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The Effect of Plasma-β on the Heating Mechanisms during Magnetic Reconnection in Partially Ionized Low Solar Atmosphere

文献类型：期刊论文

作者Zafar, Abdullah5; Ni L(倪蕾)3,4,5; Kang KF(康凯锋)4,5; Cheng GC(程冠冲)4,5; Ye J(叶景)3,4,5; Lin J(林隽)3,4,5; Ali, Ahmad2; Imtiaz, Nadia1
刊名ASTROPHYSICAL JOURNAL
出版日期2025-08-01
卷号988期号:2
ISSN号0004-637X
DOI10.3847/1538-4357/ade714
产权排序第1完成单位
文献子类Article
英文摘要We performed numerical simulations of magnetic reconnection with different strengths of magnetic fields from the solar photosphere to the upper chromosphere. The main emphasis is to identify dominant mechanisms for heating plasmas in the reconnection region under different plasma-beta conditions in the partially ionized low solar atmosphere. The numerical results show that more plasmoids are generated in a lower beta reconnection event. The frequent coalescence of these plasmoids leads to a significant enhancement of turbulence and compression heating, which becomes the dominant mechanism for heating plasma in a lower plasma-beta reconnection process. The average power density of the compression heating (Q(comp)) decreases with increasing initial plasma-beta as a power function: Q(comp) similar to beta(-a)(0), where the value a is 1.9 in the photosphere and decreases to about 1.29 in the upper a comp chromosphere. In the photosphere and lower chromosphere, the Joule heating contributed by electron-neutral collisions Q(en) = eta(en)J(2) eventually dominates over the compression heating when the initial plasma-beta is larger than the critical value beta(0-critical) = 8. In the upper chromosphere, the ambipolar diffusion heating and the viscous heating will become equally important as the compression heating when the initial plasma-beta is larger than the critical value beta(0-critical) = 0.5. These results indicate that the compression heating caused by turbulent reconnection mediated with plasmoids is likely the major heating mechanism for the small-scale reconnection events with stronger magnetic fields, such as active region Ellerman bombs (EBs) and UV bursts. However, the heating caused by the partial ionization effects can not be ignored for those reconnection events with weaker magnetic fields, such as quiet Sun EBs and cold surges.
学科主题天文学 ; 太阳与太阳系
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词TRANSPORT-COEFFICIENTS ; CHROMOSPHERE ; HYDROGEN ; SIMULATIONS ; MODELS ; BOMBS
资助项目National Key R&D Program of China; NSFC[12373060]; NSFC[11933009]; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0560000]; Basic Research of Yunnan Province in China[202401AS070044]; Yunling Talent Project for the Youth; Yunnan Key Laboratory of Solar Physics and Space Science
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001537197200001
出版者IOP Publishing Ltd
资助机构National Key R&D Program of China ; NSFC[12373060, 11933009] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0560000] ; Basic Research of Yunnan Province in China[202401AS070044] ; Yunling Talent Project for the Youth ; Yunnan Key Laboratory of Solar Physics and Space Science[202205AG070009] ; [2022YFF0503800] ; [2022YFF0503804] ; [2022YFF0503003] ; [2022YFF0503000]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28474]  
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.Theoretical Physics Division, PINSTECH, Islamabad, Pakistan
2.Pakistan Tokamak Plasma Research Institute, Islamabad 3329, Pakistan;
3.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China;
4.Yunnan Key Laboratory of Solar Physics and Space Science, Kunming 650216, People’s Republic of China;
5.Yunnan Observatories, Chinese Academy of Science, Kunming, Yunnan 650216, People’s Republic of China; leini@ynao.ac.cn;
推荐引用方式
GB/T 7714		 Zafar, Abdullah,Ni L,Kang KF,et al. The Effect of Plasma-β on the Heating Mechanisms during Magnetic Reconnection in Partially Ionized Low Solar Atmosphere[J]. ASTROPHYSICAL JOURNAL,2025,988(2).
APA Zafar, Abdullah.,倪蕾.,康凯锋.,程冠冲.,叶景.,...&Imtiaz, Nadia.(2025).The Effect of Plasma-β on the Heating Mechanisms during Magnetic Reconnection in Partially Ionized Low Solar Atmosphere.ASTROPHYSICAL JOURNAL,988(2).
MLA Zafar, Abdullah,et al."The Effect of Plasma-β on the Heating Mechanisms during Magnetic Reconnection in Partially Ionized Low Solar Atmosphere".ASTROPHYSICAL JOURNAL 988.2(2025).

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来源：云南天文台

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