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	Natural Explanation for 21 cm Absorption Signals via Axion-Induced Cooling
	Houston, Nick1; Li, Chuang1,2; Li, Tianjun1,2; Yang, Qiaoli3; Zhang, Xin4,5
刊名	PHYSICAL REVIEW LETTERS
	2018-09-13
卷号	121期号:11页码:6
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.
资助项目	CAS President's International Fellowship ; National Natural Science Foundation of China[11475238] ; National Natural Science Foundation of China[11647601] ; National Natural Science Foundation of China[11875062] ; National Natural Science Foundation of China[11875148] ; Key Research Program of Frontier Science, CAS
WOS关键词	CP INVARIANCE ; PARTICLES
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000444614800004
资助机构	CAS President's International Fellowship ; CAS President's International Fellowship ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Science, CAS ; Key Research Program of Frontier Science, CAS ; CAS President's International Fellowship ; CAS President's International Fellowship ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Science, CAS ; Key Research Program of Frontier Science, CAS ; CAS President's International Fellowship ; CAS President's International Fellowship ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Science, CAS ; Key Research Program of Frontier Science, CAS ; CAS President's International Fellowship ; CAS President's International Fellowship ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Science, CAS ; Key Research Program of Frontier Science, CAS
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/22746]
专题	中国科学院国家天文台
通讯作者	Houston, Nick; Li, Chuang; Li, Tianjun; Yang, Qiaoli; Zhang, Xin
作者单位	1.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 3.Jinan Univ, Phys Dept, Siyuan Lab, Guangzhou 510632, Guangdong, Peoples R China 4.Chinese Acad Sci, Natl Astron Observ, Key Lab Computat Astrophys, 20A Datun Rd, Beijing 100012, Peoples R China 5.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Houston, Nick,Li, Chuang,Li, Tianjun,et al. Natural Explanation for 21 cm Absorption Signals via Axion-Induced Cooling[J]. PHYSICAL REVIEW LETTERS,2018,121(11):6.
APA	Houston, Nick,Li, Chuang,Li, Tianjun,Yang, Qiaoli,&Zhang, Xin.(2018).Natural Explanation for 21 cm Absorption Signals via Axion-Induced Cooling.PHYSICAL REVIEW LETTERS,121(11),6.
MLA	Houston, Nick,et al."Natural Explanation for 21 cm Absorption Signals via Axion-Induced Cooling".PHYSICAL REVIEW LETTERS 121.11(2018):6.

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