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Kinetic Properties of an Interplanetary Shock Propagating inside a Coronal Mass Ejection
Liu, Mingzhe; Liu, Ying D.; Yang, Zhongwei; Wilson, L. B., III; Hu, Huidong; Liu, YD (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing 100190, Peoples R China.; Liu, YD (reprint author), Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
Department空间科学部
Source PublicationASTROPHYSICAL JOURNAL LETTERS
2018
Volume859Issue:1Pages:L4
ISSN2041-8205
Language英语
KeywordInstabilities Shock Waves Sun: Coronal Mass Ejections (Cmes) Waves
AbstractWe investigate the kinetic properties of a typical fast-mode shock inside an interplanetary coronal mass ejection (ICME) observed on 1998 August 6 at 1 au, including particle distributions and wave analysis with the in situ measurements from Wind. Key results are obtained concerning the shock and the shock-ICME interaction at kinetic scales: (1) gyrating ions, which may provide energy dissipation at the shock in addition to wave-particle interactions, are observed around the shock ramp; (2) despite the enhanced proton temperature anisotropy of the shocked plasma, the low plasma beta inside the ICME constrains the shocked plasma under the thresholds of the ion cyclotron and mirror-mode instabilities; (3) whistler heat flux instabilities, which can pitch-angle scatter halo electrons through a cyclotron resonance, are observed around the shock, and can explain the disappearance of bi-directional electrons (BDEs) inside the ICME together with normal betatron acceleration; (4) whistler waves near the shock are likely associated with the whistler heat flux instabilities excited at the shock ramp, which is consistent with the result that the waves may originate from the shock ramp; (5) the whistlers share a similar characteristic with the shocklet whistlers observed by Wilson et al., providing possible evidence that the shock is decaying because of the strong magnetic field inside the ICME.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/6325
Collection空间科学部
Corresponding AuthorLiu, YD (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing 100190, Peoples R China.; Liu, YD (reprint author), Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
Recommended Citation
GB/T 7714
Liu, Mingzhe,Liu, Ying D.,Yang, Zhongwei,et al. Kinetic Properties of an Interplanetary Shock Propagating inside a Coronal Mass Ejection[J]. ASTROPHYSICAL JOURNAL LETTERS,2018,859(1):L4.
APA Liu, Mingzhe.,Liu, Ying D..,Yang, Zhongwei.,Wilson, L. B., III.,Hu, Huidong.,...&Liu, YD .(2018).Kinetic Properties of an Interplanetary Shock Propagating inside a Coronal Mass Ejection.ASTROPHYSICAL JOURNAL LETTERS,859(1),L4.
MLA Liu, Mingzhe,et al."Kinetic Properties of an Interplanetary Shock Propagating inside a Coronal Mass Ejection".ASTROPHYSICAL JOURNAL LETTERS 859.1(2018):L4.
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