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arXiv 1202.1776astro-ph.CO
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论活动星系核的统一

On the Unification of Active Galactic Nuclei

Moshe Elitzur

摘要:

活动星系核(AGN)的环形遮蔽属性的不可避免的传播使人们普遍认为的1型和2型AGN本质上是相同的物体,从环面覆盖因子的分布中随机抽取的观点失效。相反,活动星系核是从这个分布中抽取的\emph{preferentially};类型2更有可能来自分布的高端,类型1来自其低端。与1型活动星系核相比,2型活动星系核具有较高的红外光度、较低的窄线光度和较高的康普顿厚X射线遮蔽率。如果不首先确定环面覆盖因子的内在分布函数,就无法进行有意义的统一统计研究。

英文摘要:

The inevitable spread in properties of the toroidal obscuration of active galactic nuclei (AGNs) invalidates the widespread notion that type 1 and 2 AGNs are intrinsically the same objects, drawn randomly from the distribution of torus covering factors. Instead, AGNs are drawn \emph{preferentially} from this distribution; type 2 are more likely drawn from the distribution higher end, type 1 from its lower end. Type 2 AGNs have a higher IR luminosity, lower narrow-line luminosity and a higher fraction of Compton thick X-ray obscuration than type 1. Meaningful studies of unification statistics cannot be conducted without first determining the intrinsic distribution function of torus covering factors.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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