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Electromagnetic Proton Beam Instabilities in the Inner Heliosphere: Energy Transfer Rate, Radial Distribution, and Effective Excitation
Liu, Wen1,2; Zhao, Jinsong1,2,3; Xie, Huasheng4,5; Yao, Yuhang1,2; Wu, Dejin1; Lee, L. C.6,7
2021-10-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume920Issue:2Pages:19
AbstractDifferential flows among different ion species are often observed in the solar wind, and such ion differential flows can provide the free energy to drive Alfven/ion cyclotron and fast-magnetosonic/whistler instabilities. Previous works mainly focused on ion beam instability under the parameters representative of the solar wind nearby 1 au. In this paper we further study proton beam instability using the radial models of the magnetic field and plasma parameters in the inner heliosphere. We explore a comprehensive distribution of proton beam instability as functions of the heliocentric distance and the beam speed. We also perform a detailed analysis of the energy transfer between unstable waves and particles and quantify how much the free energy of the proton beam flows into unstable waves and other kinds of particle species (i.e., proton core, alpha particle, and electron). This work clarifies that both parallel and perpendicular electric fields are responsible for the excitation of oblique Alfven/ion cyclotron and oblique fast-magnetosonic/whistler instabilities. Moreover, this work proposes an effective growth length to estimate whether the instability is efficiently excited or not. It shows that oblique Alfven/ion cyclotron instability, oblique fast-magnetosonic/whistler instability, and oblique Alfven/ion beam instability can be efficiently driven by proton beams drifting at the speed similar to 600-1300 km s(-1) in the solar atmosphere. In particular, oblique Alfven/ion cyclotron waves driven in the solar atmosphere can be significantly damped therein, leading to solar corona heating. These results are helpful for understanding proton beam dynamics in the inner heliosphere and can be verified through in situ satellite measurements.
Funding OrganizationNNSFC ; NNSFC ; NNSFC ; NNSFC ; NNSFC ; NNSFC ; NNSFC ; NNSFC
DOI10.3847/1538-4357/ac133c
WOS KeywordELECTRON-TEMPERATURE ANISOTROPY ; SOLAR-WIND ; PROTON/PROTON INSTABILITIES ; LINEAR-STABILITY ; ION-CYCLOTRON ; TURBULENCE ; PLASMAS ; DRIVEN ; 0.3-AU
Language英语
Funding ProjectNNSFC[41974203] ; NNSFC[41531071] ; NNSFC[11673069]
Funding OrganizationNNSFC ; NNSFC ; NNSFC ; NNSFC ; NNSFC ; NNSFC ; NNSFC ; NNSFC
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000710698300001
PublisherIOP Publishing Ltd
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/74475
Collection中国科学院国家天文台
Corresponding AuthorZhao, Jinsong
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Key Lab Planetary Sci, Nanjing 210023, Peoples R China
2.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China
4.Hebei Key Lab Compact Fus, Langfang 065001, Peoples R China
5.ENN Sci & Technol Dev Co Ltd, Langfang 065001, Peoples R China
6.Acad Sinica, Inst Earth Sci, Taipei 11529, Taiwan
7.Macau Univ Sci & Technol, Space Sci Inst, Macau, Peoples R China
Recommended Citation
GB/T 7714
Liu, Wen,Zhao, Jinsong,Xie, Huasheng,et al. Electromagnetic Proton Beam Instabilities in the Inner Heliosphere: Energy Transfer Rate, Radial Distribution, and Effective Excitation[J]. ASTROPHYSICAL JOURNAL,2021,920(2):19.
APA Liu, Wen,Zhao, Jinsong,Xie, Huasheng,Yao, Yuhang,Wu, Dejin,&Lee, L. C..(2021).Electromagnetic Proton Beam Instabilities in the Inner Heliosphere: Energy Transfer Rate, Radial Distribution, and Effective Excitation.ASTROPHYSICAL JOURNAL,920(2),19.
MLA Liu, Wen,et al."Electromagnetic Proton Beam Instabilities in the Inner Heliosphere: Energy Transfer Rate, Radial Distribution, and Effective Excitation".ASTROPHYSICAL JOURNAL 920.2(2021):19.
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