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THE RELATIONSHIP BETWEEN THE PARTICLE INJECTION RATE AND THE DISPERSION OF THE SCATTERING ANGULAR DISTRIBUTION
Wang, Xin1,2,3; Wang, Na1,2; Yan, Yihua3; Wang,X
2013-11-01
Source PublicationASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
ISSN0067-0049
Volume209Issue:1
AbstractAlthough non-linear diffusive shock acceleration could be simulated by some well-established models, the particle injection rate is a priori assumed to proceed from thermal particles to the superthermal population in some models that use numerical simulations. In order to investigate the effect of anisotropy in particle scattering on the particle injection rate, we present a dynamical Monte Carlo simulation of a bow shock from Earth with different dispersions in the pitch-angle scattering. Since the particle injection rate is intrinsically defined by the prescribed scattering law in a Monte Carlo approach, we can directly study the relationship between the particle injection rate and the dispersion of the particle scattering angular distribution. As a result, we find that the particle injection rate increases as the dispersion of the scattering angular distribution increases. The shock energy spectrum also becomes harder as the scattering angular distribution varies from a situation with anisotropy to one with isotropy. If the particle injection rate can dominate the shock strength, that may imply that a low-speed coronal mass ejection (CME) could drive a strong shock and a high-speed CME could drive a weak shock.
KeywordAcceleration Of Particles Methods: Numerical Shock Waves Solar Wind Sun: Coronal Mass Ejections (Cmes)
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0067-0049/209/1/18
WOS KeywordDIFFUSIVE SHOCK ACCELERATION ; EJECTION-DRIVEN SHOCKS ; CORONAL MASS EJECTIONS ; COSMIC-RAYS ; MONTE-CARLO ; ASTROPHYSICAL SHOCKS ; MAGNETIC-FIELD ; REMNANT SHOCKS ; OBLIQUE SHOCKS ; SIMULATIONS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000326571000018
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/10101
Collection期刊(老文献)
Corresponding AuthorWang,X
Affiliation1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Wang, Xin,Wang, Na,Yan, Yihua,et al. THE RELATIONSHIP BETWEEN THE PARTICLE INJECTION RATE AND THE DISPERSION OF THE SCATTERING ANGULAR DISTRIBUTION[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2013,209(1).
APA Wang, Xin,Wang, Na,Yan, Yihua,&Wang,X.(2013).THE RELATIONSHIP BETWEEN THE PARTICLE INJECTION RATE AND THE DISPERSION OF THE SCATTERING ANGULAR DISTRIBUTION.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,209(1).
MLA Wang, Xin,et al."THE RELATIONSHIP BETWEEN THE PARTICLE INJECTION RATE AND THE DISPERSION OF THE SCATTERING ANGULAR DISTRIBUTION".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 209.1(2013).
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