Influence of quintessence dark energy on the shadow of black hole
Abstract We investigate the effects of quintessence dark energy on the shadows of black hole, surrounded by various profiles of accretions. For the thin-disk accretion, the images of the black hole comprises the dark region and bright region, including direct emission, lensing rings and photon rings...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-11-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-020-08656-7 |
| _version_ | 1828542835177029632 |
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| author | Xiao-Xiong Zeng Hai-Qing Zhang |
| author_facet | Xiao-Xiong Zeng Hai-Qing Zhang |
| author_sort | Xiao-Xiong Zeng |
| collection | DOAJ |
| description | Abstract We investigate the effects of quintessence dark energy on the shadows of black hole, surrounded by various profiles of accretions. For the thin-disk accretion, the images of the black hole comprises the dark region and bright region, including direct emission, lensing rings and photon rings. Although their details depend on the form of the emission, generically, direct emission plays a major role for the observed brightness of the black hole, while the lensing ring makes a small contribution and the photon ring makes a negligible contribution. The existence of a cosmological horizon also plays an important role in the shadows, since the observer in the domain of outer communications is near the cosmological horizon. For spherically symmetric accretion, static and infalling matters are considered. We find that the positions of photon spheres are the same for both static and infalling accretions. However, the observed specific intensity of the image for infalling accretion is darker than for static accretion, due to the Doppler effect of the infalling motion. |
| first_indexed | 2024-12-12T02:04:17Z |
| format | Article |
| id | doaj.art-b97b1dc2ec70478baa1bf5d4b4192aad |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-12T02:04:17Z |
| publishDate | 2020-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-b97b1dc2ec70478baa1bf5d4b4192aad2022-12-22T00:42:06ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522020-11-01801111410.1140/epjc/s10052-020-08656-7Influence of quintessence dark energy on the shadow of black holeXiao-Xiong Zeng0Hai-Qing Zhang1State Key Laboratory of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong UniversityDepartment of Space Science, Center for Gravitational Physics, Beihang UniversityAbstract We investigate the effects of quintessence dark energy on the shadows of black hole, surrounded by various profiles of accretions. For the thin-disk accretion, the images of the black hole comprises the dark region and bright region, including direct emission, lensing rings and photon rings. Although their details depend on the form of the emission, generically, direct emission plays a major role for the observed brightness of the black hole, while the lensing ring makes a small contribution and the photon ring makes a negligible contribution. The existence of a cosmological horizon also plays an important role in the shadows, since the observer in the domain of outer communications is near the cosmological horizon. For spherically symmetric accretion, static and infalling matters are considered. We find that the positions of photon spheres are the same for both static and infalling accretions. However, the observed specific intensity of the image for infalling accretion is darker than for static accretion, due to the Doppler effect of the infalling motion.http://link.springer.com/article/10.1140/epjc/s10052-020-08656-7 |
| spellingShingle | Xiao-Xiong Zeng Hai-Qing Zhang Influence of quintessence dark energy on the shadow of black hole European Physical Journal C: Particles and Fields |
| title | Influence of quintessence dark energy on the shadow of black hole |
| title_full | Influence of quintessence dark energy on the shadow of black hole |
| title_fullStr | Influence of quintessence dark energy on the shadow of black hole |
| title_full_unstemmed | Influence of quintessence dark energy on the shadow of black hole |
| title_short | Influence of quintessence dark energy on the shadow of black hole |
| title_sort | influence of quintessence dark energy on the shadow of black hole |
| url | http://link.springer.com/article/10.1140/epjc/s10052-020-08656-7 |
| work_keys_str_mv | AT xiaoxiongzeng influenceofquintessencedarkenergyontheshadowofblackhole AT haiqingzhang influenceofquintessencedarkenergyontheshadowofblackhole |