射电噪类星体的核主导参数R与聚束效应  

The Core Dominance Parameter of Quasar and the Beaming Effect

作　　者：李怀珍[1] 陈洛恩[1] 卢方武[1] 高全归[1] 

机构地区：[1]玉溪师范学院物理系,云南玉溪653100

出　　处：《云南师范大学学报（自然科学版）》2011年第6期19-22,共4页Journal of Yunnan Normal University:Natural Sciences Edition

基　　金：国家自然科学基金资助项目(10878013);云南省应用基础研究计划面上项目(2007A230M);云南省高校科技创新团队支持计划资助

摘　　要：从相关文献中我们收集了141个具有核光度和扩展光度的射电噪类星体,并研究了核主导参数R与核光度LC、扩展光度LE以及红衣z之间的关系。结果表明R与LC之间存在强的正相关,R与LE之间存在强的负相关,而R与z之间有弱的甚至没有相关性,这与樊军辉和张江水得到的结果是一致的。他们之间的这些相关性能被聚束效应解释。In this paper,we have chosen a sample of 141 quasars which have both core luminosities and extended luminosities,and investigated the relationship between core-dominated parameter and the core,and extended luminosities,and as well as between core-dominated parameter and redshift.The results show that there is a clear correlation between the core-dominated parameter and core luminosities,and an anti-correlation between core-dominated parameter and extended luminosities.However,there is a weak or even no correlation.This is consistent with the results reported by Fan and Zhang（2003）.The correlation between core-dominated parameter and the core and extended luminosities can be explained by the beaming effect.

关 键 词：类星体 核主导参数R 聚束效应 

分 类 号：P14[天文地球—天体物理]