Seismic study of solar convection and overshooting: results of nonlocal convection
Seismic study of solar convection and overshooting: results of nonlocal convection
复制标题
太阳对流和超调的地震研究:非局域对流的结果
DOI:
10.1088/1674-4527/13/9/011
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发表时间:
2013-05
影响因子:
1.8
通讯作者:
Christensen-Dalsgaard, Jorgen
中科院分区:
文献类型:
--
作者:
Zhang, Chun-Guang;Deng, Li-Cai;Xiong, Da-Run;Christensen-Dalsgaard, Jorgen
Local mixing-length theory is incapable of describing nonlocal phenomena in stellar convection, such as overshooting. Therefore standard solar models constructed with local mixing-length theory significantly deviate from the Sun at the boundariesof the convection zone, where convection becomes less efficient and nonlocal effects are important. The differences between observed and computed frequencies mainly come from the region near the surface, while the localized difference in sound speed is just below the convective envelope. We compute a solar envelope model using Xiong's nonlocal convection theory, and carry out helioseismic analysis. The nonlocal model has a smooth transition at the base of the convection zone, as revealed by helioseismology. It reproduces solar frequencies more accurately, and reduces the localized difference in sound speed between the Sun and standard solar models.
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DOI:
10.1111/j.1365-2966.2008.12969.x
发表时间:
2007-07
影响因子:
4.8
作者:
L. Deng;D. Xiong
通讯作者:
L. Deng;D. Xiong
DOI:
10.1111/j.1365-2966.2007.11642.x
发表时间:
2006-11
影响因子:
4.8
作者:
通讯作者:
--
影响因子:
6.5
作者:
Xiong
通讯作者:
Xiong
影响因子:
1.9
作者:
V. Baturin;I. V. Mironova
通讯作者:
V. Baturin;I. V. Mironova
影响因子:
4.8
作者:
S. Grossman
通讯作者:
S. Grossman