摘要
本文提出了处理分离的太阳活动体光谱不对称轮廓的一种方法──“多云模型”方法。在某些假设和一定的近似条件下利用本文提出的方法可同时得到太阳多个分离活动体的视向速度Ｖ，多普勒线宽△λ_Ｄ和线心光学深度τ_０，源函数Ｓ的近似值。文章给出了该方法的几个应用实例并进行了讨论。研究表明，计算所得的Ｖ和△λ_Ｄ的值是较为可靠的，二云模型是处理由两个分离活动体沿视线重叠而产生的不对称轮廓较为有效的方法。
A multi-cloud model method(MCM) is proposed in this paper to study the asymmetric profiles of spectral lines formed by discrete objects on the Sun.Under the conditions of certain assumptions and approximations, four parameters characterizing the radial velocity V,Doppler width △λD,source function S and optical depth at the line center τ0 within different clouds may be derived simultaneously by comparing theoretical profiles C(λ) with the observationa1 ones.Several application examples are given.Our study shows that the 2-cloud model is a powerful and effective method in dealing with non-Gaussian profiles and only on few occasions a 3-cloud model has to be considered.
基金
国家自然科学基金
