energy and causality conditions while generating a gravitational field that exactly reproduces the multipolar structure of a Kerr black hole. We then investigate the phenomenology of both the source and the induced metric, comparing our findings with the corresponding black hole limit. |
| title | A Multipole-Based Framework for Kerr Black Hole Mimickers: From General Construction to a Specific Case of Study |
| topic | General Relativity and Quantum Cosmology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2502.17032 |