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Global Non-Potential Magnetic Models of the Solar Corona During the March 2015 Eclipse
Yeates, Anthony R.; Amari, Tahar; Contopoulos, Ioannis; Feng, Xueshang; Mackay, Duncan H.; Mikic, Zoran; Wiegelmann, Thomas; Hutton, Joseph; Lowder, Christopher A.; Morgan, Huw; Petrie, Gordon; Rachmeler, Laurel A.; Upton, Lisa A.; Canou, Aurelien; Chopin, Pierre; Downs, Cooper; Druckmueller, Miloslav; Linker, Jon A.; Seaton, Daniel B.; Torok, Tibor; Yeates, AR (reprint author), Univ Durham, Dept Math Sci, Sci Labs, South Rd, Durham DH1 3LE, England.
Department空间科学部
Source PublicationSPACE SCIENCE REVIEWS
2018
Volume214Issue:5Pages:UNSP 99
ISSN0038-6308
Language英语
KeywordMagnetic Fields Sun: Surface Magnetism Sun: Corona
AbstractSeven 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.
Indexed BySCI ; EI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/6395
Collection空间科学部
Corresponding AuthorYeates, AR (reprint author), Univ Durham, Dept Math Sci, Sci Labs, South Rd, Durham DH1 3LE, England.
Recommended Citation
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.
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20182145UNSP99.pdf(8704KB)期刊论文作者接受稿开放获取CC BY-NC-SAApplication Full Text
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