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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.
Source PublicationASTROPHYSICAL JOURNAL LETTERS
2009-06-01
Volume697Issue:2Pages:L103-L107
DOI10.1088/0004-637X/697/2/L103
Contribution Rank第1完成单位
Indexed BySCI
KeywordSun: Activity Sun: Filaments Sun: Magnetic Fields
AbstractHinode 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.
Funding OrganizationNSFC [10878016, 10778723] ; National Basic Research Program of China [2006CB806301]
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN2041-8205
URL查看原文
WOS IDWOS:000266073800007
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSOLAR OPTICAL TELESCOPE ; MAGNETIC-FLUX ; 180-DEGREES AMBIGUITY ; VECTOR MAGNETOGRAMS ; PENUMBRAL FILAMENTS ; CYCLE VARIATION ; HINODE ; FIELDS ; POLARIZATION ; SUNSPOTS
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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/7171
Collection选址与日冕观测组
Corresponding AuthorSu, JT (reprint author), Natl Astron Observ, Tokyo 1818588, Japan.
Affiliation1.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
Recommended Citation
GB/T 7714
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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