Stringent axion constraints with Event Horizon Telescope polarimetric measurements of M87

被引：43

作者：

Chen, Yifan ^{[1
]}

Liu, Yuxin ^{[2
]}

Lu, Ru-Sen ^{[3
,4
,5
]}

Mizuno, Yosuke ^{[6
,7
,8
]}

Shu, Jing ^{[1
,9
,10
,11
,12
,13
]}

Xue, Xiao ^{[1
,9
]}

Yuan, Qiang ^{[11
,14
,15
]}

Zhao, Yue ^{[16
]}

机构：

[1] Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing, Peoples R China

[2] Tsinghua Univ, Dept Phys, Beijing, Peoples R China

[3] Chinese Acad Sci, Shanghai Astron Observ, Shanghai, Peoples R China

[4] Chinese Acad Sci, Key Lab Radio Astron, Nanjing, Peoples R China

[5] Max Planck Inst Radioastron, Bonn, Germany

[6] Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, Shanghai, Peoples R China

[7] Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai, Peoples R China

[8] Goethe Univ Frankfurt, Inst Theoret Phys, Frankfurt, Germany

[9] Univ Chinese Acad Sci, Sch Phys Sci, Beijing, Peoples R China

[10] CAS Ctr Excellence Particle Phys, Beijing, Peoples R China

[11] Peking Univ, Ctr High Energy Phys, Beijing, Peoples R China

[12] Univ Chinese Acad Sci, Sch Fundamental Phys & Math Sci, Hangzhou Inst Adv Study, Hangzhou, Peoples R China

[13] Int Ctr Theoret Phys Asia Pacific, Beijing, Peoples R China

[14] Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing, Peoples R China

[15] Univ Sci & Technol China, Sch Astron & Space Sci, Hefei, Peoples R China

[16] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA

来源：

NATURE ASTRONOMY | 2022年 / 6卷 / 05期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

BLACK-HOLE; ACCRETION FLOWS; MAGNETOHYDRODYNAMIC SIMULATIONS; CP CONSERVATION; POLARIZATION; EMISSION; SPIN;

D O I：

10.1038/s41550-022-01620-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The hitherto unprecedented angular resolution of the Event Horizon Telescope has created exciting opportunities in the search for new physics. Recently, the linear polarization of radiation emitted near the supermassive black hole M87* was measured on four separate days, precisely enabling tests of the existence of a dense axion cloud produced by a spinning black hole. The presence of an axion cloud leads to a frequency-independent oscillation in the electric vector position angle of this linear polarization. For the nearly face-on M87*, this oscillation in the electric vector position angle appears as a propagating wave along the photon ring. In this paper, we leverage the azimuthal distribution of electric vector position angle measured by the Event Horizon Telescope to study the axion-photon coupling. We propose a novel differential analysis procedure to reduce the astrophysical background, and derive stringent constraints on the existence of axions in the previously unexplored mass window of similar to(10(-21)-10(-20)) eV.

引用

页码：592 / 598

页数：7

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