Interior solutions of relativistic stars with anisotropic matter in scale-dependent gravity
Abstract We obtain well behaved interior solutions describing hydrostatic equilibrium of anisotropic relativistic stars in scale-dependent gravity, where Newton’s constant is allowed to vary with the radial coordinate throughout the star. Assuming (1) a linear equation-of-state in the MIT bag model...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2021-01-01
|
| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-021-08881-8 |
| _version_ | 1818923287293460480 |
|---|---|
| author | Grigoris Panotopoulos Ángel Rincón Ilídio Lopes |
| author_facet | Grigoris Panotopoulos Ángel Rincón Ilídio Lopes |
| author_sort | Grigoris Panotopoulos |
| collection | DOAJ |
| description | Abstract We obtain well behaved interior solutions describing hydrostatic equilibrium of anisotropic relativistic stars in scale-dependent gravity, where Newton’s constant is allowed to vary with the radial coordinate throughout the star. Assuming (1) a linear equation-of-state in the MIT bag model for quark matter, and (2) a certain profile for the energy density, we integrate numerically the generalized structure equations, and we compute the basic properties of the strange quark stars, such as mass, radius and compactness. Finally, we demonstrate that stability criteria as well as the energy conditions are fulfilled. Our results show that a decreasing Newton’s constant throughout the objects leads to slightly more massive and more compact stars. |
| first_indexed | 2024-12-20T02:07:02Z |
| format | Article |
| id | doaj.art-94b8fcf1a40b4547814086097b87ad8b |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-20T02:07:02Z |
| publishDate | 2021-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-94b8fcf1a40b4547814086097b87ad8b2022-12-21T19:57:11ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522021-01-0181111010.1140/epjc/s10052-021-08881-8Interior solutions of relativistic stars with anisotropic matter in scale-dependent gravityGrigoris Panotopoulos0Ángel Rincón1Ilídio Lopes2Centro de Astrofísica e Gravitação, Departamento de Física, Instituto Superior Técnico-IST, Universidade de Lisboa-ULInstituto de Física, Pontificia Universidad Católica de ValparaísoCentro de Astrofísica e Gravitação, Departamento de Física, Instituto Superior Técnico-IST, Universidade de Lisboa-ULAbstract We obtain well behaved interior solutions describing hydrostatic equilibrium of anisotropic relativistic stars in scale-dependent gravity, where Newton’s constant is allowed to vary with the radial coordinate throughout the star. Assuming (1) a linear equation-of-state in the MIT bag model for quark matter, and (2) a certain profile for the energy density, we integrate numerically the generalized structure equations, and we compute the basic properties of the strange quark stars, such as mass, radius and compactness. Finally, we demonstrate that stability criteria as well as the energy conditions are fulfilled. Our results show that a decreasing Newton’s constant throughout the objects leads to slightly more massive and more compact stars.https://doi.org/10.1140/epjc/s10052-021-08881-8 |
| spellingShingle | Grigoris Panotopoulos Ángel Rincón Ilídio Lopes Interior solutions of relativistic stars with anisotropic matter in scale-dependent gravity European Physical Journal C: Particles and Fields |
| title | Interior solutions of relativistic stars with anisotropic matter in scale-dependent gravity |
| title_full | Interior solutions of relativistic stars with anisotropic matter in scale-dependent gravity |
| title_fullStr | Interior solutions of relativistic stars with anisotropic matter in scale-dependent gravity |
| title_full_unstemmed | Interior solutions of relativistic stars with anisotropic matter in scale-dependent gravity |
| title_short | Interior solutions of relativistic stars with anisotropic matter in scale-dependent gravity |
| title_sort | interior solutions of relativistic stars with anisotropic matter in scale dependent gravity |
| url | https://doi.org/10.1140/epjc/s10052-021-08881-8 |
| work_keys_str_mv | AT grigorispanotopoulos interiorsolutionsofrelativisticstarswithanisotropicmatterinscaledependentgravity AT angelrincon interiorsolutionsofrelativisticstarswithanisotropicmatterinscaledependentgravity AT ilidiolopes interiorsolutionsofrelativisticstarswithanisotropicmatterinscaledependentgravity |