Magnetic and current helicities in solar dynamos
文献类型：期刊论文
| 作者 | Sokoloff, Dmitry1,2; Zhang, Hongqi1 ; Kuzanyan, Kirill M.3,4; Tomin, Dmitry5
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| 刊名 | ADVANCES IN SPACE RESEARCH
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| 出版日期 | 2007 |
| 卷号 | 39期号:11页码:1670-1673 |
| 关键词 | Sun : magnetic fields |
| 英文摘要 | Current helicity data for solar active region provide the unique observational information for so-called a-effect which plays a key role in astrophysical dynamos producing large-scale magnetic fields of celestial bodies. We discuss problems arising in comparison between helicity data and predictions of solar dynamo theory. In particular, a significant excess of active regions with the "wrong" sign of helicity is seen to occur just at the beginning of the 11-year solar cycle. We attribute the excess partially to additional current helicity production from the twisting of rising magnetic flux tubes. We demonstrate that the excess is much less pronounced in the twist data. Future perspectives of helicity observations are discussed. (c) 2006 COSPAR. Published by Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000253588800002 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/7233]  |
| 专题 | 国家天文台_太阳物理研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Moscow MV Lomonosov State Univ, Dept Phys, Moscow 119992, Russia 3.IZMIRAN, Moscow 142190, Russia 4.Univ Leeds, Sch Math, Leeds LS2 9JT, W Yorkshire, England 5.Moscow MV Lomonosov State Univ, Dept Mech & Math, Moscow 119992, Russia |
| 推荐引用方式 GB/T 7714 | Sokoloff, Dmitry,Zhang, Hongqi,Kuzanyan, Kirill M.,et al. Magnetic and current helicities in solar dynamos[J]. ADVANCES IN SPACE RESEARCH,2007,39(11):1670-1673. |
| APA | Sokoloff, Dmitry,Zhang, Hongqi,Kuzanyan, Kirill M.,&Tomin, Dmitry.(2007).Magnetic and current helicities in solar dynamos.ADVANCES IN SPACE RESEARCH,39(11),1670-1673. |
| MLA | Sokoloff, Dmitry,et al."Magnetic and current helicities in solar dynamos".ADVANCES IN SPACE RESEARCH 39.11(2007):1670-1673. |
入库方式： OAI收割
来源：国家天文台
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