Cooling of dark neutron stars
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arXiv
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| Format: | Preprint |
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2025
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| author | Zhou, B. X. Das, H. C. Wei, J. B. Burgio, G. F. Li, Z. H. Schulze, H. -J. |
| author_facet | Zhou, B. X. Das, H. C. Wei, J. B. Burgio, G. F. Li, Z. H. Schulze, H. -J. |
| contents | We study the cooling of isolated dark-matter-admixed neutron stars, employing a realistic nuclear equation of state and realistic nuclear pairing gaps, together with fermionic dark matter of variable particle mass and dark-matter fraction. The related parameter space is scanned for the stellar structural and cooling properties. We find that a consistent description of all current cooling data requires fast direct Urca cooling and reasonable proton 1S0 gaps. Dark matter affects the cooling properties by a modification of the nuclear density profiles, but also changes stellar radius and maximum mass. Possible signals of a large dark matter content could be a very massive but slow-cooling star or a very light but fast-cooling star. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_09704 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Cooling of dark neutron stars Zhou, B. X. Das, H. C. Wei, J. B. Burgio, G. F. Li, Z. H. Schulze, H. -J. High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology Nuclear Theory We study the cooling of isolated dark-matter-admixed neutron stars, employing a realistic nuclear equation of state and realistic nuclear pairing gaps, together with fermionic dark matter of variable particle mass and dark-matter fraction. The related parameter space is scanned for the stellar structural and cooling properties. We find that a consistent description of all current cooling data requires fast direct Urca cooling and reasonable proton 1S0 gaps. Dark matter affects the cooling properties by a modification of the nuclear density profiles, but also changes stellar radius and maximum mass. Possible signals of a large dark matter content could be a very massive but slow-cooling star or a very light but fast-cooling star. |
| title | Cooling of dark neutron stars |
| topic | High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology Nuclear Theory |
| url | https://arxiv.org/abs/2508.09704 |