| The horizontal and vertical electric currents in three solar active regions and their relations with flares | |
| Ji, Hai-sheng1,2; Song, Mu-tao1; Zhang, Yan-an1; Song, Shu-min3 | |
| 2003 | |
| Source Publication | CHINESE ASTRONOMY AND ASTROPHYSICS
 |
| ISSN | 0275-1062 |
| Volume | 27Issue:1Pages:79-88 |
| Contribution Rank | 3 |
| Abstract | In this work, systematic calculations are carried out for the distributions of electric currents in three super-active regions (large delta-type spot groups) NOAA 5395, 6659 and 6891. A method of computation published by us is for the first time applied to reveal the distribution of horizontal currents in active regions. The relation between currents and flare kernels may be divided into two kinds, i.e. close correlation and quasi-close correlation. Our statistical results are as follows: (1) For the vertical and horizontal currents, the rates of close correlation are, respectively, 29% and 10%, and those of quasi-correlation are 50% and 30%. (2) Some flare kernels are correlated with both kinds of current, but most flare kernels are correlated with only one kind. (3) There is a small percentage (about 6%) of flare kernels that are not correlated with either kind of current. (4) The two kinds of current supplement each other, and this may be noted in flare forecast. Our analysis also reveals that the places with strong shearing of magnetic field correspond to intense vertical currents and the places with large gradients of magnetic field in the vicinity of magnetic neutral line correspond to intense horizontal currents. |
| Keyword | Sun : Activity Sun : Magnetic Fields Sun : Flares |
| Subtype | Article |
| Subject Area | 太阳和太阳系 |
| WOS Headings | Science & Technology ; Physical Sciences |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | MAGNETIC-FIELDS ; EVOLUTION |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000181305100009 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/190 |
| Collection | 其它 |
| Affiliation | 1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Xinjiang Urumchi Astron Stn, Urumqi 830011, Peoples R China |
| Recommended Citation GB/T 7714 | Ji, Hai-sheng,Song, Mu-tao,Zhang, Yan-an,et al. The horizontal and vertical electric currents in three solar active regions and their relations with flares[J]. CHINESE ASTRONOMY AND ASTROPHYSICS,2003,27(1):79-88. |
| APA | Ji, Hai-sheng,Song, Mu-tao,Zhang, Yan-an,&Song, Shu-min.(2003).The horizontal and vertical electric currents in three solar active regions and their relations with flares.CHINESE ASTRONOMY AND ASTROPHYSICS,27(1),79-88. |
| MLA | Ji, Hai-sheng,et al."The horizontal and vertical electric currents in three solar active regions and their relations with flares".CHINESE ASTRONOMY AND ASTROPHYSICS 27.1(2003):79-88. |
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| The horizontal and v（605KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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