Testing the Kerr Paradigm via Synchrotron Radiation
文献类型：期刊论文
| 作者 | Ghasemi-Nodehi, M.2; Tabatabaei, Fatemeh S.3; Cui, Lang1,2,4 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2025-10-20 |
| 卷号 | 992期号:2页码:8 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ae0450 |
| 通讯作者 | Ghasemi-Nodehi, M.(mghasemin@xao.ac.cn) |
| 英文摘要 | General relativity has been tested in weak field regimes, but strong gravity regimes are still to be verified. The strong gravity regime with synchrotron radiation has not yet been explored. The nonthermal synchrotron emission traces the magnetic field and cosmic-ray electrons. This paper presents a test of a strong gravity regime using synchrotron radiation with two different spacetime metrics: Kerr and Cardoso, Pani, and Rico (CPR). We investigate the effects of variation in model parameters such as the spin, inclination angle, magnetic field, and nonthermal spectral index of the synchrotron radiation on flux density as a function of frequency as an observable, first in the Kerr and then in the CPR spacetime. We generate mock data observations and fit the model using Bayesian inference for both spacetimes. Assuming a uniform prior, analyzed synchrotron radiation with a Bayesian approach can distinguish Kerr and CPR spacetimes by constraining spin and deformation parameters. A Gaussian prior also allows for this distinction. However, if a Gaussian prior is used for the spin while keeping the deformation parameters uniform, only the spin can be constrained, making it impossible to differentiate between Kerr and CPR spacetime. |
| WOS关键词 | IRON LINE REVERBERATION ; M87 EVENT HORIZON ; BLACK-HOLE SPIN ; GENERAL-RELATIVITY ; FIELD ; MASS ; PARAMETRIZATION ; CANDIDATES |
| 资助项目 | CAS Talent Program ; CAS Talent Program ; Xinjiang Tianchi Talent Program[2021-XBQNXZ-005] ; CAS Light of West China Program[2022SKA0120102] ; National SKA Program of China[2023TSYCCX0099] ; Tianshan Talent Training Program |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001595686400001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | CAS Talent Program ; CAS Talent Program ; Xinjiang Tianchi Talent Program ; CAS Light of West China Program ; National SKA Program of China ; Tianshan Talent Training Program |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/8256]  |
| 专题 | 星系宇宙学研究团组 |
| 通讯作者 | Ghasemi-Nodehi, M. |
| 作者单位 | 1.Xinjiang Key Lab Radio Astrophys, 150 Sci 1-St, Urumqi 830011, Peoples R China 2.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci-1 St, Urumqi 830011, Peoples R China 3.Inst Res Fundamental Sci, Sch Astron, Tehran 193955531, Iran 4.Chinese Acad Sci, Key Lab Radio Astron & Technol, A20 Datun Rd, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ghasemi-Nodehi, M.,Tabatabaei, Fatemeh S.,Cui, Lang. Testing the Kerr Paradigm via Synchrotron Radiation[J]. ASTROPHYSICAL JOURNAL,2025,992(2):8. |
| APA | Ghasemi-Nodehi, M.,Tabatabaei, Fatemeh S.,&Cui, Lang.(2025).Testing the Kerr Paradigm via Synchrotron Radiation.ASTROPHYSICAL JOURNAL,992(2),8. |
| MLA | Ghasemi-Nodehi, M.,et al."Testing the Kerr Paradigm via Synchrotron Radiation".ASTROPHYSICAL JOURNAL 992.2(2025):8. |
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来源：新疆天文台
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