The relationship between the radio core-dominance parameter and spectral index in different classes of extragalactic radio sources (III)

Autor:	Pei, Zhi-Yuan, Fan, Jun-Hui, Bastieri, Denis, Yang, Jiang-He, Xiao, Hu-Bing, Yang, W. X.
Rok vydání:	2019
Předmět:	Astrophysics - Astrophysics of Galaxies Astrophysics - High Energy Astrophysical Phenomena
Druh dokumentu:	Working Paper
DOI:	10.1088/1674-4527/20/2/25
Popis:	Active galactic nuclei (AGNs) can be divided into two major classes, namely radio-loud and radio-quiet AGNs. A small subset of the radio-loud AGNs is called blazars, which are believed to be unified with Fanaroff-Riley type I and type II (FRI&II) radio galaxies. Following our previous work, we present a latest sample of 966 sources with measured radio flux densities of the core and extended components. The sample includes 83 BL Lacs, 473 FSRQs, 101 Seyferts, 245 galaxies, 52 FRIs&IIs and 12 unidentified sources. We then calculate the radio core-dominance parameters and spectral indices and study their relationship. Our analysis shows that the core-dominance parameters and spectral indices are quite different for different types of sources. We also corroborate that the correlation between core-dominance parameter and radio spectral index extends over all the sources in a large sample presented. Comment: arXiv admin note: substantial text overlap with arXiv:1811.08774
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1909.06177 Zobrazit plný text záznamu View this record from Arxiv