Numerical Studies of Magnetic Reconnection and Heating Mechanisms for the Ellerman Bomb
文献类型：期刊论文
| 作者 | Liu MY(刘明玉)3,4 ; Ni L(倪蕾)2,3,4; Cheng GC(程冠冲)3,4; Ziegler, Udo1; Lin J(林隽)2,3,4
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| 出版日期 | 2023-03-01 |
| 卷号 | 23期号:3 |
| ISSN号 | 1674-4527 |
| 关键词 | magnetic reconnection magnetohydrodynamics (MHD) Sun: chromosphere Sun: activity |
| DOI | 10.1088/1674-4527/acafc3 |
| 产权排序 | 第1完成单位 |
| 文献子类 | Article |
| 英文摘要 | An Ellerman Bomb (EB) is a kind of small scale reconnection event, which is ubiquitously formed in the upper photosphere or the lower chromosphere. The low temperature (<10,000 K) and high density (similar to 10(19)-10(22)) plasma there makes the magnetic reconnection process strongly influenced by partially ionized effects and radiative cooling. This work studies the high beta magnetic reconnection near the solar temperature minimum region based on high-resolution 2.5D magnetohydrodynamics simulations. The time-dependent ionization degree of hydrogen and helium are included to realize more realistic diffusivities, viscosity and radiative cooling in simulations. Numerical results show that the reconnection rate is smaller than 0.01 and decreases with time during the early quasi-steady stage, then sharply increases to a value above 0.05 in the later stage as the plasmoid instability takes place. Both the large value of eta (en) (magnetic diffusion caused by the electron-neutral collision) and the plasmoid instability contribute to the fast magnetic reconnection in the EB-like event. The interactions and coalescence of plasmoids strongly enhance the local compression heating effect, which becomes the dominant mechanism for heating in EBs after plasmoid instability appears. However, the Joule heating contributed by eta (en) can play a major role to heat plasmas when the magnetic reconnection in EBs is during the quasi-steady stage with smaller temperature increases. The results also show that the radiative cooling effect suppresses the temperature increase to a reasonable range, and increases the reconnection rate and generation of thermal energy. |
| 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 |
| WOS关键词 | TRANSPORT-COEFFICIENTS ; SOLAR CHROMOSPHERE ; FLARE ; SIMULATIONS ; ATMOSPHERE ; HYDROGEN ; IRIS ; MHD |
| 资助项目 | National Key R&D Program of China[2022YFF0503800] ; National Natural Science Foundation of China (NSFC)[11973083] ; National Natural Science Foundation of China (NSFC)[11933009] ; Strategic Priority Research Program of CAS[XDA17040507] ; Youth Innovation Promotion Association CAS[Y2021024] ; Applied Basic Research of Yunnan Province in China[2018FB009] ; Yunling Talent Project for the Youth ; Group for Innovation of Yunnan Province[2018HC023] ; Yunling Scholar Project of the Yunnan Province ; Yunnan Province Scientist Workshop of Solar Physics ; Yunnan Key Laboratory of Solar Physics and Space Exploration[202205AG070009] |
| 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:000943835300001 |
| 资助机构 | National Key R&D Program of China[2022YFF0503800] ; National Natural Science Foundation of China (NSFC)[11973083, 11933009] ; Strategic Priority Research Program of CAS[XDA17040507] ; Youth Innovation Promotion Association CAS[Y2021024] ; Applied Basic Research of Yunnan Province in China[2018FB009] ; Yunling Talent Project for the Youth ; Group for Innovation of Yunnan Province[2018HC023] ; Yunling Scholar Project of the Yunnan Province ; Yunnan Province Scientist Workshop of Solar Physics ; Yunnan Key Laboratory of Solar Physics and Space Exploration[202205AG070009] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/25874]  |
| 专题 | 云南天文台_太阳物理研究组 |
| 通讯作者 | Ni L(倪蕾) |
| 作者单位 | 1.Astrophysikalisches Institut Potsdam D-14482 Potsdam, Germany 2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100101, China; 3.University of Chinese Academy of Sciences, Beijing 100049, China; 4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China; leini@ynao.ac.cn; |
| 推荐引用方式 GB/T 7714 | Liu MY,Ni L,Cheng GC,et al. Numerical Studies of Magnetic Reconnection and Heating Mechanisms for the Ellerman Bomb[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2023,23(3). |
| APA | Liu MY,Ni L,Cheng GC,Ziegler, Udo,&Lin J.(2023).Numerical Studies of Magnetic Reconnection and Heating Mechanisms for the Ellerman Bomb.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,23(3). |
| MLA | Liu MY,et al."Numerical Studies of Magnetic Reconnection and Heating Mechanisms for the Ellerman Bomb".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 23.3(2023). |
入库方式： OAI收割
来源：云南天文台
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