NSSC OpenIR  > 空间科学部
A Numerical Study of Cosmic Proton Modulation Using AMS-02 Observations
Luo, Xi; Potgieter, Marius S.; Bindi, Veronica; Zhang, Ming; Feng, Xueshang
Department空间科学部
Source PublicationASTROPHYSICAL JOURNAL
2019
Volume878Issue:1Pages:6
DOI10.3847/1538-4357/ab1b2a
ISSN0004-637X
Language英语
Keywordcosmic rays diffusion Sun: activity Sun: heliosphere
AbstractSince 2011 May, the Alpha Magnetic Spectrometer (AMS-02) on board the International Space Station has provided monthly cosmic proton fluxes for various low-rigidity levels (P < 50 GV). These precise measurements, in terms of high time and rigidity resolution, have provided a good opportunity to study cosmic ray modulation over a wide range of rigidities, together with transient events. Subsequently, a comprehensive numerical transport model has been constructed, based on Parker's transport equation that includes all known physical mechanisms: diffusion, convection, drift, and adiabatic cooling. Propagating diffusion barriers to simulate Forbush decreases (Fds) and global merged interaction regions (GMIRs) have also been incorporated: (1) utilizing a time-varying tilt angle of the heliospheric current sheet and interplanetary magnetic field, the general trend of the time variation of cosmic proton fluxes has been reproduced; (2) the Fd events in 2011 October and 2012 March have been simulated, and the first GMIR event in solar cycle 24 has also been simulated and studied; and (3) the rigidity dependence of the proton fluxes, as revealed by the AMS-02 data, has been reproduced with the appropriate chosen rigidity dependent diffusion coefficients. In order to reproduce the proton observations, we find that apart from the transient events, the derived mean free paths in interplanetary space also need to be changed with time.
Indexed BySCI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7043
Collection空间科学部
Recommended Citation
GB/T 7714
Luo, Xi,Potgieter, Marius S.,Bindi, Veronica,et al. A Numerical Study of Cosmic Proton Modulation Using AMS-02 Observations[J]. ASTROPHYSICAL JOURNAL,2019,878(1):6.
APA Luo, Xi,Potgieter, Marius S.,Bindi, Veronica,Zhang, Ming,&Feng, Xueshang.(2019).A Numerical Study of Cosmic Proton Modulation Using AMS-02 Observations.ASTROPHYSICAL JOURNAL,878(1),6.
MLA Luo, Xi,et al."A Numerical Study of Cosmic Proton Modulation Using AMS-02 Observations".ASTROPHYSICAL JOURNAL 878.1(2019):6.
Files in This Item:
File Name/Size DocType Version Access License
201987816.pdf(1781KB)期刊论文出版稿开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Luo, Xi]'s Articles
[Potgieter, Marius S.]'s Articles
[Bindi, Veronica]'s Articles
Baidu academic
Similar articles in Baidu academic
[Luo, Xi]'s Articles
[Potgieter, Marius S.]'s Articles
[Bindi, Veronica]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Luo, Xi]'s Articles
[Potgieter, Marius S.]'s Articles
[Bindi, Veronica]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.