Constraints on the dark matter annihilation scenario of Fermi 130 GeV gamma-ray line emission by continuous gamma-rays, Milky Way halo, galaxy clusters and dwarf galaxies observations

	Constraints on the dark matter annihilation scenario of Fermi 130 GeV gamma-ray line emission by continuous gamma-rays, Milky Way halo, galaxy clusters and dwarf galaxies observations
	Huang, Xiaoyuan 1; Yuan, Qiang 2,3; Yin, Peng-Fei 2; Bi, Xiao-Jun 2; Chen, Xuelei1
刊名	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
	2012-11-01
期号	11
关键词	dark matter theory gamma ray experiments
英文摘要	It was recently reported that there may exist monochromatic gamma-ray emission at similar to 130 GeV from the Galactic center in the Fermi Large Area Telescope data, which might be related with dark matter (DM) annihilation. In this work we carry out a comprehensive check of consistency of the results with the DM annihilation scenario, using the 3.7 yrs Fermi observation of the inner Galaxy, Galactic halo, clusters of galaxies and dwarf galaxies. The results found are as follows. 1) Very strong constraints on the DM annihilation into continuous similar to-rays from the Galactic center are set, which are as stringent as the "natural" scale assuming thermal freeze-out of DM. Such limit sets strong constraint on the DM models to explain the line emission. 2) No line emission from the Galactic halo is found in the Fermi data, and the constraints on line emission is marginally consistent with the DM annihilation interpretation of the similar to 130 GeV line emission from the inner Galaxy. 3) No line emission from galaxy clusters and dwarf galaxies is detected, although possible concentration of photons from clusters in 120-140GeV is revealed. The constraints from clusters and dwarf galaxies are weak and consistent with the DM annihilation scenario to explain the similar to 130 GeV line emission.
收录类别	SCI
语种	英语
WOS记录号	WOS:000312263500031
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/6178]
专题	国家天文台_星系宇宙学研究部
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Key Lab Particle Astrophys, Inst High Energy Phys, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Huang, Xiaoyuan,Yuan, Qiang,Yin, Peng-Fei,et al. Constraints on the dark matter annihilation scenario of Fermi 130 GeV gamma-ray line emission by continuous gamma-rays, Milky Way halo, galaxy clusters and dwarf galaxies observations[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2012(11).
APA	Huang, Xiaoyuan,Yuan, Qiang,Yin, Peng-Fei,Bi, Xiao-Jun,&Chen, Xuelei.(2012).Constraints on the dark matter annihilation scenario of Fermi 130 GeV gamma-ray line emission by continuous gamma-rays, Milky Way halo, galaxy clusters and dwarf galaxies observations.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(11).
MLA	Huang, Xiaoyuan,et al."Constraints on the dark matter annihilation scenario of Fermi 130 GeV gamma-ray line emission by continuous gamma-rays, Milky Way halo, galaxy clusters and dwarf galaxies observations".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .11(2012).