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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2408.09243 |
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| _version_ | 1866914915308011520 |
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| author | Guo, Guangzhou Wang, Peng Wu, Tianshu Yang, Haitang |
| author_facet | Guo, Guangzhou Wang, Peng Wu, Tianshu Yang, Haitang |
| contents | This study investigates scalar clouds around Kerr-Newman black holes within the Einstein-Maxwell-scalar model. Tachyonic instabilities are identified as the driving mechanism for scalar cloud formation. Employing the spectral method, we numerically compute wave functions and parameter space existence domains for both fundamental and excited scalar cloud modes. Our analysis demonstrates that black hole spin imposes an upper limit on the existence of scalar clouds, with excited modes requiring stronger tachyonic instabilities for their formation. These findings lay the groundwork for exploring the nonlinear dynamics and astrophysical implications of scalar clouds. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_09243 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Stationary Scalar Clouds around Kerr-Newman Black Holes Guo, Guangzhou Wang, Peng Wu, Tianshu Yang, Haitang General Relativity and Quantum Cosmology This study investigates scalar clouds around Kerr-Newman black holes within the Einstein-Maxwell-scalar model. Tachyonic instabilities are identified as the driving mechanism for scalar cloud formation. Employing the spectral method, we numerically compute wave functions and parameter space existence domains for both fundamental and excited scalar cloud modes. Our analysis demonstrates that black hole spin imposes an upper limit on the existence of scalar clouds, with excited modes requiring stronger tachyonic instabilities for their formation. These findings lay the groundwork for exploring the nonlinear dynamics and astrophysical implications of scalar clouds. |
| title | Stationary Scalar Clouds around Kerr-Newman Black Holes |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2408.09243 |