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Particle Acceleration at the Pileup Collision of the Twin Shock

文献类型：期刊论文

作者Wang, Xin2,3,4,5,6; Giacalone, Joe5; Yan, Yihua4; Ding, Mingde3; Li, Chuan3; Lu, Hong1; Shan, Hao2,6
刊名ASTROPHYSICAL JOURNAL
出版日期2019-11-01
卷号885期号:1页码:66
关键词acceleration of particles shock waves solar wind Sun: coronal mass ejections (CMEs)
ISSN号0004-637X
DOI10.3847/1538-4357/ab4655
产权排序1
英文摘要Ground-level enhancement (GLE) events are often associated with large gradual solar events such as fast coronal mass ejections (CMEs), but not all fast CMEs lead to GLE events. Is there a type of coordinated CME that could produce GLEs with larger intensity and higher energies than those in the normal fast isolated CMEs? Here we propose a twin-shock scenario driven by the twin CME coordinately, in which the posterior shock catches up with the preceding shock and has a pileup collision. In the present study, we chose the first GLE event of the solar cycle 24 occurring on 2012 May 17 as an example to investigate the probable association with the twin-shock scenario. We use a dynamic Monte Carlo method to examine the energy spectrum with relevance to the GLE event. In the twin-shock scenario, the seed energetic particles produced by the normal preceding shock can be injected into the posterior shock for reacceleration efficiently. As a result, we obtain the detailed energy spectrum of the solar energetic particles (SEPs) with different behaviors at the related episodes of the twin-shock evolution. Therefore, we predict that the pileup collision of the twin shock would dominate a concave energy spectral slope in the 2012 May 17 SEP event.
WOS关键词HYDROMAGNETIC WAVE EXCITATION ; EJECTION-DRIVEN SHOCKS ; CORONAL MASS EJECTIONS ; SOLAR ENERGETIC PARTICLES ; EARTHS BOW SHOCK ; ION-ACCELERATION ; MONTE-CARLO ; RADIATION ; TRANSPORT ; UPSTREAM
资助项目Xinjiang Natural Science Foundation[2019D01A100] ; Xinjiang Heaven Lake Hundred-Talent Program ; NSFC[11673056] ; CAS Key Laboratory of Solar Activity, National Astronomical Observatories ; Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education ; China Scholarship Council (CSC) ; Supercomputer Center of University of Arizona
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000498641700002
出版者IOP PUBLISHING LTD
资助机构Xinjiang Natural Science Foundation ; Xinjiang Heaven Lake Hundred-Talent Program ; NSFC ; CAS Key Laboratory of Solar Activity, National Astronomical Observatories ; Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education ; China Scholarship Council (CSC) ; Supercomputer Center of University of Arizona
源URL[http://ir.xao.ac.cn/handle/45760611-7/3284]  
专题太阳物理研究室_太阳物理研究团组
通讯作者Wang, Xin
作者单位1.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China
3.Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210093, Jiangsu, Peoples R China
4.Natl Astron Observ, CAS Key Lab Solar Act, Beijing 100012, Peoples R China
5.Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA
6.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Xin,Giacalone, Joe,Yan, Yihua,et al. Particle Acceleration at the Pileup Collision of the Twin Shock[J]. ASTROPHYSICAL JOURNAL,2019,885(1):66.
APA Wang, Xin.,Giacalone, Joe.,Yan, Yihua.,Ding, Mingde.,Li, Chuan.,...&Shan, Hao.(2019).Particle Acceleration at the Pileup Collision of the Twin Shock.ASTROPHYSICAL JOURNAL,885(1),66.
MLA Wang, Xin,et al."Particle Acceleration at the Pileup Collision of the Twin Shock".ASTROPHYSICAL JOURNAL 885.1(2019):66.

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来源：新疆天文台

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