I_a型超新星爆发理论(I):主要观测特征及其爆发机理

On Explosion Theory of Supernova Type I_a (I):Main Observational Featuares and Its Explosion Theory

从光谱特性、光变曲线、爆发能量、在星系内分布特征等诸方面，简要介绍了I_a型超新星（SNI_a）的主要观测特征．并根据近年来人们提出的改进标准模型阐述了SNI_a爆发的物理原因和物理过程以及核合成特征．

In the former part of this paper, the main observational features of supernova type Ia arebriefly introduced from their spectra, light curves, explosion energy as well as their distribationsin galaxies, etc. In the latter part of this paper, basing on the improved standard model suggestedin recent years, we describe the physics cause and process of type Ia supernova explosions as wellas their nucleosynthesis features.