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Optical images of the Kerr-Sen black hole and thin accretion disk

文献类型：期刊论文

作者Wang, Pei4; Guo, Sen4; Li LF(李丽仿)3; Mai, ZhanFeng2; Wu, BoFeng2; Deng, WenHao1; Jiang, QingQuan1
刊名EUROPEAN PHYSICAL JOURNAL C
出版日期2025-07-07
卷号85期号:7页码:34
ISSN号1434-6044
DOI10.1140/epjc/s10052-025-14441-1
通讯作者Guo, Sen(sguophys@126.com) ; Li, Li-Fang(lilifang@imech.ac.cn)
英文摘要This paper investigates the observable properties of a Kerr-Sen black hole surrounded by a thin accretion disk, focusing on the impact of the black hole's spin and charge on the image. Using ray-tracing techniques, we conduct a detailed analysis of the black hole's image, redshift distribution, and intensity distributions at different observation frequencies. The results demonstrate that spin has a more significant effect on the distortion of the inner shadow than charge, and the observer's inclination angle plays a critical role in shaping the redshift distribution, especially near the innermost stable circular orbit. Additionally, the intensity is found to be higher at 86 GHz than at 230 GHz. This study highlights the crucial role of the accretion disk's geometry in determining the black hole's image and redshift effects, thereby providing a refined theoretical framework to guide future observational efforts targeting the Kerr-Sen black hole and its electromagnetic signals.
分类号二类
WOS关键词SHADOW
资助项目National Key RD Program of China ; Guangxi Talent Program (Highland of Innovation Talents) ; Fund Project of Chongqing Normal University[24XLB033] ; [2024YFA1611700]
WOS研究方向Physics
语种英语
WOS记录号WOS:001524058900005
资助机构National Key RD Program of China ; Guangxi Talent Program (Highland of Innovation Talents) ; Fund Project of Chongqing Normal University
其他责任者Guo Sen，李丽仿
源URL[http://dspace.imech.ac.cn/handle/311007/102238]  
专题力学研究所_国家微重力实验室
作者单位1.China West Normal Univ, Sch Phys & Astron, Nanchong 637009, Peoples R China
2.Guangxi Univ, Sch Phys Sci & Technol, Guangxi Key Lab Relativist Astrophys, Nanning 530004, Peoples R China;
3.Chinese Acad Sci, Inst Mech, Ctr Gravitat Wave Expt, Natl Micrograv Lab, Beijing 100190, Peoples R China;
4.Chongqing Normal Univ, Coll Phys & Elect Engn, Chongqing 401331, Peoples R China;
推荐引用方式
GB/T 7714		 Wang, Pei,Guo, Sen,Li LF,et al. Optical images of the Kerr-Sen black hole and thin accretion disk[J]. EUROPEAN PHYSICAL JOURNAL C,2025,85(7):34.
APA Wang, Pei.,Guo, Sen.,李丽仿.,Mai, ZhanFeng.,Wu, BoFeng.,...&Jiang, QingQuan.(2025).Optical images of the Kerr-Sen black hole and thin accretion disk.EUROPEAN PHYSICAL JOURNAL C,85(7),34.
MLA Wang, Pei,et al."Optical images of the Kerr-Sen black hole and thin accretion disk".EUROPEAN PHYSICAL JOURNAL C 85.7(2025):34.

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来源：力学研究所

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