Nonradial stability of topological stars
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866913682731040768 |
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| author | Dima, Alexandru Melis, Marco Pani, Paolo |
| author_facet | Dima, Alexandru Melis, Marco Pani, Paolo |
| contents | Topological stars are regular, horizonless solitons arising from dimensional compactification of Einstein-Maxwell theory in five dimensions, which could describe qualitative properties of microstate geometries for astrophysical black holes. They also provide a compelling realization of ultracompact objects arising from a well-defined theory and display all the phenomenological features typically associated with black hole mimickers, including a (stable) photon sphere, long-lived quasinormal modes, and echoes in the ringdown. By completing a thorough linear stability analysis, we provide strong numerical evidence that these solutions are stable against nonradial perturbations with zero Kaluza-Klein momentum. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_04444 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Nonradial stability of topological stars Dima, Alexandru Melis, Marco Pani, Paolo General Relativity and Quantum Cosmology High Energy Physics - Theory Topological stars are regular, horizonless solitons arising from dimensional compactification of Einstein-Maxwell theory in five dimensions, which could describe qualitative properties of microstate geometries for astrophysical black holes. They also provide a compelling realization of ultracompact objects arising from a well-defined theory and display all the phenomenological features typically associated with black hole mimickers, including a (stable) photon sphere, long-lived quasinormal modes, and echoes in the ringdown. By completing a thorough linear stability analysis, we provide strong numerical evidence that these solutions are stable against nonradial perturbations with zero Kaluza-Klein momentum. |
| title | Nonradial stability of topological stars |
| topic | General Relativity and Quantum Cosmology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2502.04444 |