The constraint on modified black holes with extreme mass ratio inspirals
Abstract The low-energy effective action of String Theory introduces corrections to the dilaton-graviton sector, resulting in deformed black holes beyond general relativity. We analyze extreme mass-ratio inspiral systems (EMRIs), where a stellar-mass object spirals into a slowly rotating supermassiv...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-04-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-025-14100-5 |
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| author | Chao Zhang Guoyang Fu Yungui Gong |
| author_facet | Chao Zhang Guoyang Fu Yungui Gong |
| author_sort | Chao Zhang |
| collection | DOAJ |
| description | Abstract The low-energy effective action of String Theory introduces corrections to the dilaton-graviton sector, resulting in deformed black holes beyond general relativity. We analyze extreme mass-ratio inspiral systems (EMRIs), where a stellar-mass object spirals into a slowly rotating supermassive black hole including a distinct deviation parameter. This study examines the effects of this deformation on the rate of change of orbital energy and angular momentum, orbital evolution, and phase dynamics, incorporating leading-order post-Newtonian corrections. The String theory parameter $$\alpha $$ α will accelerate the EMRI merger because of the extra energy and angular momentum fluxes carried away by corrections to the dilaton-graviton sector. With 1-year observations of EMRIs, we employ the Fisher information matrix method to evaluate the potential for detecting deviations from general relativity through space-based gravitational wave detectors that utilize time-delay interferometry to suppress laser noise. The constraint on modified black holes, $$\varDelta \alpha \preceq 10^{-5}$$ Δ α ⪯ 10 - 5 , is almost the same with and without the time-delay interferometry combination. This analysis enhances our understanding and underscores the crucial role of observations in advancing gravitational phenomena within String Theory. |
| format | Article |
| id | doaj-art-ce1cfeee4505419287404facabf60eb4 |
| institution | DOAJ |
| issn | 1434-6052 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-ce1cfeee4505419287404facabf60eb42025-08-20T03:04:53ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522025-04-0185411110.1140/epjc/s10052-025-14100-5The constraint on modified black holes with extreme mass ratio inspiralsChao Zhang0Guoyang Fu1Yungui Gong2Institute of Fundamental Physics and Quantum Technology, Department of Physics, School of Physical Science and Technology, Ningbo UniversitySchool of Physics and Astronomy, Shanghai Jiao Tong UniversityInstitute of Fundamental Physics and Quantum Technology, Department of Physics, School of Physical Science and Technology, Ningbo UniversityAbstract The low-energy effective action of String Theory introduces corrections to the dilaton-graviton sector, resulting in deformed black holes beyond general relativity. We analyze extreme mass-ratio inspiral systems (EMRIs), where a stellar-mass object spirals into a slowly rotating supermassive black hole including a distinct deviation parameter. This study examines the effects of this deformation on the rate of change of orbital energy and angular momentum, orbital evolution, and phase dynamics, incorporating leading-order post-Newtonian corrections. The String theory parameter $$\alpha $$ α will accelerate the EMRI merger because of the extra energy and angular momentum fluxes carried away by corrections to the dilaton-graviton sector. With 1-year observations of EMRIs, we employ the Fisher information matrix method to evaluate the potential for detecting deviations from general relativity through space-based gravitational wave detectors that utilize time-delay interferometry to suppress laser noise. The constraint on modified black holes, $$\varDelta \alpha \preceq 10^{-5}$$ Δ α ⪯ 10 - 5 , is almost the same with and without the time-delay interferometry combination. This analysis enhances our understanding and underscores the crucial role of observations in advancing gravitational phenomena within String Theory.https://doi.org/10.1140/epjc/s10052-025-14100-5 |
| spellingShingle | Chao Zhang Guoyang Fu Yungui Gong The constraint on modified black holes with extreme mass ratio inspirals European Physical Journal C: Particles and Fields |
| title | The constraint on modified black holes with extreme mass ratio inspirals |
| title_full | The constraint on modified black holes with extreme mass ratio inspirals |
| title_fullStr | The constraint on modified black holes with extreme mass ratio inspirals |
| title_full_unstemmed | The constraint on modified black holes with extreme mass ratio inspirals |
| title_short | The constraint on modified black holes with extreme mass ratio inspirals |
| title_sort | constraint on modified black holes with extreme mass ratio inspirals |
| url | https://doi.org/10.1140/epjc/s10052-025-14100-5 |
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