一个新光度指示器:熵缩放指数  

A new luminosity indicator: Entropy scaling index

作　　者：陆睿静[1] 邓家干[1] 

机构地区：[1]广西大学物理科学与工程技术学院,广西南宁530004

出　　处：《广西大学学报（自然科学版）》2010年第5期856-860,共5页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(10747001);广西自然科学基金资助项目(2010GXNSFA013112)

摘　　要：熵缩放指数可以用来量度伽玛暴光变的复杂性。对目前已知红移的78个暴的光变进行统计分析发现,这个缩放指数与伽玛暴的光度和谱的峰值能量两两相关,对这三个物理量进行偏相关分析发现,缩放指数和谱的峰值能量之间没有相关性,且在这两者之间,暴的光度更强依赖于缩放指数。这结果表明缩放指数和谱的峰值能量都可以作为独立的光度指示器。An entropy scaling index is used to measure the complexity of the light curves in Gamma Ray Bursts（GRBs）.The statistical analysis on 78 redshifts currently known in GRBs showed that the correlations between the scaling index,the peak luminosity and the spectral peak energy for the GRBs in our sample.Further partial correlation analysis among the three quantities showed that there was no correlation between the scaling index and the spectral peak energy,and the peak luminosity depends more significantly on the scaling index than the spectral peak energy,implying the two quantities can be independence variable in the luminosity indicator.

关 键 词：伽玛暴 熵 缩放指数 光度指示器 

分 类 号：P142[天文地球—天体物理]