太阳P模振动理论的研究

日震学是太阳物理的一个前沿分支学科，是根据太阳振动的观测来研究太阳的内部结构与运动的一种方法学。太阳５ｍｉｎ振动频率的理论计算和实测之间存在的显著偏差和振动模的激发问题一直是困扰日震学的两大难题，经过多年的研究仍然没有解决。然而太阳的表面层内绝热假设条件与真实情况有很大的偏差，我们认为绝大多数标准太阳模型的Ｐ模频率计算忽略了非绝热效应对频率的影响，忽略了振动的激发和衰减机制以及缺乏振动与对流湍流相互作用的知识。因此，我们必须发展非绝热理论来处理太阳５ｍｉｎ的振动问题

Theory of Solar P-mode Oscillation

The last decade has witnessed a revolution in our knowledge about the interior of the Sun through the development of helioseismology. By analyzing observed frequencies of solar oscillations, it has been possible to obtain detailed information about many aspects of the properties of the Sun, and of the physics of matter in the solar interior. As a simplification, it is previously assumed that the oscillations are adiabatic, hence those effects of nonadiabatic and those processes that excite or damp the modes are neglected. However these processes also have significant effects on the oscillation frequencies, and the detailed knowledge about the interaction between the oscillations and the turbulence near the solar surface is lacked. Major efforts are currently under way to improve the discrepancy between theoretically calculated and actually observed solar P-mode frequencies, to solve the problem of excitation of solar P-modes. It is a fact that nonadiabatic pulsation investigations will probably remain a very active field in this research.