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Numerical simulations of magnetic reconnection in the lower solar atmosphere
Xu, Xiao-Yan1,2; Fang, Cheng2; Ding, Ming-De2; Gao, Dan-Hui2
2011-02-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume11Issue:2Pages:225-236
AbstractObservations indicate that Ellerman bombs (EBs) and chromospheric microflares both occur in the lower solar atmosphere, and share many common features, such as temperature enhancements, accompanying jet-like mass motions, short lifetime, and so on. These strongly suggest that EBs and chromospheric microflares could both probably be induced by magnetic reconnection in the lower solar atmosphere. With gravity, ionization and radiation considered, we perform two-dimensional numerical simulations of magnetic reconnection in the lower solar atmosphere. The influence of different parameters, such as intensity of the magnetic field and anomalous resistivity, on the results are investigated. Our result demonstrates that the temperature increases are mainly due to the joule dissipation caused by magnetic reconnection. The spectral profiles of EBs and chromospheric microflares are calculated with the non-LTE radiative transfer theory and compared with observations. It is found that the typical features of the two phenomena can be qualitatively reproduced.
KeywordSun: Chromosphere Sun: Photosphere Sun: Magnetic Reconnection Sun: Numerical Simulation
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordHARD X-RAY ; REGION TRANSIENT BRIGHTENINGS ; ELLERMAN BOMBS ; H-ALPHA ; ACTIVE-REGION ; MOUSTACHE PHENOMENON ; SPECTRAL-ANALYSIS ; LINE-PROFILES ; QUIET SUN ; MICROFLARES
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000287644700010
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/4486
Collection太阳高能及相关物理过程研究团组
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China
Recommended Citation
GB/T 7714
Xu, Xiao-Yan,Fang, Cheng,Ding, Ming-De,et al. Numerical simulations of magnetic reconnection in the lower solar atmosphere[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2011,11(2):225-236.
APA Xu, Xiao-Yan,Fang, Cheng,Ding, Ming-De,&Gao, Dan-Hui.(2011).Numerical simulations of magnetic reconnection in the lower solar atmosphere.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,11(2),225-236.
MLA Xu, Xiao-Yan,et al."Numerical simulations of magnetic reconnection in the lower solar atmosphere".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 11.2(2011):225-236.
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