Testing the ALP-photon coupling with polarization measurements of Sagittarius A

doi:10.1088/1475-7516/2021/03/018

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	Testing the ALP-photon coupling with polarization measurements of Sagittarius A
	Yuan, Guan-Wen ; Xia, Zi-Qing ; Tang, Chengfeng ; Zhao, Yaqi ; Cai, Yi-Fu ; Chen, Yifan 4; Shu, Jing 4,5,6,7,8,9; Yuan, Qiang 1,7
刊名	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
	2021
期号	3 页码:18
ISSN号	1475-7516
DOI	10.1088/1475-7516/2021/03/018
英文摘要	Ultra-light bosons such as axions or axion-like particles (ALPs), are promising candidates to solve the dark matter problem. A unique way to detect such ALPs is to search for the periodic oscillation feature of the position angles of linearly polarized photons emitted from the galaxy center. In this work, we use the high-resolution polarimetric measurements of the radiation near the super-massive black hole (SMBH) in the center of the Milky Way, i.e., Sagittarius A(star) (Sgr A(star)), by a sub-array of the Event Horizon Telescope to search for the ultra-light ALPs. We derive upper limits on the ALP-photon coupling of similar to 10(-12) GeV-1 for ALP masses of m(a) similar to (10(-19) - 10(-18)) eV, with a solitonic core + NFW dark matter density profile. Our results are stronger than that derived from the observations of SN1987A and a population of supernovae in the mass window of (10(-19) - 10(-17)) eV. Improved polarimetric measurements with the full Event Horizon Telescope can further strengthen the constraints.
学科主题	Astronomy & Astrophysics ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27502]
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.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210033, Peoples R China 2.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China 3.Univ Sci & Technol China, Sch Phys Sci, Dept Astron, Hefei 230026, Anhui, Peoples R China 4.Univ Sci & Technol China, CAS Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China 5.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 6.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 7.CAS Ctr Excellence Particle Phys, Beijing 100049, Peoples R China 8.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China 9.Univ Chinese Acad Sci, Sch Fundamental Phys & Math Sci, Hangzhou Inst Adv Study, Hangzhou 310024, Peoples R China 10.Int Ctr Theoret Phys Asia Pacific, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Guan-Wen,Xia, Zi-Qing,Tang, Chengfeng,et al. Testing the ALP-photon coupling with polarization measurements of Sagittarius A[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2021(3):18.
APA	Yuan, Guan-Wen.,Xia, Zi-Qing.,Tang, Chengfeng.,Zhao, Yaqi.,Cai, Yi-Fu.,...&Yuan, Qiang.(2021).Testing the ALP-photon coupling with polarization measurements of Sagittarius A.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(3),18.
MLA	Yuan, Guan-Wen,et al."Testing the ALP-photon coupling with polarization measurements of Sagittarius A".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .3(2021):18.