FRIs和FRIIs星系观测性质的研究

发布时间：2018-02-26 14:42

本文关键词： 活动星系核射电星系谱指数 X射线辐射能谱分布　出处：《广州大学》2010年硕士论文　论文类型：学位论文

【摘要】： 在1974年,Fanaro?和Riley首次提出根据射电星系在178MHz处的光度和射电形态,可以将射电星系分为两类,即Fanaro?-Riley type Is(FRIs)和Fanaro?-Riley typeIIs(FRIIs),且FRIs的光度要小于FRIIs的。自此之后,人们一直致力于分析这两类星系的本质。目前除了经典方法,还有多种方法可以区分Fanaro?-Riley星系。本文将从光学谱指数和X波段的光度研究两类射电星系的性质,为此收集了一个大的样本,并由此研究了光学谱指数、X光度及能谱分布。第一章介绍了射电星系的相关性质及其结构。综述了人们对于Fanaro?-Riley星系分类的研究。第二章我们从光学数据出发,计算了光学谱指数。比较FRIs和FRIIs光学谱指数的分布,发现FRIs的平均光学谱指数要大于FRIIs,
[Abstract]:In 1974, Fanaro? And Riley proposed for the first time that radio galaxies can be classified into two categories, Fanaro3, according to their luminosity and radio morphology at 178 MHz. Riley type Isa FRIsa and Fanaro? Since then, people have been trying to analyze the nature of these two kinds of galaxies. Besides the classical method, there are many ways to distinguish between the two kinds of galaxies. In this paper, we will study the properties of two kinds of radio galaxies in terms of optical spectral index and X-band luminosity. A large sample is collected for this purpose, and the optical spectral exponent X photometry and energy spectrum distribution are also studied. Chapter 1 introduces the properties and structure of radio galaxies. A study of the classification of Riley galaxies. In the second chapter, we calculate the optical spectral index from optical data. Compared with the distribution of FRIs and FRIIs optical spectral index, we find that the average optical spectral index of FRIs is larger than that of FRI Isa.
【学位授予单位】：广州大学
【学位级别】：硕士
【学位授予年份】：2010
【分类号】：P157.7

【引证文献】