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| Numerical simulation and data analysis of the 23 July 2012 SEP event observed by ACE, STEREO-A, and STEREO-B | |
| Alternative Title | WOS:000536189300012;20203008959494 |
| Qin, G.; Qi, S. -Y. | |
| Source Publication | ASTRONOMY & ASTROPHYSICS
 |
| 2020 | |
| Volume | 637Pages:A48 |
| DOI | 10.1051/0004-6361/201936786 |
| ISSN | 0004-6361 |
| Language | 英语 |
| Keyword | shock waves turbulence scattering Sun coronal mass ejections (CMEs) Sun particle emission CORONAL MASS EJECTION SOLAR ENERGETIC PARTICLES HYDROMAGNETIC WAVE EXCITATION CHARGED-PARTICLES DRIVEN SHOCKS PERPENDICULAR DIFFUSION INTERPLANETARY SHOCKS ION-ACCELERATION COSMIC-RAYS PROPAGATION |
| Abstract | An extremely powerful, superfast interplanetary coronal mass ejection (ICME) from the Sun on 23 July 2012 was detected by widely separated multiple spacecraft, namely STEREO-A, STEREO-B, and ACE, together with the ICME-driven shock and associated solar energetic particles (SEPs). We use the Parker spiral magnetic field model to analyze the relationship between the propagation of the shock and the SEP flux. Furthermore, we simulate the SEP event by numerically solving the three-dimensional focused transport equation of SEPs considering the shock as the moving source of energetic particles. To deal with the fact that protons and electrons behave completely differently for both parallel and perpendicular diffusion, for simplicity, we use the same diffusion model format for the simulations of protons and electrons but with different parameters. We find that the analysis can qualitatively explain the important features of the SEP flux observed by the multiple spacecraft simultaneously. In addition, the numerical results for both energetic protons and electrons approximately agree with multi-spacecraft observations. |
| Indexed By | SCI ; EI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.nssc.ac.cn/handle/122/7691 |
| Collection | 中国科学院国家空间科学中心 |
| Affiliation | 1.[Qin, G.] Harbin Inst Technol, Sch Sci, Shenzhen 518055, Peoples R China 2.[Qi, S. -Y.] Henan Agr Univ, Coll Sci, Zhengzhou 450002, Peoples R China 3.[Qi, S. -Y.] Chinese Acad Sci, State Key Lab Space Weather, Natl Space Sci Ctr, Beijing 100190, Peoples R China 4.[Qi, S. -Y.] Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Qin, G.,Qi, S. -Y.. Numerical simulation and data analysis of the 23 July 2012 SEP event observed by ACE, STEREO-A, and STEREO-B[J]. ASTRONOMY & ASTROPHYSICS,2020,637:A48. |
| APA | Qin, G.,&Qi, S. -Y..(2020).Numerical simulation and data analysis of the 23 July 2012 SEP event observed by ACE, STEREO-A, and STEREO-B.ASTRONOMY & ASTROPHYSICS,637,A48. |
| MLA | Qin, G.,et al."Numerical simulation and data analysis of the 23 July 2012 SEP event observed by ACE, STEREO-A, and STEREO-B".ASTRONOMY & ASTROPHYSICS 637(2020):A48. |
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