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	Natural Explanation for 21 cm Absorption Signals via Axion-Induced Cooling
	Houston, N; Li, C5; Li, TJ; Yang, QL; Zhang, X3,4
刊名	PHYSICAL REVIEW LETTERS
	2018
卷号	121期号:11页码:111301
关键词	CP INVARIANCE PARTICLES
ISSN号	0031-9007
DOI	10.1103/PhysRevLett.121.111301
英文摘要	The EDGES Collaboration has reported an anomalously strong 21 cm absorption feature corresponding to the era of first star formation, which may indirectly betray the influence of dark matter during this epoch. We demonstrate that, by virtue of the ability to mediate cooling processes while in the condensed phase, a small amount of axion dark matter can explain these observations within the context of standard models of axions and axionlike particles. The EDGES best-fit result favors an axionlike particle mass in the (10, 450) meV range, which can be compressed for the QCD axion to (100, 450) meV in the absence of fine tuning. Future experiments and large scale surveys, particularly the International Axion Observatory (IAXO) and EUCLID, should have the capability to directly test this scenario.
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/311006/22819]
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 Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Key Lab Computat Astrophys, 20A Datun Rd, Beijing 100012, Peoples R China 4.Jinan Univ, Phys Dept, Siyuan Lab, Guangzhou 510632, Guangdong, Peoples R China 5.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Houston, N,Li, C,Li, TJ,et al. Natural Explanation for 21 cm Absorption Signals via Axion-Induced Cooling[J]. PHYSICAL REVIEW LETTERS,2018,121(11):111301.
APA	Houston, N,Li, C,Li, TJ,Yang, QL,&Zhang, X.(2018).Natural Explanation for 21 cm Absorption Signals via Axion-Induced Cooling.PHYSICAL REVIEW LETTERS,121(11),111301.
MLA	Houston, N,et al."Natural Explanation for 21 cm Absorption Signals via Axion-Induced Cooling".PHYSICAL REVIEW LETTERS 121.11(2018):111301.

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