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Electron and Positron Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station
AMS Collaboration
2014
发表期刊PHYSICAL REVIEW LETTERS
卷号113期号:12
通讯作者Aguilar, M (reprint author), Ctr Invest Energet Medioambientales & Tecnol CIEM, E-28040 Madrid, Spain.
摘要Precision measurements by the Alpha Magnetic Spectrometer on the International Space Station of the primary cosmic-ray electron flux in the range 0.5 to 700 GeV and the positron flux in the range 0.5 to 500 GeV are presented. The electron flux and the positron flux each require a description beyond a single power-law spectrum. Both the electron flux and the positron flux change their behavior at similar to 30 GeV but the fluxes are significantly different in their magnitude and energy dependence. Between 20 and 200 GeV the positron spectral index is significantly harder than the electron spectral index. The determination of the differing behavior of the spectral indices versus energy is a new observation and provides important information on the origins of cosmic-ray electrons and positrons.
关键词AMS-02 SPECTRA MODELS ORIGIN EXCESS
学科领域Physics
DOI10.1103/PhysRevLett.113.121102
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000345773700006
引用统计
被引频次:170[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/213826
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
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AMS Collaboration. Electron and Positron Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station[J]. PHYSICAL REVIEW LETTERS,2014,113(12).
APA AMS Collaboration.(2014).Electron and Positron Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station.PHYSICAL REVIEW LETTERS,113(12).
MLA AMS Collaboration."Electron and Positron Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station".PHYSICAL REVIEW LETTERS 113.12(2014).
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