Shadow and thin accretion disk around Ayón-Beato-García black hole coupled with cloud of strings
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866915629046431744 |
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| author | Cai, Ziqiang Ban, Zhenglong Wang, Lu Feng, Haiyuan Long, Zheng-Wen |
| author_facet | Cai, Ziqiang Ban, Zhenglong Wang, Lu Feng, Haiyuan Long, Zheng-Wen |
| contents | In this paper, we investigate the shadow and thin accretion disk around Ayón-Beato-García (ABG) black hole (BH) coupled with a cloud of strings (CS), characterized by the nonlinear electrodynamics (NLED) parameter $g$, and the CS parameter $a$. By comparing shadow diameters with Event Horizon Telescope (EHT) observations of M87$^{*}$ and Sgr A$^*$, we have established constraints on the BH parameters $g$ and $a$. Additionally, we analyze the BH shadow, lensing ring, and photon ring features for the ABG BH coupled with CS. Our results indicate that the shadow radius increases monotonically with the CS parameter $a$, while it decreases with increasing $g$. Finally, the study explores the physical properties and observational signatures of thin accretion disks around ABG BH with CS. The results show that an increase in parameter $g$ leads to a hotter and more luminous disk, while an increase in parameter $a$ results in a cooler and less luminous disk. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2506_22744 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Shadow and thin accretion disk around Ayón-Beato-García black hole coupled with cloud of strings Cai, Ziqiang Ban, Zhenglong Wang, Lu Feng, Haiyuan Long, Zheng-Wen General Relativity and Quantum Cosmology In this paper, we investigate the shadow and thin accretion disk around Ayón-Beato-García (ABG) black hole (BH) coupled with a cloud of strings (CS), characterized by the nonlinear electrodynamics (NLED) parameter $g$, and the CS parameter $a$. By comparing shadow diameters with Event Horizon Telescope (EHT) observations of M87$^{*}$ and Sgr A$^*$, we have established constraints on the BH parameters $g$ and $a$. Additionally, we analyze the BH shadow, lensing ring, and photon ring features for the ABG BH coupled with CS. Our results indicate that the shadow radius increases monotonically with the CS parameter $a$, while it decreases with increasing $g$. Finally, the study explores the physical properties and observational signatures of thin accretion disks around ABG BH with CS. The results show that an increase in parameter $g$ leads to a hotter and more luminous disk, while an increase in parameter $a$ results in a cooler and less luminous disk. |
| title | Shadow and thin accretion disk around Ayón-Beato-García black hole coupled with cloud of strings |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2506.22744 |