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SOUND-SPEED INVERSION OF THE SUN USING A NONLOCAL STATISTICAL CONVECTION THEORY
Zhang, Chunguang1,2; Deng, Licai1; Xiong, Darun3; Christensen-Dalsgaard, Jorgen4
2012-11-01
Source PublicationASTROPHYSICAL JOURNAL LETTERS
ISSN2041-8205
Volume759Issue:1Pages:L14(5pp)
AbstractHelioseismic 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.
KeywordConvection Sun: Helioseismology Sun: Interior
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/2041-8205/759/1/L14
WOS KeywordTURBULENT CONVECTION ; SOLAR MODELS ; COMPRESSIBLE CONVECTION ; ZONE ; OSCILLATIONS ; HELIOSEISMOLOGY ; CONSTRAINTS ; DIFFUSION ; DEPLETION ; OVERSHOOT
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000310458900014
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/11218
Collection院士文集_熊大闰
Affiliation1.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
GB/T 7714
Zhang, Chunguang,Deng, Licai,Xiong, Darun,et al. SOUND-SPEED INVERSION OF THE SUN USING A NONLOCAL STATISTICAL CONVECTION THEORY[J]. ASTROPHYSICAL JOURNAL LETTERS,2012,759(1):L14(5pp).
APA Zhang, Chunguang,Deng, Licai,Xiong, Darun,&Christensen-Dalsgaard, Jorgen.(2012).SOUND-SPEED INVERSION OF THE SUN USING A NONLOCAL STATISTICAL CONVECTION THEORY.ASTROPHYSICAL JOURNAL LETTERS,759(1),L14(5pp).
MLA Zhang, Chunguang,et al."SOUND-SPEED INVERSION OF THE SUN USING A NONLOCAL STATISTICAL CONVECTION THEORY".ASTROPHYSICAL JOURNAL LETTERS 759.1(2012):L14(5pp).
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