Distorting Kerr Images with Parity-Odd Scalar Hair
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arXiv
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| Auteurs principaux: | , , , , , |
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| Format: | Preprint |
| Publié: |
2026
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| _version_ | 1866913168144465920 |
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| author | Wan, Qian Hou, Yehui Huang, Yang Li, Peng-Cheng Guo, Minyong Chen, Bin |
| author_facet | Wan, Qian Hou, Yehui Huang, Yang Li, Peng-Cheng Guo, Minyong Chen, Bin |
| contents | We investigate thin-disk imaging of Kerr black holes with synchronized scalar hair, focusing on backreacted parity-odd excited states of a complex scalar field minimally coupled to Einstein gravity. The spacetime displays a core-double-torus lensing structure, with a central black hole surrounded by two scalar clouds. We study the dependence of the images on hair strength and viewing angle, identifying a weak-hair regime close to Kerr. With increasing hair, the photon ring and shadow region shrink and become more distorted. In the strong-hair regime, gravitational lensing produces new features, including multiple disconnected shadow components, crescent-shaped structures, and signatures of chaotic lensing. For nearly edge-on viewing angles, repeated equatorial crossings generate nested ring-like patterns. These results highlight possible geometric signatures of black holes with excited scalar hair. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_28376 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Distorting Kerr Images with Parity-Odd Scalar Hair Wan, Qian Hou, Yehui Huang, Yang Li, Peng-Cheng Guo, Minyong Chen, Bin General Relativity and Quantum Cosmology We investigate thin-disk imaging of Kerr black holes with synchronized scalar hair, focusing on backreacted parity-odd excited states of a complex scalar field minimally coupled to Einstein gravity. The spacetime displays a core-double-torus lensing structure, with a central black hole surrounded by two scalar clouds. We study the dependence of the images on hair strength and viewing angle, identifying a weak-hair regime close to Kerr. With increasing hair, the photon ring and shadow region shrink and become more distorted. In the strong-hair regime, gravitational lensing produces new features, including multiple disconnected shadow components, crescent-shaped structures, and signatures of chaotic lensing. For nearly edge-on viewing angles, repeated equatorial crossings generate nested ring-like patterns. These results highlight possible geometric signatures of black holes with excited scalar hair. |
| title | Distorting Kerr Images with Parity-Odd Scalar Hair |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2605.28376 |