Superradiant evolution of the shadow and photon ring of Sgr A
文献类型：期刊论文
| 作者 | Chen, Yifan; Roy, Rittick2; Vagnozzi, Sunny3; Visinelli, Luca4,5 |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2022 |
| 卷号 | 106期号:4页码:43021 |
| 关键词 | SUPERMASSIVE BLACK-HOLE TELESCOPE RESULTS. VI. A-ASTERISK GALACTIC-CENTER DARK-MATTER ACCRETION FLOW VARIABILITY MILKY CONSTRAINTS COLLAPSE |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.106.043021 |
| 英文摘要 | Ultralight bosons can affect the dynamics of spinning black holes (BHs) via superradiant instability, which can lead to a time evolution of the supermassive BH shadow. We study prospects for witnessing the superradiance-induced BH shadow evolution, considering ultralight vector and tensor fields. We introduce two observables sensitive to the shadow time-evolution: the shadow drift, and the variation in the azimuthal angle lapse associated to the photon ring autocorrelation. The two observables are shown to be highly complementary, depending on the observer's inclination angle. Focusing on the supermassive object Sgr A* we show that both observables can vary appreciably over human timescales of a few years in the presence of superradiant instability, leading to signatures which are well within the reach of the Event Horizon Telescope for realistic observation times (but benefiting significantly from extended observation periods) and paving the way towards probing ultralight bosons in the & SIM;10-17 eV mass range. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27870]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Shanghai Jiao Tong Univ, Sch Phys & Astron, 800 Dongchuan Rd, Shanghai 200240, Peoples R China 2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 3.Fudan Univ, Ctr Field Theory & Particle Phys, Dept Phys, Shanghai 200438, Peoples R China 4.Univ Cambridge, Kavli Inst Cosmol KICC, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England 5.Tsung Dao Lee Inst TDLI, 520 Shengrong Rd, Shanghai 201210, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Yifan,Roy, Rittick,Vagnozzi, Sunny,et al. Superradiant evolution of the shadow and photon ring of Sgr A[J]. PHYSICAL REVIEW D,2022,106(4):43021. |
| APA | Chen, Yifan,Roy, Rittick,Vagnozzi, Sunny,&Visinelli, Luca.(2022).Superradiant evolution of the shadow and photon ring of Sgr A.PHYSICAL REVIEW D,106(4),43021. |
| MLA | Chen, Yifan,et al."Superradiant evolution of the shadow and photon ring of Sgr A".PHYSICAL REVIEW D 106.4(2022):43021. |
入库方式： OAI收割
来源：理论物理研究所
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