TIME-DISTANCE HELIOSEISMOLOGY IN THE VICINITY OF SUNSPOTS

被引：28
|
作者：
DSILVA, S [1 ]
DUVALL, TL [1 ]
机构：
[1] NASA, GODDARD SPACE FLIGHT CTR, GSFC, ASTRON & SOLAR PHYS LAB, GREENBELT, MD 20771 USA
来源：
ASTROPHYSICAL JOURNAL | 1995年 / 438卷 / 01期
关键词：
MHD; SUN; OSCILLATIONS; SUNSPOTS;
D O I：
10.1086/175089
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We use the ray description of acoustic-gravity modes to calculate time-distance diagrams for the quiet Sun and for regions in the vicinity of a sunspot with a monolithic flux-tube structure. Time-distance curves for the quiet Sun match the observations of Duvall et al. In the vicinity of a sunspot these quiet Sun curves split into a family of closely spaced curves. The structure of this bandlike feature is found to be sensitive to the sunspot model, and can be a diagnostic of the subsurface geometry of the sunspot flux tube.
引用
收藏
页码：454 / 462
页数：9
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