γ暴能谱硬度系数的分布及其分类特征

The distributions of hardness ratios and new classific characteristics of Gamma ray bursts

采用非参量化线性相关性分析方法分析康普顿空间天文台 ( CGRO)上的 BATSE仪器观测到的γ暴不同能道流量间的相关性 ,提出新的γ暴能谱硬度系数的定义 ,并分析其分布特征 ,进一步证实了γ暴谱硬度系数与持续时间之间的反相关性 ,并对这个反相关性提出新的解释 :软谱长暴、短暴硬谱 ;同时 ,从定量上给出按谱硬度系数对 γ暴进行分类的依据 ,提出

In this paper, the correlations among fluences of different channels of the gamma ray bursts (GRBs) observed by BATSE in CGRO are analysed by non parameter linear correlation analyse method, new definitions of hardness ratios of GRBs are presented and the attributes of their distribution are investigated. The anti correlation between hardness ratio and duration are approved with a new interpret: Soft GRBs are predominantly longer, and shorter ones tend to be harder. Also, new quantificational classification of GRB with hardness ratio is presented.