KMS National Astronomical Observatories, CAS
| A Non-axisymmetric Spherical α2-Dynamo | |
Jie Jiang ; Jingxiu Wang
| |
| 2006 | |
| Source Publication | 中国天文和天体物理学报：英文版
 |
| ISSN | 1009-9271 |
| Volume | 6.0Issue:002Pages:227 |
| Abstract | Using the Chebyshev-tau method, the generation of oscillatory nonaxisymmetric stellar magnetic fields by the α^2-dynamo is studied in spherical geometry. Following the boundary conditions given by Schubert ＆ Zhang, the spherical α^2-dynamo consists of a fully convective spherical shell with inner radius ri and outer radius ro. A comparison of the critical dynamo numbers of axisymmetric and φ-dependent modes for different thicknesses of the convective shell and different α- profiles leads to the following qualitative results： （i） when the angular factor of α- profile is sin^n θ cosθ （n= 1, 2, 4） the solutions of the α^2dynamo are oscillatory and non-axisymmetric, （ii） the thinner the convective shell, the more easily is the nonaxisymmetric mode excited and the higher is the latitudinal wave number, （iii） the thickness of the outer convective shell has an effect on the symmetries of the magnetic fields. |
| Keyword | 非对称球形 磁性 数值模拟 星系 |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.bao.ac.cn/handle/114a11/59132 |
| Collection | 中国科学院国家天文台 |
| Affiliation | 中国科学院国家天文台 |
| First Author Affilication | National Astronomical Observatories, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Jie Jiang,Jingxiu Wang. A Non-axisymmetric Spherical α2-Dynamo[J]. 中国天文和天体物理学报：英文版,2006,6.0(002):227. |
| APA | Jie Jiang,&Jingxiu Wang.(2006).A Non-axisymmetric Spherical α2-Dynamo.中国天文和天体物理学报：英文版,6.0(002),227. |
| MLA | Jie Jiang,et al."A Non-axisymmetric Spherical α2-Dynamo".中国天文和天体物理学报：英文版 6.0.002(2006):227. |
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