The Bipolar Magnetic Emergence in the Solar Polar Region
文献类型：期刊论文
| 作者 | Jin,Chunlan1; Zhou,Guiping1; Zhang,Yuzong1; Wang,Jingxiu1,2 |
| 刊名 | The Astrophysical Journal Letters
 |
| 出版日期 | 2020-01-20 |
| 卷号 | 889期号:1 |
| ISSN号 | 2041-8205 |
| 关键词 | Solar magnetic fields Sunspots Solar activity Solar photosphere Solar dynamo |
| DOI | 10.3847/2041-8213/ab65bf |
| 英文摘要 | Abstract Due to projection effect and polarization sensitivity, it is still unknown whether the bipolar magnetic emergence (BME) exists in the solar polar region. In this study, combining the magnetic observations from the Helioseismic and Magnetic Imager and imaging observations of the 211 ? waveband from the Atmospheric Imaging Assembly, we try to identify and diagnose the BME. Considering the magnetic evolution and the corresponding intensity variation in the extreme ultraviolet waveband, we find definite events of the BMEs in the solar polar region. In total, we identify more than 300 BMEs in the solar polar region in the whole year from 2010 June to 2011 May. We find that whether on the southern or northern polar region, the leading polarity of the BMEs is almost half-positive and half-negative, and the BMEs’ magnetic axes show random distribution in that direction. These results imply the possible existence of local dynamo in the solar polar region. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:2041-8205-889-1-AB65BF |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/28533]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Science, Beijing 100101, People’s Republic of China cljin@nao.cas.cn 2.School of Astronomy and Space Science, University of Chinese Academy of Sciences, 100049, Beijing, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Jin,Chunlan,Zhou,Guiping,Zhang,Yuzong,et al. The Bipolar Magnetic Emergence in the Solar Polar Region[J]. The Astrophysical Journal Letters,2020,889(1). |
| APA | Jin,Chunlan,Zhou,Guiping,Zhang,Yuzong,&Wang,Jingxiu.(2020).The Bipolar Magnetic Emergence in the Solar Polar Region.The Astrophysical Journal Letters,889(1). |
| MLA | Jin,Chunlan,et al."The Bipolar Magnetic Emergence in the Solar Polar Region".The Astrophysical Journal Letters 889.1(2020). |
入库方式： OAI收割
来源：国家天文台
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