The physical acceptability conditions and the strategies to obtain anisotropic compact objects
Abstract We studied five methods to include anisotropy, or unequal stress distributions, in general relativistic matter configurations. We used nine acceptability conditions that the metric and physical variables must meet to determine if our models were astrophysically viable. Our analysis found th...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-11-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-023-12175-6 |
| _version_ | 1797233423004205056 |
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| author | Daniel Suárez-Urango Laura M. Becerra Justo Ospino Luis A. Núñez |
| author_facet | Daniel Suárez-Urango Laura M. Becerra Justo Ospino Luis A. Núñez |
| author_sort | Daniel Suárez-Urango |
| collection | DOAJ |
| description | Abstract We studied five methods to include anisotropy, or unequal stress distributions, in general relativistic matter configurations. We used nine acceptability conditions that the metric and physical variables must meet to determine if our models were astrophysically viable. Our analysis found the most effective way to introduce anisotropy while keeping a simple density profile. We also found a practical “rule of thumb” that relates the density at the boundary to the density at the centre of relativistic matter distributions. Additionally, we calculated the configuration radius and encountered that values observed by NICER for PSR J0740+6620 are consistent with several acceptable matter configurations, both isotropic and anisotropic. |
| first_indexed | 2024-03-11T11:01:35Z |
| format | Article |
| id | doaj.art-d6f3b36d44e14a2e91d0c32bfd8d03aa |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-04-24T16:15:56Z |
| publishDate | 2023-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-d6f3b36d44e14a2e91d0c32bfd8d03aa2024-03-31T11:30:14ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522023-11-01831111310.1140/epjc/s10052-023-12175-6The physical acceptability conditions and the strategies to obtain anisotropic compact objectsDaniel Suárez-Urango0Laura M. Becerra1Justo Ospino2Luis A. Núñez3Escuela de Física, Universidad Industrial de SantanderEscuela de Física, Universidad Industrial de SantanderDepartamento de Matemática Aplicada and Instituto Universitario de Física Fundamental y Matemáticas, Universidad de SalamancaEscuela de Física, Universidad Industrial de SantanderAbstract We studied five methods to include anisotropy, or unequal stress distributions, in general relativistic matter configurations. We used nine acceptability conditions that the metric and physical variables must meet to determine if our models were astrophysically viable. Our analysis found the most effective way to introduce anisotropy while keeping a simple density profile. We also found a practical “rule of thumb” that relates the density at the boundary to the density at the centre of relativistic matter distributions. Additionally, we calculated the configuration radius and encountered that values observed by NICER for PSR J0740+6620 are consistent with several acceptable matter configurations, both isotropic and anisotropic.https://doi.org/10.1140/epjc/s10052-023-12175-6 |
| spellingShingle | Daniel Suárez-Urango Laura M. Becerra Justo Ospino Luis A. Núñez The physical acceptability conditions and the strategies to obtain anisotropic compact objects European Physical Journal C: Particles and Fields |
| title | The physical acceptability conditions and the strategies to obtain anisotropic compact objects |
| title_full | The physical acceptability conditions and the strategies to obtain anisotropic compact objects |
| title_fullStr | The physical acceptability conditions and the strategies to obtain anisotropic compact objects |
| title_full_unstemmed | The physical acceptability conditions and the strategies to obtain anisotropic compact objects |
| title_short | The physical acceptability conditions and the strategies to obtain anisotropic compact objects |
| title_sort | physical acceptability conditions and the strategies to obtain anisotropic compact objects |
| url | https://doi.org/10.1140/epjc/s10052-023-12175-6 |
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