Testing loop quantum gravity by quasi-periodic oscillations: rotating blackholes
Abstract We investigate a compelling model of a rotating black hole that is deformed by the effects of loop quantum gravity (LQG). We present a simplified metric and explore two distinct geometries: one in which the masses of the black hole and white hole are equal, and another in which they differ....
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-12-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-024-13669-7 |
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| author | Jafar Khodagholizadeh Ghadir Jafari Alireza Allahyari Ali Vahedi |
| author_facet | Jafar Khodagholizadeh Ghadir Jafari Alireza Allahyari Ali Vahedi |
| author_sort | Jafar Khodagholizadeh |
| collection | DOAJ |
| description | Abstract We investigate a compelling model of a rotating black hole that is deformed by the effects of loop quantum gravity (LQG). We present a simplified metric and explore two distinct geometries: one in which the masses of the black hole and white hole are equal, and another in which they differ. Our analysis yields the radius of the innermost stable circular orbits (ISCO), as well as the energy and angular momentum of a particle within this framework. Additionally, we find the frequency of the first-order resonance separately. We constrain the model by the quasi-periodic oscillations (QPO) of the X-ray binary GRO J1655-40. We show that $$\lambda =0.15^{+0.23}_{-0.14}$$ λ = 0 . 15 - 0.14 + 0.23 at $$1\sigma $$ 1 σ confidence level for equal mass black hole and white hole geometry. For the other geometry we get $$\lambda =0.11^{+0.07}_{-0.07}$$ λ = 0 . 11 - 0.07 + 0.07 at $$1\sigma $$ 1 σ confidence level. We encounter a degeneracy in the parameter space that hinders our ability to constrain $$\lambda $$ λ with greater precision. |
| format | Article |
| id | doaj-art-69f03c56539e41d796e68edb841adacf |
| institution | Kabale University |
| issn | 1434-6052 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-69f03c56539e41d796e68edb841adacf2025-02-02T12:39:17ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522024-12-01841211310.1140/epjc/s10052-024-13669-7Testing loop quantum gravity by quasi-periodic oscillations: rotating blackholesJafar Khodagholizadeh0Ghadir Jafari1Alireza Allahyari2Ali Vahedi3Department of Physics Education, Farhangian UniversityDepartment of Physics Education, Farhangian UniversityDepartment of Astronomy and High Energy Physics, Faculty of Physics, Kharazmi UniversityDepartment of Astronomy and High Energy Physics, Faculty of Physics, Kharazmi UniversityAbstract We investigate a compelling model of a rotating black hole that is deformed by the effects of loop quantum gravity (LQG). We present a simplified metric and explore two distinct geometries: one in which the masses of the black hole and white hole are equal, and another in which they differ. Our analysis yields the radius of the innermost stable circular orbits (ISCO), as well as the energy and angular momentum of a particle within this framework. Additionally, we find the frequency of the first-order resonance separately. We constrain the model by the quasi-periodic oscillations (QPO) of the X-ray binary GRO J1655-40. We show that $$\lambda =0.15^{+0.23}_{-0.14}$$ λ = 0 . 15 - 0.14 + 0.23 at $$1\sigma $$ 1 σ confidence level for equal mass black hole and white hole geometry. For the other geometry we get $$\lambda =0.11^{+0.07}_{-0.07}$$ λ = 0 . 11 - 0.07 + 0.07 at $$1\sigma $$ 1 σ confidence level. We encounter a degeneracy in the parameter space that hinders our ability to constrain $$\lambda $$ λ with greater precision.https://doi.org/10.1140/epjc/s10052-024-13669-7 |
| spellingShingle | Jafar Khodagholizadeh Ghadir Jafari Alireza Allahyari Ali Vahedi Testing loop quantum gravity by quasi-periodic oscillations: rotating blackholes European Physical Journal C: Particles and Fields |
| title | Testing loop quantum gravity by quasi-periodic oscillations: rotating blackholes |
| title_full | Testing loop quantum gravity by quasi-periodic oscillations: rotating blackholes |
| title_fullStr | Testing loop quantum gravity by quasi-periodic oscillations: rotating blackholes |
| title_full_unstemmed | Testing loop quantum gravity by quasi-periodic oscillations: rotating blackholes |
| title_short | Testing loop quantum gravity by quasi-periodic oscillations: rotating blackholes |
| title_sort | testing loop quantum gravity by quasi periodic oscillations rotating blackholes |
| url | https://doi.org/10.1140/epjc/s10052-024-13669-7 |
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