PMO OpenIR  > 太阳活动的多波段观测研究团组
Dependence of the length of solar filament threads on the magnetic configuration
Zhou, Yu-Hao1,2; Chen, Peng-Fei1,2; Zhang, Qing-Min3; Fang, Cheng1,2
2014-05-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume14Issue:5Pages:581-588
AbstractHigh-resolution H alpha observations indicate that filaments consist of an assembly of thin threads. In quiescent filaments, the threads are generally short, whereas in active region filaments, the threads are generally long. In order to explain these observational features, we performed one-dimensional radiative hydrodynamic simulations of filament formation along a dipped magnetic flux tube in the framework of the chromospheric evaporation-coronal condensation model. The geometry of a dipped magnetic flux tube is characterized by three parameters, i.e., the depth (D), the half-width (w) and the altitude (h) of the magnetic dip. A survey of the parameters in numerical simulations shows that when allowing the filament thread to grow in 5 days, the maximum length (L-th) of the filament thread increases linearly with w, and decreases linearly with D and h. The dependence is fitted into a linear function L-th = 0.84w - 0.88D - 2.78h + 17.31 (Mm). Such a relation can qualitatively explain why quiescent filaments have shorter threads and active region filaments have longer threads.
KeywordSun: Filaments, Prominences Methods: Numerical Hydrodynamics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/1674-4527/14/5/007
WOS KeywordCORONAL MASS EJECTIONS ; PROMINENCE OSCILLATION ; FINE-STRUCTURES ; ERUPTION ; MODELS ; SIMULATIONS ; AMPLITUDE ; DYNAMICS
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Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000335513000007
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/10657
Collection太阳活动的多波段观测研究团组
Affiliation1.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China
2.Nanjing Univ, Key Lab Modern Astron & Astrophys, Nanjing 210093, Jiangsu, Peoples R China
3.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Zhou, Yu-Hao,Chen, Peng-Fei,Zhang, Qing-Min,et al. Dependence of the length of solar filament threads on the magnetic configuration[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2014,14(5):581-588.
APA Zhou, Yu-Hao,Chen, Peng-Fei,Zhang, Qing-Min,&Fang, Cheng.(2014).Dependence of the length of solar filament threads on the magnetic configuration.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,14(5),581-588.
MLA Zhou, Yu-Hao,et al."Dependence of the length of solar filament threads on the magnetic configuration".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 14.5(2014):581-588.
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