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题名: SOUND-SPEED INVERSION OF THE SUN USING A NONLOCAL STATISTICAL CONVECTION THEORY
作者: Zhang, Chunguang1, 2; Deng, Licai1; Xiong DaRun(熊大闰)3; Christensen-Dalsgaard, Jorgen4
刊名: ASTROPHYSICAL JOURNAL LETTERS
出版日期: 2012-11-01
卷号: 759, 期号:1, 页码:L14(5pp)
关键词: convection ; Sun: helioseismology ; Sun: interior
学科分类: Astronomy & Astrophysics
DOI: 10.1088/2041-8205/759/1/L14
文章类型: Article
英文摘要: Helioseismic inversions reveal a major discrepancy in sound speed between the Sun and the standard solar model just below the base of the solar convection zone. We demonstrate that this discrepancy is caused by the inherent shortcomings of the local mixing-length theory adopted in the standard solar model. Using a self-consistent nonlocal convection theory, we construct an envelope model of the Sun for sound-speed inversion. Our solar model has a very smooth transition from the convective envelope to the radiative interior, and the convective energy flux changes sign crossing the boundaries of the convection zone. It shows evident improvement over the standard solar model, with a significant reduction in the discrepancy in sound speed between the Sun and local convection models.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: TURBULENT CONVECTION ; SOLAR MODELS ; COMPRESSIBLE CONVECTION ; ZONE ; OSCILLATIONS ; HELIOSEISMOLOGY ; CONSTRAINTS ; DIFFUSION ; DEPLETION ; OVERSHOOT
收录类别: SCI
语种: 英语
WOS记录号: WOS:000310458900014
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/11218
Appears in Collections:熊大闰_期刊论文

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作者单位: 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
4.Aarhus Univ, Dept Phys & Astron, Stellar Astrophys Ctr, DK-8000 Aarhus C, Denmark

Recommended Citation:
Zhang, Chunguang; Deng, Licai; Xiong, Darun; Christensen-Dalsgaard, Jorgen.SOUND-SPEED INVERSION OF THE SUN USING A NONLOCAL STATISTICAL CONVECTION THEORY,ASTROPHYSICAL JOURNAL LETTERS,2012,759(1):L14(5pp)
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文件名: 2012143SOUND-SPEED INVERSION OF THE SUN USING A NONLOCAL STATISTICAL CONVECTION THEORY.pdf
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