【摘要】 本文对一个耀斑主相动力学模型进行了谱诊断，包括同时计算ＣａＸＩＸ，Ｈα和ＣａＩＩＫ谱线轮廓演化系列．与地面光学观测及最新的Ｙｏｈｋｏｈ／ＢＣＳ观测结果比较显示，计算轮廓及其特性在实测的范围以内，从而说明该耀斑主相动力学模型在一般性反映耀斑主相演化方面的合理性，同时也意味着有相当一部分耀斑，其在主相演化过程中没有额外的加热源作用．更多还原

【Abstract】 Based on a hydrodynamical model of the gradual phase of solar flares, we have calculated both high temperature spectra (CaXIX) as well as low temperature ones (Hα and CaII K). The results show that the calculated spectra and their characteristics are consistent with common observations. This indicates that the hydrodynamical model of the gradual phase proposed by Gan and Fang (1990) can rather well reproduce the spectral observations. Meanwhile, it is shown that the extra heating is not necessary for quite a number of flares during their gradual phase.更多还原