Institutional Repository of Optical Astronomy Research Laboratory
| THE RELATIONSHIP BETWEEN THE PARTICLE INJECTION RATE AND THE DISPERSION OF THE SCATTERING ANGULAR DISTRIBUTION | |
Wang, Xin1,2,3 ; Wang, Na1,2; Yan, Yihua3
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| 2013-11-01 | |
| Source Publication | ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
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| Volume | 209Issue:1Pages:18 |
| Contribution Rank | 1 |
| Abstract | Although 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. |
| Keyword | Acceleration Of Particles Methods: Numerical Shock Waves Solar Wind Sun: Coronal Mass Ejections (Cmes) |
| Subtype | Article |
| WOS Headings | Science & Technology ; Physical Sciences |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | DIFFUSIVE SHOCK ACCELERATION ; EJECTION-DRIVEN SHOCKS ; CORONAL MASS EJECTIONS ; COSMIC-RAYS ; MONTE-CARLO ; ASTROPHYSICAL SHOCKS ; MAGNETIC-FIELD ; REMNANT SHOCKS ; OBLIQUE SHOCKS ; SIMULATIONS |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000326571000018 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/490 |
| Collection | 光学天文与技术应用研究室 其它 |
| Corresponding Author | Wang, Xin |
| Affiliation | 1.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 |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Corresponding Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Wang, Xin,Wang, Na,Yan, Yihua. THE RELATIONSHIP BETWEEN THE PARTICLE INJECTION RATE AND THE DISPERSION OF THE SCATTERING ANGULAR DISTRIBUTION[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2013,209(1):18. |
| APA | Wang, Xin,Wang, Na,&Yan, Yihua.(2013).THE RELATIONSHIP BETWEEN THE PARTICLE INJECTION RATE AND THE DISPERSION OF THE SCATTERING ANGULAR DISTRIBUTION.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,209(1),18. |
| 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):18. |
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| The Relationship Bet（1885KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-ND | View Application Full Text | |
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