NAOC Open IR
Sunspot penumbral filaments intruding into a light bridge and the resultant reconnection jets
Hou, Y. J.1,2; Li, T.1,2; Zhong, S. H.1,2; Yang, S. H.1,2; Guo, Y. L.1,2; Li, X. H.1,2; Zhang, J.1,3; Xiang, Y. Y.4
2020-10-02
Source PublicationASTRONOMY & ASTROPHYSICS
ISSN0004-6361
Volume642Pages:14
AbstractContext. Penumbral filaments and light bridges are prominent structures inside sunspots and are important for understanding the nature of sunspot magnetic fields and magneto-convection underneath.Aims. We investigate an interesting event where several penumbral filaments intrude into a sunspot light bridge. In doing so we aim to gain further insight into the magnetic fields of the sunspot penumbral filament and light bridge, as well as their interaction.Methods. Combining data from the New Vacuum Solar Telescope, Solar Dynamics Observatory, and Interface Region Imaging Spectrograph, we study the emission, kinematic, and magnetic topology characteristics of the penumbral filaments intruding into the light bridge and the resultant jets.Results. At the west part of the light bridge, the intruding penumbral filaments penetrate into the umbrae on both sides of the light bridge, and two groups of jets are also detected. The jets share the same projected morphology with the intruding filaments and are accompanied by intermittent footpoint brightenings. Simultaneous spectral imaging observations provide convincing evidence for the presences of magnetic-reconnection-related heating and bidirectional flows near the jet bases and contribute to measuring the vector velocities of the jets. Additionally, nonlinear force-free field extrapolation results reveal strong and highly inclined magnetic fields along the intruding penumbral filaments, highly consistent with the results deduced from the vector velocities of the jets. Therefore, we propose that the jets could be caused by magnetic reconnections between emerging fields within the light bridge and the nearly horizontal fields of intruding filaments. The jets are then ejected outward along the stronger filament fields.Conclusions. Our study indicates that magnetic reconnection could occur between the penumbral filament fields and emerging fields within the light bridge and produce jets along the stronger filament fields. These results further complement the study of magnetic reconnection and dynamic activities within the sunspot.
Keywordmagnetic reconnection Sun: activity Sun: atmosphere Sun: magnetic fields sunspots
Funding OrganizationESA ; ESA ; Norwegian Space Centre ; Norwegian Space Centre ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; NAOC Nebula Talents Program ; NAOC Nebula Talents Program ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Young Elite Scientists Sponsorship Program by CAST ; Young Elite Scientists Sponsorship Program by CAST ; Key Programs of the Chinese Academy of Sciences ; Key Programs of the Chinese Academy of Sciences ; ESA ; ESA ; Norwegian Space Centre ; Norwegian Space Centre ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; NAOC Nebula Talents Program ; NAOC Nebula Talents Program ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Young Elite Scientists Sponsorship Program by CAST ; Young Elite Scientists Sponsorship Program by CAST ; Key Programs of the Chinese Academy of Sciences ; Key Programs of the Chinese Academy of Sciences ; ESA ; ESA ; Norwegian Space Centre ; Norwegian Space Centre ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; NAOC Nebula Talents Program ; NAOC Nebula Talents Program ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Young Elite Scientists Sponsorship Program by CAST ; Young Elite Scientists Sponsorship Program by CAST ; Key Programs of the Chinese Academy of Sciences ; Key Programs of the Chinese Academy of Sciences ; ESA ; ESA ; Norwegian Space Centre ; Norwegian Space Centre ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; NAOC Nebula Talents Program ; NAOC Nebula Talents Program ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Young Elite Scientists Sponsorship Program by CAST ; Young Elite Scientists Sponsorship Program by CAST ; Key Programs of the Chinese Academy of Sciences ; Key Programs of the Chinese Academy of Sciences
DOI10.1051/0004-6361/202038668
WOS KeywordSOLAR MAGNETIC FEATURES ; DARK-CORED FILAMENTS ; FINE-STRUCTURE ; HIGH-RESOLUTION ; UMBRAL DOTS ; FIELDS ; MAGNETOCONVECTION ; RECONSTRUCTION ; FLUX
Language英语
Funding ProjectESA ; Norwegian Space Centre ; National Key R&D Program of China[2019YFA0405000] ; National Natural Science Foundation of China[11533008] ; National Natural Science Foundation of China[11903050] ; National Natural Science Foundation of China[11773039] ; National Natural Science Foundation of China[11790304] ; National Natural Science Foundation of China[11873059] ; National Natural Science Foundation of China[11673035] ; National Natural Science Foundation of China[11673034] ; National Natural Science Foundation of China[11790300] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB41000000] ; NAOC Nebula Talents Program ; Youth Innovation Promotion Association of CAS ; Young Elite Scientists Sponsorship Program by CAST[2018QNRC001] ; Key Programs of the Chinese Academy of Sciences[QYZDJ-SSW-SLH050]
Funding OrganizationESA ; ESA ; Norwegian Space Centre ; Norwegian Space Centre ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; NAOC Nebula Talents Program ; NAOC Nebula Talents Program ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Young Elite Scientists Sponsorship Program by CAST ; Young Elite Scientists Sponsorship Program by CAST ; Key Programs of the Chinese Academy of Sciences ; Key Programs of the Chinese Academy of Sciences ; ESA ; ESA ; Norwegian Space Centre ; Norwegian Space Centre ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; NAOC Nebula Talents Program ; NAOC Nebula Talents Program ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Young Elite Scientists Sponsorship Program by CAST ; Young Elite Scientists Sponsorship Program by CAST ; Key Programs of the Chinese Academy of Sciences ; Key Programs of the Chinese Academy of Sciences ; ESA ; ESA ; Norwegian Space Centre ; Norwegian Space Centre ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; NAOC Nebula Talents Program ; NAOC Nebula Talents Program ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Young Elite Scientists Sponsorship Program by CAST ; Young Elite Scientists Sponsorship Program by CAST ; Key Programs of the Chinese Academy of Sciences ; Key Programs of the Chinese Academy of Sciences ; ESA ; ESA ; Norwegian Space Centre ; Norwegian Space Centre ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; NAOC Nebula Talents Program ; NAOC Nebula Talents Program ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Young Elite Scientists Sponsorship Program by CAST ; Young Elite Scientists Sponsorship Program by CAST ; Key Programs of the Chinese Academy of Sciences ; Key Programs of the Chinese Academy of Sciences
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000577102500006
PublisherEDP SCIENCES S A
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/82046
Collection中国科学院国家天文台
Corresponding AuthorHou, Y. J.
Affiliation1.Chinese Acad Sci, CAS Key Lab Solar Act, Natl Astron Observ, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
3.Anhui Univ, Sch Phys & Mat Sci, Hefei 230601, Peoples R China
4.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
Hou, Y. J.,Li, T.,Zhong, S. H.,et al. Sunspot penumbral filaments intruding into a light bridge and the resultant reconnection jets[J]. ASTRONOMY & ASTROPHYSICS,2020,642:14.
APA Hou, Y. J..,Li, T..,Zhong, S. H..,Yang, S. H..,Guo, Y. L..,...&Xiang, Y. Y..(2020).Sunspot penumbral filaments intruding into a light bridge and the resultant reconnection jets.ASTRONOMY & ASTROPHYSICS,642,14.
MLA Hou, Y. J.,et al."Sunspot penumbral filaments intruding into a light bridge and the resultant reconnection jets".ASTRONOMY & ASTROPHYSICS 642(2020):14.
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