Two-dimensional Modeling of the Tearing-mode-governed Magnetic Reconnection in the Large-scale Current Sheet above the Two-ribbon Flare | |
Zhang YN(张怡宁)2,3; Ye J(叶景)1,3; Mei ZX(梅志星)1,3; Li Y(李燕)1,3; Lin J(林隽)1,2,3 | |
刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS |
2022-08-01 | |
卷号 | 22期号:8 |
关键词 | magnetic reconnection magnetohydrodynamics (MHD) Sun: flares turbulence |
ISSN号 | 1674-4527 |
DOI | 10.1088/1674-4527/ac751a |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | We attempt to model magnetic reconnection during the two-ribbon flare in a gravitationally stratified solar atmosphere with the Lundquist number of S = 10(6) using 2D simulations. We found that the tearing mode instability leads to inhomogeneous turbulence inside the reconnecting current sheet (CS) and invokes the fast phase of reconnection. Fast reconnection brings an extra dissipation of magnetic field which enhances the reconnection rate in an apparent way. The energy spectrum in the CS shows a power law pattern and the dynamics of plasmoids govern the associated spectral index. We noticed that the energy dissipation occurs at a scale l (ko) of 100-200 km, and the associated CS thickness ranges from 1500 to 2500 km, which follows the Taylor scale l ( T ) = l (ko) S (1/6). The termination shock (TS) appears in the turbulent region above flare loops, which is an important contributor to heating flare loops. Substantial magnetic energy is converted into both kinetic and thermal energies via TS, and the cumulative heating rate is greater than the rate of the kinetic energy transfer. In addition, the turbulence is somehow amplified by TS, in which the amplitude is related to the local geometry of the TS. |
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 | 20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA |
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)[QYZDJ-SSWSLH012] ; National Natural Science Foundation of China (NSFC)[12073073] ; National Natural Science Foundation of China (NSFC)[11933009] ; National Natural Science Foundation of China (NSFC)[11973083] ; National Natural Science Foundation of China (NSFC)[U2031141] ; Yunling Scholar Project of Yunnan Province ; Yunnan Province Scientist Workshop of Solar Physics ; Applied Basic Research of Yunnan Province[202101AT070018] ; Applied Basic Research of Yunnan Province[2019FB005] |
WOS关键词 | EPISODIC JETS ; RESISTIVITY ; TURBULENCE ; THICKNESS ; MOTIONS ; LOOPS |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
WOS记录号 | WOS:000830160300001 |
资助机构 | Strategic Priority Research Programme of Chinese Academy of Sciences (CAS)[XDA17040507, QYZDJ-SSWSLH012] ; National Natural Science Foundation of China (NSFC)[12073073, 11933009, 11973083, U2031141] ; Yunling Scholar Project of Yunnan Province ; Yunnan Province Scientist Workshop of Solar Physics ; Applied Basic Research of Yunnan Province[202101AT070018, 2019FB005] |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/25381] |
专题 | 云南天文台_太阳物理研究组 |
通讯作者 | Ye J(叶景) |
作者单位 | 1.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100101, China 2.University of Chinese Academy of Sciences, Beijing 100049, China; 3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China; yj@ynao.ac.cn; |
推荐引用方式 GB/T 7714 | Zhang YN,Ye J,Mei ZX,et al. Two-dimensional Modeling of the Tearing-mode-governed Magnetic Reconnection in the Large-scale Current Sheet above the Two-ribbon Flare[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2022,22(8). |
APA | Zhang YN,Ye J,Mei ZX,Li Y,&Lin J.(2022).Two-dimensional Modeling of the Tearing-mode-governed Magnetic Reconnection in the Large-scale Current Sheet above the Two-ribbon Flare.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,22(8). |
MLA | Zhang YN,et al."Two-dimensional Modeling of the Tearing-mode-governed Magnetic Reconnection in the Large-scale Current Sheet above the Two-ribbon Flare".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 22.8(2022). |
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