论文标题

$γ$ ray Blazars的光束和未打开的排放

Beamed and unbeamed emission of $γ$-ray blazars

论文作者

Pei, Zhiyuan, Fan, Junhui, Yang, Jianghe, Bastieri, Denis

论文摘要

无线电发射的两个组成模型已用于解释活性银河核(AGN),尤其是Blazars的某些无线电观测特性。在这项工作中,我们将两个组件的想法扩展到$γ$ ray的排放,并假设Blazars的总$γ$ -Ray输出由相对偏光和未打开的组件组成。基本思想利用了无线电核心占用参数与$γ$ -Ray光束系数之间的相关性。为此,我们评估了从费米大面积望远镜(Fermi-lat)的第四个源目录中获得的大量584个大部分样本的相关性,并将其$γ$ ray-ray核心优势参数与无线电核心优势参数相关联。然后,使用$γ$ - 射线光束系数来估计光束和未打印的组件。我们的分析证实,Blazars中的$γ$ - 射线发射主要来自光束的组件。

A two-component model of radio emission has been used to explain some radio observational properties of Active Galactic Nuclei (AGNs) and, in particular, of blazars. In this work, we extend the two-component idea to the $γ$-ray emission and assume that the total $γ$-ray output of blazars consists of relativistically beamed and unbeamed components. The basic idea leverages the correlation between the radio core-dominance parameter and the $γ$-ray beaming factor. To do so, we evaluate this correlation for a large sample of 584 blazars taken from the fourth source catalog of the Fermi Large Area Telescope (Fermi-LAT) and correlated their $γ$-ray core-dominance parameters with radio core-dominance parameters. The $γ$-ray beaming factor is then used to estimate the beamed and unbeamed components. Our analysis confirms that the $γ$-ray emission in blazars is mainly from the beamed component.

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