Probing Axions with Event Horizon Telescope Polarimetric Measurements

doi:10.1103/PhysRevLett.124.061102

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	Probing Axions with Event Horizon Telescope Polarimetric Measurements
	Chen, Yifan 2,3; Shu, Jing 4,5,6,7; Xue, Xiao 4; Yuan, Qiang 7,8,9; Zhao, Yue 1
刊名	PHYSICAL REVIEW LETTERS
	2020
卷号	124 期号:6 页码:61102
关键词	ROTATING BLACK-HOLE CP CONSERVATION PERTURBATIONS POLARIZATION
ISSN号	0031-9007
DOI	10.1103/PhysRevLett.124.061102
英文摘要	With high spatial resolution, polarimetric imaging of a supermassive black hole, like M87(star) or Sgr A(star), by the Event Horizon Telescope can be used to probe the existence of ultralight bosonic particles, such as axions. Such particles can accumulate around a rotating black hole through the superradiance mechanism, forming an axion cloud. When linearly polarized photons are emitted from an accretion disk near the horizon, their position angles oscillate due to the birefringent effect when traveling through the axion background. In particular, the observations of supermassive black holes M87(star) (Sgr A(star)) can probe the dimensionless axion-photon coupling c = 2 pi g(a gamma)f(a) for axions with mass around O(10(-20)) eV [O(10(-17)) eV] and decay constant f(a) < O(10(16)) GeV, which is complimentary to other axion measurements.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27061]
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.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 3.Sorbonne Univ, LPTHE, UMR 7589, 4 Pl Jussieu, F-75252 Paris 05, France 4.CNRS, 4 Pl Jussieu, F-75252 Paris 05, France 5.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 6.Ctr Excellence Particle Phys, Beijing 100049, Peoples R China 7.Univ Chinese Acad Sci, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China 8.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China 9.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Peoples R China 10.Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA
推荐引用方式 GB/T 7714	Chen, Yifan,Shu, Jing,Xue, Xiao,et al. Probing Axions with Event Horizon Telescope Polarimetric Measurements[J]. PHYSICAL REVIEW LETTERS,2020,124(6):61102.
APA	Chen, Yifan,Shu, Jing,Xue, Xiao,Yuan, Qiang,&Zhao, Yue.(2020).Probing Axions with Event Horizon Telescope Polarimetric Measurements.PHYSICAL REVIEW LETTERS,124(6),61102.
MLA	Chen, Yifan,et al."Probing Axions with Event Horizon Telescope Polarimetric Measurements".PHYSICAL REVIEW LETTERS 124.6(2020):61102.