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Parallel-propagating Waves and Instabilities in Plasmas with Streaming Proton and Alpha Particles
Liu, Zhifeng1,2; Zhao, Jinsong2; Sun, Heyu2,3; Xiang, Liang2,3; Liu, Wen2,3; Lu, Jianyong1; Zhou, Weican1
2019-04-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume874Issue:2Pages:18
Corresponding AuthorZhao, Jinsong(js_zhao@pmo.ac.cn)
AbstractStreaming proton and alpha particles are permeating in the solar wind and solar atmosphere. These particles considerably affect the normal waves in electron-proton-alpha plasmas, especially inducing electrostatic and electromagnetic ion/ion beam instabilities. This paper gives a comprehensive investigation on stable and unstable parallel-propagating wave modes in plasmas with streaming proton and alpha particles. It illustrates that at a large beam velocity condition, the backward-propagating fast-magnetosonic/whistler wave (Alfven/proton-beam or Alfven/alpha beam mode wave) turns to forward propagation in the core proton rest frame, and couples with forward-propagating Alfven/alpha-cyclotron and alpha-cyclotron/proton-cyclotron waves (fast-magnetosonic/whistler wave), triggering Alfven/proton-cyclotron and fast-magnetosonic/whistler instabilities. Furthermore, as perpendicular thermal pressures of proton and alpha beams are larger than their parallel thermal pressures, several new electromagnetic instabilities arise in the case of the low ion streaming velocity, where both Alfven/protoncyclotron and fast-magnetosonic/whistler instabilities are stable. This paper also predicts the possible ion/ion electromagnetic instabilities in solar coronal holes, which can give a constraint on the ion differential drift velocity therein.
Keywordinstabilities plasmas waves
DOI10.3847/1538-4357/ab0896
WOS KeywordION-BEAM INSTABILITIES ; ELECTROMAGNETIC PROTON/PROTON INSTABILITIES ; WIND HELIUM ABUNDANCE ; SOLAR-WIND ; LOW-FREQUENCY ; ALFVEN WAVES ; ACCELERATION ; DRIVEN ; SPEED ; EXCITATION
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000462885200010
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/24235
Collection中国科学院紫金山天文台
Corresponding AuthorZhao, Jinsong
Affiliation1.Nanjing Univ Informat Sci & Technol, Sch Math & Stat, Inst Space Weather, Nanjing 210044, Jiangsu, Peoples R China
2.Chinese Acad Sci, Purple Mt Observ, Key Lab Planetary Sci, Nanjing 210008, Jiangsu, Peoples R China
3.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China
Recommended Citation
GB/T 7714
Liu, Zhifeng,Zhao, Jinsong,Sun, Heyu,et al. Parallel-propagating Waves and Instabilities in Plasmas with Streaming Proton and Alpha Particles[J]. ASTROPHYSICAL JOURNAL,2019,874(2):18.
APA Liu, Zhifeng.,Zhao, Jinsong.,Sun, Heyu.,Xiang, Liang.,Liu, Wen.,...&Zhou, Weican.(2019).Parallel-propagating Waves and Instabilities in Plasmas with Streaming Proton and Alpha Particles.ASTROPHYSICAL JOURNAL,874(2),18.
MLA Liu, Zhifeng,et al."Parallel-propagating Waves and Instabilities in Plasmas with Streaming Proton and Alpha Particles".ASTROPHYSICAL JOURNAL 874.2(2019):18.
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