NAOC Open IR  > 光学天文研究部
Non-adiabatic oscillations of the low- and intermediate-degree modes of the Sun
Xiong, D. R.1; Deng, L.2
2010-07-11
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume405Issue:4Pages:2759-2767
AbstractUsing a non-local time-dependent theory of convection, the linear stability is analysed for low- and intermediate-degree (l = 1-25) g4-p39 modes of the Sun. The results show that all the p modes with periods from similar to 3 to similar to 16 min are pulsationally unstable, while all the g, f and p modes with periods longer than similar to 16 min and the high-frequency p modes with periods shorter than similar to 3 min are stable except the low-degree (l = 1-5) p1 modes. The pulsation amplitude growth rates depend on only the frequency and almost do not depend on l. They achieve the maximum at nu similar to 3700 mu Hz (P similar to 270 s). The effects of radiation and convection on the stability are analysed in detail. The coupling between convection and oscillations plays a key role for stabilization of low-frequency f and p modes and excitation of intermediate- and high-frequency p modes. We propose that the solar 5-min oscillations are not excited by a single mechanism, but are resulted from the combined effects of the 'regular' coupling between convection and oscillations and the turbulent stochastic excitation. The coupling between convection and oscillations is the dominant excitation and damping mechanism for the low- and intermediate-frequency modes, and the turbulent stochastic excitation is the main excitation mechanism for high-frequency p modes.
KeywordConvection Sun: Oscillations
DOI10.1111/j.1365-2966.2010.16662.x
Indexed BySCI
Language英语
WOS IDWOS:000279450900050
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/7802
Collection光学天文研究部
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Xiong, D. R.,Deng, L.. Non-adiabatic oscillations of the low- and intermediate-degree modes of the Sun[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2010,405(4):2759-2767.
APA Xiong, D. R.,&Deng, L..(2010).Non-adiabatic oscillations of the low- and intermediate-degree modes of the Sun.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,405(4),2759-2767.
MLA Xiong, D. R.,et al."Non-adiabatic oscillations of the low- and intermediate-degree modes of the Sun".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 405.4(2010):2759-2767.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Xiong, D. R.]'s Articles
[Deng, L.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Xiong, D. R.]'s Articles
[Deng, L.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Xiong, D. R.]'s Articles
[Deng, L.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.