日珥线光谱的降维法分析

本文提出了多搜索变量的目标函数直接优化法。该方法不涉及目标函数的导数计算,通用性强;同时该方法可控制搜索变量在值域内取值,这在一定程度上保证了解的可靠性。用此方法,本文分析了1984年2月18日太阳边缘环珥的一些Hα谱线,结果表明,本文方法具有收敛半径大,精度高的特点。

Analysis of the Line Spectrum of A Prominence by Means of the Dimension Descending Method

In this paper,the dimension descending method is proposed to fit the Ha line profiles of a solar prominence.The method is very suitable to the fitting of the multivariable objective function and the derivation of the objective function need not be taken into account when the line profiles are fitted.Especially,the variations in the fitting parameters can be controllde within their defined boundaries,respectively,by means of this method,and therefore the reliability of the solution is ensured to a certain extent.For examples,some asymmtrical line profiles of the loop prominence observed on Feb.18,1984 are fitted by using this method.It is found that the method has some characteristics,like the results with high accuracy and large convergent redii.