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LOCAL TWIST AND CURRENT HELICITY DISTRIBUTIONS OF ACTIVE REGION NOAA 10930
Su, JT1,2; Sakurai, T1; Suematsu, Y1; Hagino, M1; Liu Y(刘煜)3; Su, JT (reprint author), Natl Astron Observ, Tokyo 1818588, Japan.
发表期刊ASTROPHYSICAL JOURNAL LETTERS
2009-06-01
卷号697期号:2页码:L103-L107
DOI10.1088/0004-637X/697/2/L103
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收录类别SCI
关键词Sun: Activity Sun: Filaments Sun: Magnetic Fields
摘要Hinode high-quality vector magnetograms and G-band data are utilized to study the distributions of local twist alpha(z) and current helicity h(c) on the active region of NOAA 10930. The new findings are as follows. (1) The patches of positive and negative helicities were intermixed showing a mesh pattern in the umbra and a thread pattern in the penumbra. (2) For its main stable sunspot (MSS), there was a positive-helicity patch accounting for similar to 43% of the umbra area surrounding the inner umbra, which had a predominantly negative helicity. For its minor rotating sunspot (MRS), there was a negative-helicity patch appearing in the umbra. (3) The fine distributions of alpha(z) and h(c) on a penumbral filament indicated that it may be possible for the two opposite helicities to coexist in a filament and their magnitudes were nearly equivalent.
项目资助者NSFC [10878016, 10778723] ; National Basic Research Program of China [2006CB806301]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN2041-8205
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WOS记录号WOS:000266073800007
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]SOLAR OPTICAL TELESCOPE ; MAGNETIC-FLUX ; 180-DEGREES AMBIGUITY ; VECTOR MAGNETOGRAMS ; PENUMBRAL FILAMENTS ; CYCLE VARIATION ; HINODE ; FIELDS ; POLARIZATION ; SUNSPOTS
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/7171
专题选址与日冕观测组
通讯作者Su, JT (reprint author), Natl Astron Observ, Tokyo 1818588, Japan.
作者单位1.National Astronomical Observatory, Mitaka, Tokyo 181-8588, Japan
2.National Astronomical Observatories, CAS, Beijing 100012, China
3.Yunnan Astronomical Observatory, National Astronomical Observatories, Kunming 650011, China
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Su, JT,Sakurai, T,Suematsu, Y,et al. LOCAL TWIST AND CURRENT HELICITY DISTRIBUTIONS OF ACTIVE REGION NOAA 10930[J]. ASTROPHYSICAL JOURNAL LETTERS,2009,697(2):L103-L107.
APA Su, JT,Sakurai, T,Suematsu, Y,Hagino, M,Liu Y,&Su, JT .(2009).LOCAL TWIST AND CURRENT HELICITY DISTRIBUTIONS OF ACTIVE REGION NOAA 10930.ASTROPHYSICAL JOURNAL LETTERS,697(2),L103-L107.
MLA Su, JT,et al."LOCAL TWIST AND CURRENT HELICITY DISTRIBUTIONS OF ACTIVE REGION NOAA 10930".ASTROPHYSICAL JOURNAL LETTERS 697.2(2009):L103-L107.
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