Global Non-Potential Magnetic Models of the Solar Corona During the March 2015 Eclipse
文献类型：期刊论文
| 作者 | Yeates, Anthony R.; Amari, Tahar; Contopoulos, Ioannis; Feng, Xueshang; Mackay, Duncan H.; Mikic, Zoran; Wiegelmann, Thomas; Hutton, Joseph; Lowder, Christopher A.; Morgan, Huw |
| 刊名 | SPACE SCIENCE REVIEWS
 |
| 出版日期 | 2018 |
| 卷号 | 214期号:5页码:UNSP 99 |
| 关键词 | Magnetic Fields Sun: Surface Magnetism Sun: Corona |
| ISSN号 | 0038-6308 |
| 英文摘要 | Seven different models are applied to the same problem of simulating the Sun's coronal magnetic field during the solar eclipse on 2015 March 20. All of the models are non-potential, allowing for free magnetic energy, but the associated electric currents are developed in significantly different ways. This is not a direct comparison of the coronal modelling techniques, in that the different models also use different photospheric boundary conditions, reflecting the range of approaches currently used in the community. Despite the significant differences, the results show broad agreement in the overall magnetic topology. Among those models with significant volume currents in much of the corona, there is general agreement that the ratio of total to potential magnetic energy should be approximately 1.4. However, there are significant differences in the electric current distributions; while static extrapolations are best able to reproduce active regions, they are unable to recover sheared magnetic fields in filament channels using currently available vector magnetogram data. By contrast, time-evolving simulations can recover the filament channel fields at the expense of not matching the observed vector magnetic fields within active regions. We suggest that, at present, the best approach may be a hybrid model using static extrapolations but with additional energization informed by simplified evolution models. This is demonstrated by one of the models. |
| 语种 | 英语 |
| 资助机构 | HPC resources of CINES/IDRIS [2016-16050438] ; UK STFC ; US Air Force Office for Scientific Research ; Leverhulme Trust ; NASA [NNX15AN43G, NNX15AB65G] ; National Natural Science Foundation of China [41531073] ; DFG [WI 3211/5-1] ; NASA ; NSF ; AFOSR ; National Science Foundation Atmospheric and Geospace Sciences Postdoctoral Research Fellowship Program ; National Science Foundation ; Leverhulme Foundation ; STFC PRD grant |
| 源URL | [http://ir.nssc.ac.cn/handle/122/6395]  |
| 专题 | 国家空间科学中心_空间科学部 |
| 通讯作者 | Yeates, AR (reprint author), Univ Durham, Dept Math Sci, Sci Labs, South Rd, Durham DH1 3LE, England. |
| 推荐引用方式 GB/T 7714 | Yeates, Anthony R.,Amari, Tahar,Contopoulos, Ioannis,et al. Global Non-Potential Magnetic Models of the Solar Corona During the March 2015 Eclipse[J]. SPACE SCIENCE REVIEWS,2018,214(5):UNSP 99. |
| APA | Yeates, Anthony R..,Amari, Tahar.,Contopoulos, Ioannis.,Feng, Xueshang.,Mackay, Duncan H..,...&Yeates, AR .(2018).Global Non-Potential Magnetic Models of the Solar Corona During the March 2015 Eclipse.SPACE SCIENCE REVIEWS,214(5),UNSP 99. |
| MLA | Yeates, Anthony R.,et al."Global Non-Potential Magnetic Models of the Solar Corona During the March 2015 Eclipse".SPACE SCIENCE REVIEWS 214.5(2018):UNSP 99. |
入库方式： OAI收割
来源：国家空间科学中心
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