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Modulation of Galactic Cosmic Rays in the Inner Heliosphere, Comparing with PAMELA Measurements
Qin, G.; Shen, Z. -N.; Qin, G (reprint author), Harbin Inst Technol, Sch Sci, Shenzhen 518055, Peoples R China.; Qin, G (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing 100190, Peoples R China.; Qin, G (reprint author), Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China.
作者部门空间科学部
发表期刊ASTROPHYSICAL JOURNAL
2017
卷号846期号:1
ISSN0004-637X
语种英语
关键词Cosmic Rays Sun: Activity Sun: Heliosphere Turbulence
摘要We develop a numerical model to study the time-dependent modulation of galactic cosmic rays in the inner heliosphere. In the model, a time-delayed modified Parker heliospheric magnetic field (HMF) and a new diffusion coefficient model, NLGCE-F, from Qin & Zhang, are adopted. In addition, the latitudinal dependence of magnetic turbulence magnitude is assumed to be similar to(1 + sin(2) theta)/2 from the observations of Ulysses, and the radial dependence is assumed to be similar to r(S), where we choose an expression of S as a function of the heliospheric current sheet tilt angle. We show that the analytical expression used to describe the spatial variation of HMF turbulence magnitude agrees well with the Ulysses, Voyager 1, and Voyager 2 observations. By numerically calculating the modulation code, we get the proton energy spectra as a function of time during the recent solar minimum, it is shown that the modulation results are consistent with the Payload for Antimatter-Matter Exploration and Light-nuclei Astrophysics measurements.
收录类别SCI
文献类型期刊论文
条目标识符http://ir.nssc.ac.cn/handle/122/6037
专题空间科学部
通讯作者Qin, G (reprint author), Harbin Inst Technol, Sch Sci, Shenzhen 518055, Peoples R China.; Qin, G (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing 100190, Peoples R China.; Qin, G (reprint author), Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China.
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Qin, G.,Shen, Z. -N.,Qin, G ,et al. Modulation of Galactic Cosmic Rays in the Inner Heliosphere, Comparing with PAMELA Measurements[J]. ASTROPHYSICAL JOURNAL,2017,846(1).
APA Qin, G.,Shen, Z. -N.,Qin, G ,Qin, G ,&Qin, G .(2017).Modulation of Galactic Cosmic Rays in the Inner Heliosphere, Comparing with PAMELA Measurements.ASTROPHYSICAL JOURNAL,846(1).
MLA Qin, G.,et al."Modulation of Galactic Cosmic Rays in the Inner Heliosphere, Comparing with PAMELA Measurements".ASTROPHYSICAL JOURNAL 846.1(2017).
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