摘要
本文研究了表面边界位置对太阳ρ模绝热本征振荡频率的影响。数值计算结果表明，对于ｖ４０００μＨｚ的中低阶ｐ模，表面边界置于温度极小点所引起的本征振荡频率的计算误差随着ｖ和ｌ的增大，表面边界点位置对太阳理论振荡频率的影响增大，色球结构对太阳ｐ模振荡频率的影响已变得不可忽略。
The influence of the altitude of the surface boundary on the eigenfrequency of the solar p modes is investigated. The uncertainty of the eigenfrequency is less than about 0.5 μHz for the low and the intermediate degree p modes with frequency v<4 mHz, while the surface boundary is located at the minimum of the temperature.The influence of the surface boundary on the eigenfrequency will increase with the increasing of the frequency and the degree of the modes. The influence of the chromosphere on the eigenfrequency of the high frequency(v>4 mHz) and high degree (l>300) P modes will not be neglected. The uncertainty of the eigenfrequency due to the chromosphere increases from 0.3-1.2μHz to 2-10μHz for the solar P modes (l= 40 - 700) with the increasing of their frequency from 4 mHz to 5 mHz.
出处
《天文学报》
CSCD
北大核心
1994年第4期439-442,共4页
Acta Astronomica Sinica
基金
国家自然科学基金
