| Angular momentum transport and element mixing in the stellar interior - I. Application to the rotating Sun |
| Yang WM(杨伍明)1,2 ; Bi SL(毕少兰)1
|
发表期刊 | ASTRONOMY & ASTROPHYSICS
(IF:5.565[JCR-2017],4.902[5-Year]) |
| 2006-04
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卷号 | 449期号:3页码:1161-1168 |
DOI | 10.1051/0004-6361:20053577
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产权排序 | 第1完成单位
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收录类别 | SCI
; EI
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关键词 | Sun : Rotation
Sun : Magnetic Fields
Diffusion
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摘要 | Aims. The purpose of this work was to obtain diffusion coefficient for the magnetic angular momentum transport and material transport in a rotating solar model. Methods. We assumed that the transport of both angular momentum and chemical elements caused by magnetic fields could be treated as a diffusion process. Results. The diffusion coefficient depends on the stellar radius, angular velocity, and the configuration of magnetic fields. By using of this coefficient, it is found that our model becomes more consistent with the helioseismic results of total angular momentum, angular momentum density, and the rotation rate in a radiative region than the one without magnetic fields. Not only can the magnetic fields redistribute angular momentum efficiently, but they can also strengthen the coupling between the radiative and convective zones. As a result, the sharp gradient of the rotation rate is reduced at the bottom of the convective zone. The thickness of the layer of sharp radial change in the rotation rate is about 0.036 R-circle dot in our model. Furthermore, the difference of the sound-speed square between the seismic Sun and the model is improved by mixing the material that is associated with angular momentum transport. |
语种 | 英语
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学科领域 | 天文学
; 恒星与银河系
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文章类型 | Article
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出版者 | EDP SCIENCES S A
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出版地 | 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
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ISSN | 0004-6361
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URL | 查看原文
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归档日期 | 2006-04-05
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WOS记录号 | WOS:000236248800028
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WOS研究方向 | Astronomy & Astrophysics
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WOS类目 | Astronomy & Astrophysics
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关键词[WOS] | Solar Convection Zone
; Magnetic-fields
; Differential Rotation
; Radiative Zones
; Helioseismic Constraints
; Meridional Circulation
; Internal-rotation
; Flux Tubes
; Stars
; Evolution
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EI入藏号 | 2006169829001
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EI主题词 | Astronomy
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EI分类号 | 656.2space Research - 657.2extraterrestrial Physics And Stellar Phenomena - 701.2magnetism: Basic Concepts And Phenomena - 804chemical Products Generally - 931.1mechanics
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引用统计 |
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文献类型 | 期刊论文
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条目标识符 | http://ir.ynao.ac.cn/handle/114a53/5180
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专题 | 恒星物理研究组
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通讯作者 | Yang WM(杨伍明) |
作者单位 | 1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, PR China 2.Graduate School of The Chinese Academy of Sciences, Beijing 100039, PR China
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第一作者单位 | 中国科学院云南天文台
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通讯作者单位 | 中国科学院云南天文台
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推荐引用方式 GB/T 7714 |
Yang WM,Bi SL. Angular momentum transport and element mixing in the stellar interior - I. Application to the rotating Sun[J]. ASTRONOMY & ASTROPHYSICS,2006,449(3):1161-1168.
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APA |
Yang WM,&Bi SL.(2006).Angular momentum transport and element mixing in the stellar interior - I. Application to the rotating Sun.ASTRONOMY & ASTROPHYSICS,449(3),1161-1168.
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MLA |
Yang WM,et al."Angular momentum transport and element mixing in the stellar interior - I. Application to the rotating Sun".ASTRONOMY & ASTROPHYSICS 449.3(2006):1161-1168.
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