The Observational Shadow Features of a Renormalization Group Improved Black Hole Considering Spherical Accretions
The study of black hole shadows by considering the surrounding kinds of matter has attracted interest in recent years. In this paper, we use the ray-tracing method to study shadows and photon spheres of renormalization group improved (RGI) black holes, taking into account the different thin spherica...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Symmetry |
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| Online Access: | https://www.mdpi.com/2073-8994/14/10/1959 |
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| author | Yun-Xian Chen Ping-Hui Mou Guo-Ping Li |
| author_facet | Yun-Xian Chen Ping-Hui Mou Guo-Ping Li |
| author_sort | Yun-Xian Chen |
| collection | DOAJ |
| description | The study of black hole shadows by considering the surrounding kinds of matter has attracted interest in recent years. In this paper, we use the ray-tracing method to study shadows and photon spheres of renormalization group improved (RGI) black holes, taking into account the different thin spherical accretion models. We find that an increase in the parameters Ω and <i>γ</i>, which are excited by renormalization group theory, can decrease the event horizon and the radius of the photon sphere while increasing the effective potential. For static and infalling accretions, these results indicate that black hole shadows are related to the geometry of spacetime, and are nearly unaffected by spherical accretions. However, due to the Doppler effect, the shadow in the infalling case is darker than the static one, and the intensities of the photon sphere decay more slowly from the photon sphere to infinity. In addition, the peak intensities out of the shadow increase with the parameters Ω and <i>γ</i>. Finally, it can be seen that the effect of Ω on the shadow is more distinct by comparing it with that of <i>γ</i> at the same parameter level. |
| first_indexed | 2024-03-09T19:26:29Z |
| format | Article |
| id | doaj.art-0d7621d2b82446829fa010cbb15c232c |
| institution | Directory Open Access Journal |
| issn | 2073-8994 |
| language | English |
| last_indexed | 2024-03-09T19:26:29Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Symmetry |
| spelling | doaj.art-0d7621d2b82446829fa010cbb15c232c2023-11-24T02:49:42ZengMDPI AGSymmetry2073-89942022-09-011410195910.3390/sym14101959The Observational Shadow Features of a Renormalization Group Improved Black Hole Considering Spherical AccretionsYun-Xian Chen0Ping-Hui Mou1Guo-Ping Li2Physics and Astronomy College, China West Normal University, Nanchong 637000, ChinaPhysics and Astronomy College, China West Normal University, Nanchong 637000, ChinaPhysics and Astronomy College, China West Normal University, Nanchong 637000, ChinaThe study of black hole shadows by considering the surrounding kinds of matter has attracted interest in recent years. In this paper, we use the ray-tracing method to study shadows and photon spheres of renormalization group improved (RGI) black holes, taking into account the different thin spherical accretion models. We find that an increase in the parameters Ω and <i>γ</i>, which are excited by renormalization group theory, can decrease the event horizon and the radius of the photon sphere while increasing the effective potential. For static and infalling accretions, these results indicate that black hole shadows are related to the geometry of spacetime, and are nearly unaffected by spherical accretions. However, due to the Doppler effect, the shadow in the infalling case is darker than the static one, and the intensities of the photon sphere decay more slowly from the photon sphere to infinity. In addition, the peak intensities out of the shadow increase with the parameters Ω and <i>γ</i>. Finally, it can be seen that the effect of Ω on the shadow is more distinct by comparing it with that of <i>γ</i> at the same parameter level.https://www.mdpi.com/2073-8994/14/10/1959black holespherical accretionshadow |
| spellingShingle | Yun-Xian Chen Ping-Hui Mou Guo-Ping Li The Observational Shadow Features of a Renormalization Group Improved Black Hole Considering Spherical Accretions Symmetry black hole spherical accretion shadow |
| title | The Observational Shadow Features of a Renormalization Group Improved Black Hole Considering Spherical Accretions |
| title_full | The Observational Shadow Features of a Renormalization Group Improved Black Hole Considering Spherical Accretions |
| title_fullStr | The Observational Shadow Features of a Renormalization Group Improved Black Hole Considering Spherical Accretions |
| title_full_unstemmed | The Observational Shadow Features of a Renormalization Group Improved Black Hole Considering Spherical Accretions |
| title_short | The Observational Shadow Features of a Renormalization Group Improved Black Hole Considering Spherical Accretions |
| title_sort | observational shadow features of a renormalization group improved black hole considering spherical accretions |
| topic | black hole spherical accretion shadow |
| url | https://www.mdpi.com/2073-8994/14/10/1959 |
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