Photospheric Magnetic Free Energy Density of Solar Active Regions
文献类型：期刊论文
| 作者 | Zhang, Hongqi
|
| 刊名 | SOLAR PHYSICS
 |
| 出版日期 | 2016-12-01 |
| 卷号 | 291期号:12页码:3501-3517 |
| 关键词 | Sun: activity Sun: magnetic topology Sun: photosphere Sun: flare-CMEs |
| 英文摘要 | We present the photospheric energy density of magnetic fields in two solar active regions (one of them recurrent) inferred from observational vector magnetograms, and compare it with other available differently defined energy parameters of magnetic fields in the photosphere. We analyze the magnetic fields in Active Regions NOAA 6580-6619-6659 and 11158. The quantity 1/4 pi B-n center dot B-p is an important energy parameter that reflects the contribution of magnetic shear to the difference between the potential (B-p) and the non-potential magnetic field (B-n), and also the contribution to the free magnetic energy near the magnetic neutral lines in the active regions. It is found that the photospheric mean magnetic energy density shows clear changes before the powerful solar flares in Active Region NOAA 11158, which is consistent with the change in magnetic fields in the flaring lower atmosphere. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | 2011 FEBRUARY 15 ; FORCE-FREE FIELD ; LINE-OF-SIGHT ; BOUNDARY-ELEMENT METHOD ; WHITE-LIGHT FLARES ; NOAA AR 11158 ; X2.2 FLARE ; JUNE 1991 ; ELECTRIC-CURRENTS ; CORONAL LOOPS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000389417400004 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6836]  |
| 专题 | 国家天文台_太阳物理研究部 |
| 作者单位 | Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Hongqi. Photospheric Magnetic Free Energy Density of Solar Active Regions[J]. SOLAR PHYSICS,2016,291(12):3501-3517. |
| APA | Zhang, Hongqi.(2016).Photospheric Magnetic Free Energy Density of Solar Active Regions.SOLAR PHYSICS,291(12),3501-3517. |
| MLA | Zhang, Hongqi."Photospheric Magnetic Free Energy Density of Solar Active Regions".SOLAR PHYSICS 291.12(2016):3501-3517. |
入库方式： OAI收割
来源：国家天文台
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