Does HESS J1731-347 have a thick crust ?
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866918087541915648 |
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| author | Kubis, Sebastian Wójcik, Włodzimierz |
| author_facet | Kubis, Sebastian Wójcik, Włodzimierz |
| contents | A relativistic mean-field model with a crossing term of isovector-scalar and isoscalar mesons, the Cracow crossing terms (CCT) model, has previously been shown to be capable of explaining the light and compact object HESS J1731-347. Here, the model is supplemented with a correct treatment of the phase transition. Applying the thermodynamically consistent Gibbs conditions shows that a mixed-phase system occurs in the core of the neutron star over a wide range of densities, extending up to the neutron star crust, leading to an intriguing stellar structure with a thick and massive crust. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_06837 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Does HESS J1731-347 have a thick crust ? Kubis, Sebastian Wójcik, Włodzimierz Nuclear Theory High Energy Astrophysical Phenomena Solar and Stellar Astrophysics A relativistic mean-field model with a crossing term of isovector-scalar and isoscalar mesons, the Cracow crossing terms (CCT) model, has previously been shown to be capable of explaining the light and compact object HESS J1731-347. Here, the model is supplemented with a correct treatment of the phase transition. Applying the thermodynamically consistent Gibbs conditions shows that a mixed-phase system occurs in the core of the neutron star over a wide range of densities, extending up to the neutron star crust, leading to an intriguing stellar structure with a thick and massive crust. |
| title | Does HESS J1731-347 have a thick crust ? |
| topic | Nuclear Theory High Energy Astrophysical Phenomena Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2507.06837 |