Numerical study of the cascading energy conversion of the reconnection current sheet in solar eruptions
文献类型:期刊论文
作者 | Ye J(叶景)1,2,3; Shen, Chengcai4; Raymond, John C.4; Lin J(林隽)1,2; Ziegler, Udo5 |
刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY |
出版日期 | 2019 |
卷号 | 482期号:1页码:588-605 |
ISSN号 | 0035-8711 |
关键词 | magnetic reconnection MHD turbulence Sun: coronal mass ejections (CMEs) |
DOI | 10.1093/mnras/sty2716 |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | Magnetic reconnection plays an important role in the energy conversion during solar eruptions. In this work, we present a resistive magnetohydrodynamical study (2.5D) of a flux rope eruption based on the Lin and Forbes model regarding cascading reconnection. We use a second-order Godunov scheme code, to better understand the physical mechanisms responsible for high reconnection rates and the internal structure, particularly in chaotic or turbulent regions, of the coronal mass ejection (CME)/flare current sheet (CS). Two sets of simulations with Lundquist numbers of 1.18 x 10(5) and 2.35 x 10(5) in the vicinity of the CS, generating a slow CME and a moderate one, show global dynamic features largely consistent with the flare model. Looking into the fine structure of the CS, magnetic reconnection employs simultaneously the Sweet-Parker mode and time-dependent small-scale Petschek patterns in the early stage. As the flux rope rises, the outflow region becomes turbulent, which further enhances the reconnection rates. Our results show that coalescence and fusion processes of plasmoids provide a large number of small, transient local diffusion regions to dissipate magnetic energy, and confirm that the dissipation starts at macro-MHD scales rather than ion inertial lengths. The two runs have the same range of the local reconnection rates (10(-4)-0.3) relevant to CMEs. The fast rates are closely proportional to the square of the aspect ratio of multiple small-scale CSs. The topology of the magnetic field and the turbulence spectrum of the energy cascade are statistically addressed as well. |
学科主题 | 天文学 ; 太阳与太阳系 ; 太阳物理学 |
URL标识 | 查看原文 |
出版地 | GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND |
WOS关键词 | CORONAL MASS EJECTION ; MAGNETIC RECONNECTION ; FLUX-ROPE ; TRANSPORT SCHEME ; MODEL ; FLARE ; ACCELERATION ; DISRUPTION ; SIMULATION ; ENERGETICS |
资助项目 | Strategic Priority Research Programme of Chinese Academy of Sciences (CAS)[XDA17040507] ; Strategic Priority Research Programme of Chinese Academy of Sciences (CAS)[XDA15010900] ; Strategic Priority Research Programme of Chinese Academy of Sciences (CAS)[QYZDJ-SSWSLH012] ; Programme 973 grant[2013CBA01503] ; National Natural Science Foundation of China (NSFC)[11603070] ; National Natural Science Foundation of China (NSFC)[11333007] ; National Natural Science Foundation of China (NSFC)[U1631130] ; National Science Foundation of U.S. grants[AGS-1358342] ; National Science Foundation of U.S. grants[AGS-1723313] ; National Science Foundation of U.S. grants[AGS-1723425] ; NASA LWS programme through ROSES[NNH13ZDA001N] ; NSFC-Guangdong Joint Fund[nsfc2015 461] ; project of the Group for Innovation of Yunnan Province |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | OXFORD UNIV PRESS |
WOS记录号 | WOS:000454575300042 |
资助机构 | Strategic Priority Research Programme of Chinese Academy of Sciences (CAS)[XDA17040507, XDA15010900, QYZDJ-SSWSLH012] ; Programme 973 grant[2013CBA01503] ; National Natural Science Foundation of China (NSFC)[11603070, 11333007, U1631130] ; National Science Foundation of U.S. grants[AGS-1358342, AGS-1723313, AGS-1723425] ; NASA LWS programme through ROSES[NNH13ZDA001N] ; NSFC-Guangdong Joint Fund[nsfc2015 461] ; project of the Group for Innovation of Yunnan Province |
源URL | [http://ir.ynao.ac.cn/handle/114a53/18831] |
专题 | 云南天文台_太阳物理研究组 |
通讯作者 | Ye J(叶景); Lin J(林隽) |
作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, PO Box 110, Kunming, Yunnan 650216, China 2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, China 3.Key Laboratory of Modern Astronomy and Astrophysical, the Ministry of Education, Nanjing University, Nanjing, 210000, China 4.Smithsonian Astrophysical Observatory, 60 Garden Street, MS 15, Cambridge, MA 02138, US 5.Astrophysikalisches Institut Potsdam, D-14482 Potsdam, Germany |
推荐引用方式 GB/T 7714 | Ye J,Shen, Chengcai,Raymond, John C.,et al. Numerical study of the cascading energy conversion of the reconnection current sheet in solar eruptions[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,482(1):588-605. |
APA | Ye J,Shen, Chengcai,Raymond, John C.,Lin J,&Ziegler, Udo.(2019).Numerical study of the cascading energy conversion of the reconnection current sheet in solar eruptions.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,482(1),588-605. |
MLA | Ye J,et al."Numerical study of the cascading energy conversion of the reconnection current sheet in solar eruptions".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 482.1(2019):588-605. |
入库方式: OAI收割
来源:云南天文台
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