Natural Explanation for 21 cm Absorption Signals via Axion-Induced Cooling

doi:10.1103/PhysRevLett.121.111301

ITP OpenIR > SCI期刊论文

	Houston, N ; Li, C 1; Li, TJ; Yang, QL ; Zhang, X 3,4
	Natural Explanation for 21 cm Absorption Signals via Axion-Induced Cooling
Source Publication	PHYSICAL REVIEW LETTERS
Language	英语
Keyword	CP INVARIANCE PARTICLES
Abstract	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.
	2018
ISSN	0031-9007
Volume	121 Issue:11 Pages:111301
Subject Area	Physics
MOST Discipline Catalogue	Physics, Multidisciplinary
DOI	10.1103/PhysRevLett.121.111301
Indexed By	SCIE
Citation statistics	Cited Times:14[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.itp.ac.cn/handle/311006/22819
Collection	SCI期刊论文
Affiliation	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
Recommended Citation 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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