Correlation between γ-ray and radio emissions in Fermi blazars

被引：8

作者：

Wu, De-Xiang ^{[1
,2
]}

Fan, Jun-Hui ^{[1
,2
]}

Liu, Yi ^{[1
,2
]}

Yang, Jiang-He ^{[1
,3
]}

Hao, Jing-Meng ^{[1
,2
]}

Pei, Zhi-Yuan ^{[1
]}

Lin, Chao ^{[1
]}

机构：

[1] Guangzhou Univ, Ctr Astrophys, Guangzhou 510006, Guangdong, Peoples R China

[2] Dept Educ Guangdong Prov, Astron Sci & Tech Res Lab, Guangzhou, Peoples R China

[3] Hunan Univ Arts & Sci, Dept Phys & Elect Sci, Changde 415000, Peoples R China

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN | 2014年 / 66卷 / 06期

基金：

中国国家自然科学基金;

关键词：

BL Lacertae objects: general; galaxies: jets; telescopes: Fermi (LAT); ACTIVE GALACTIC NUCLEI; SPECTRAL INDEX; DOPPLER FACTOR; VARIABILITY; CATALOG;

D O I：

10.1093/pasj/psu111

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Blazars as a special subclass of Active Galactic Nuclei (AGNs) consist of two classes, namely Flat Spectrum Radio Quasars (FSRQs) and BL Lacertae objects (BL Lacs). We compiled information about core and extended radio emissions of 124 gamma-ray (0.1-100 GeV) loud blazars (79 FSRQs and 45 BL Lacs). Correlation is found between gamma-ray and 5 GHz radio luminosities when the dependence of these two parameters on redshift is taken into account. The correlation suggests that, as well as the radio emission, the gamma-ray emission may be strongly beamed. We find no correlation between the gamma-ray luminosity (L-gamma) and the core-dominance parameter R=L-core/L-ext, where L-core is the VLBI core emission at 5 GHz, L-ext is the extended (lobe) radio emissions at 5 GHz, but there is a strong correlation between log(L-gamma/L-ext) and log(1+R).

引用

页数：11

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