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OBSERVATIONAL EVIDENCE OF UNWINDING AND CHIRALITY CHANGING IN PENUMBRAL FILAMENTS BY HINODE
Su, JT1,2; Liu Y(刘煜)3; Zhang, HQ1,2; Mao, XJ4; Zhang, Y1,2; He, H1,2; Su, JT (reprint author), Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China.
发表期刊ASTROPHYSICAL JOURNAL
2010-02-10
卷号710期号:1页码:170-179
DOI10.1088/0004-637X/710/1/170
产权排序第3完成单位
收录类别SCI
关键词Sun: Activity Sun: Magnetic Topology Sun: Filaments Prominences
摘要In this paper, we present a very important and quite controversial observational property of penumbral filaments that may exhibit twisting motions and change their chirality. Using high-resolution observations from the Solar Optical Telescope on board Hinode, we study the unwinding and twisting motions in the penumbral filaments of active region NOAA 10930. Penumbral filaments, including those to the northwest of the magnetic polarity inversion line (PIL) and those inside the PIL region, are found to make unwinding motions associated with the decrease of their right-handed twists. After unwinding, the filaments inside the PIL region are found to twist continuously to develop left-handed twists in them. Moreover, we find the filament elongating, expanding, splitting, and the screw pitch decreasing in the unwinding process and, getting shorter, shrinking, merging, and the screw pitch increasing in the twisting process. These observational results indicate that penumbral filaments are more inclined to be twisted magnetic flux tubes in nature.
项目资助者AJFC [10778723, 10878016] ; NSFC [10473016, 10273002, 10843010, 10673016, 60673158, 10933003, 10803012, 10803011] ; National Basic Research Program of China [2006CB806301] ; Young Researcher Grant of National Astronomical Observatories ; Chinese Academy of Sciences ; ISAS/JAXA ; NASA ; STFC (UK) ; ESA ; NSC (Norway)
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000273850800017
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]SOLAR OPTICAL TELESCOPE ; MAGNETIC-FIELDS ; SUNSPOT PENUMBRAE ; CURRENT HELICITY ; FINE-STRUCTURE ; VECTOR MAGNETOGRAMS ; TWISTING MOTIONS ; ACTIVE REGIONS ; FLUX TUBES ; CYCLE 22
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/7175
专题选址与日冕观测组
通讯作者Su, JT (reprint author), Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China.
作者单位1.National Astronomical Observatories, CAS, Beijing 100012, China
2.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
3.Yunnan Astronomical Observatory, National Astronomical Observatories, CAS, Kunming 650011, China
4.Department of Astronomy, Beijing Normal University, Beijing 100875, China
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Su, JT,Liu Y,Zhang, HQ,et al. OBSERVATIONAL EVIDENCE OF UNWINDING AND CHIRALITY CHANGING IN PENUMBRAL FILAMENTS BY HINODE[J]. ASTROPHYSICAL JOURNAL,2010,710(1):170-179.
APA Su, JT.,Liu Y.,Zhang, HQ.,Mao, XJ.,Zhang, Y.,...&Su, JT .(2010).OBSERVATIONAL EVIDENCE OF UNWINDING AND CHIRALITY CHANGING IN PENUMBRAL FILAMENTS BY HINODE.ASTROPHYSICAL JOURNAL,710(1),170-179.
MLA Su, JT,et al."OBSERVATIONAL EVIDENCE OF UNWINDING AND CHIRALITY CHANGING IN PENUMBRAL FILAMENTS BY HINODE".ASTROPHYSICAL JOURNAL 710.1(2010):170-179.
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