'Excess' of primary cosmic ray electrons

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 暗物质和空间天文实验室

	'Excess' of primary cosmic ray electrons
	Li, Xiang 1,2; Shen, Zhao-Qiang 1,2; Lu, Bo-Qiang 1,3; Dong, Tie-Kuang1 ; Fan, Yi-Zhong1,4 ; Feng, Lei 1; Liu, Si-Ming1 ; Chang, Jin1,4
刊名	PHYSICS LETTERS B
	2015-10-07
卷号	749 页码:267-271
英文摘要	With the accurate cosmic ray (CR) electron and positron spectra (denoted as Phi(e-) and Phi(e+), respectively) measured by AMS-02 Collaboration, the difference between the electron and positron fluxes (i.e., Delta Phi = Phi(e-) - Phi(e+)), dominated by the propagated primary electrons, can be reliably inferred. In the standard model, the spectrum of propagated primary CR electrons at energies = 30 GeV softens with the increase of energy. The absence of any evidence for such a continuous spectral softening in Delta Phi strongly suggests a significant 'excess' of primary CR electrons and at energies of 100-400 GeV the identified excess component has a flux comparable to that of the observed positron excess. Middle-age but 'nearby' supernova remnants (e.g., Monogem and Geminga) are favored sources for such an excess. (C) 2015 The Authors. Published by Elsevier B.V.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields
研究领域[WOS]	Astronomy & Astrophysics ; Physics
关键词[WOS]	SUPERNOVA-REMNANTS ; POSITRON FRACTION ; DARK-MATTER ; SPECTRA ; PROPAGATION ; PULSARS ; LOOP ; CONSTRAINTS ; ENERGIES ; MODELS
收录类别	SCI
语种	英语
WOS记录号	WOS:000361562900037
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/16072]
专题	紫金山天文台_暗物质和空间天文实验室
作者单位	1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100012, Peoples R China 3.Nanjing Univ, Sch Phys, Nanjing 210092, Jiangsu, Peoples R China 4.Nanjing Univ, Collaborat Innovat Ctr Modern Astron & Space Expl, Nanjing 210046, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Li, Xiang,Shen, Zhao-Qiang,Lu, Bo-Qiang,et al. 'Excess' of primary cosmic ray electrons[J]. PHYSICS LETTERS B,2015,749:267-271.
APA	Li, Xiang.,Shen, Zhao-Qiang.,Lu, Bo-Qiang.,Dong, Tie-Kuang.,Fan, Yi-Zhong.,...&Chang, Jin.(2015).'Excess' of primary cosmic ray electrons.PHYSICS LETTERS B,749,267-271.
MLA	Li, Xiang,et al."'Excess' of primary cosmic ray electrons".PHYSICS LETTERS B 749(2015):267-271.