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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2406.19330 |
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| _version_ | 1866913406757371904 |
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| author | Bena, Iosif Di Russo, Giorgio Morales, Jose Francisco Ruipérez, Alejandro |
| author_facet | Bena, Iosif Di Russo, Giorgio Morales, Jose Francisco Ruipérez, Alejandro |
| contents | We consider coupled gravitational and electromagnetic perturbations of a family of five-dimensional Einstein-Maxwell solutions that describes both magnetized black strings and horizonless topological stars. We find that the odd perturbations of this background lead to a master equation with five Fuchsian singularities and compute its quasinormal mode spectrum using three independent methods: Leaver, WKB and numerical integration. Our analysis confirms that odd perturbations always decay in time, while spherically symmetric even perturbations may exhibit for certain ranges of the magnetic fluxes instabilities of Gregory-Laflamme type for black strings and of Gross-Perry-Yaffe type for topological stars. This constitutes evidence that topological stars and black strings are classically stable in a finite domain of their parameter space. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_19330 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Non-spinning tops are stable Bena, Iosif Di Russo, Giorgio Morales, Jose Francisco Ruipérez, Alejandro High Energy Physics - Theory We consider coupled gravitational and electromagnetic perturbations of a family of five-dimensional Einstein-Maxwell solutions that describes both magnetized black strings and horizonless topological stars. We find that the odd perturbations of this background lead to a master equation with five Fuchsian singularities and compute its quasinormal mode spectrum using three independent methods: Leaver, WKB and numerical integration. Our analysis confirms that odd perturbations always decay in time, while spherically symmetric even perturbations may exhibit for certain ranges of the magnetic fluxes instabilities of Gregory-Laflamme type for black strings and of Gross-Perry-Yaffe type for topological stars. This constitutes evidence that topological stars and black strings are classically stable in a finite domain of their parameter space. |
| title | Non-spinning tops are stable |
| topic | High Energy Physics - Theory |
| url | https://arxiv.org/abs/2406.19330 |