Probing Lorentz-violating effects via precession and accretion disk images of a rotating bumblebee black hole
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| _version_ | 1866908930444099584 |
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| author | Ou, Qing Wu, Zhen-Bo Wan, Qian Li, Peng-Cheng |
| author_facet | Ou, Qing Wu, Zhen-Bo Wan, Qian Li, Peng-Cheng |
| contents | We investigate kinematic and optical signatures of Lorentz-violation in the strong-field region of a rotating bumblebee black hole generated by a scalar-gradient bumblebee field. Through the analysis of spin precession of test gyroscopes and timelike geodesic motion in the spacetime, we find that Lorentz-violating effect suppresses the Lense-Thirring precession near the horizon, while enhancing geodetic precession in the static, spherically symmetric limit. For bound circular orbits in the equatorial plane, the Lorentz-violation leads to an increase in the periastron precession frequency. Furthermore, images of a geometrically thin accretion disk reveal that the Lorentz-violation has a negligible impact on the critical curve, but significantly shrinks the inner shadow and enhances the lensed ring. These results indicate that inner shadow measurements, combined with selected precession observables, may provide complementary probes of Lorentz-violating effects in strong-field gravity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_00570 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Probing Lorentz-violating effects via precession and accretion disk images of a rotating bumblebee black hole Ou, Qing Wu, Zhen-Bo Wan, Qian Li, Peng-Cheng General Relativity and Quantum Cosmology We investigate kinematic and optical signatures of Lorentz-violation in the strong-field region of a rotating bumblebee black hole generated by a scalar-gradient bumblebee field. Through the analysis of spin precession of test gyroscopes and timelike geodesic motion in the spacetime, we find that Lorentz-violating effect suppresses the Lense-Thirring precession near the horizon, while enhancing geodetic precession in the static, spherically symmetric limit. For bound circular orbits in the equatorial plane, the Lorentz-violation leads to an increase in the periastron precession frequency. Furthermore, images of a geometrically thin accretion disk reveal that the Lorentz-violation has a negligible impact on the critical curve, but significantly shrinks the inner shadow and enhances the lensed ring. These results indicate that inner shadow measurements, combined with selected precession observables, may provide complementary probes of Lorentz-violating effects in strong-field gravity. |
| title | Probing Lorentz-violating effects via precession and accretion disk images of a rotating bumblebee black hole |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2604.00570 |