The beaming effect and γ-ray emission for Fermi blazars  

作　　者：Yong-Yun Chen Xiong Zhang Ding-Rong Xiong Si-Ju Wang Xiao-Ling Yu 

机构地区：[1]Department of Physics, Yunnan Normal University, Kunming 650500, China [2]Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China [3]Dongxing Middle School, Chuxiong 675000, China

出　　处：《Research in Astronomy and Astrophysics》2016年第1期107-116,共10页天文和天体物理学研究（英文版）

基　　金：the Science Foundation of Yunnan Province of China (Grant Nos.2012F13140 and 2010CD046);supported by the National Natural Science Foundation of China (Grant Nos.11063004,11163007 and U1231203);the High-Energy Astrophysics Science and Technology Innovation Team of Yunnan Higher School and Yunnan Gravitation Theory Innovation Team (2011c1);supported by the research innovation fund for graduate students,Yunnan Normal University (yjs201566)

摘　　要：We study the γ-ray luminosity and beaming effect for Fermi blazars.Our results are as follows.（i） There are significant correlations between γ-ray luminosity and radio core luminosity,and between γ-ray luminosity and R_v,which suggests that the γ-ray emissions have a strong beaming effect,（ⅱ） Using the L_（ext）/M_（abs） as an indicator of environment effects,we find that there is no significant correlation betweenγ-ray luminosity and L_（ext）/M_（abs） for all sources when we remove the effect of redshift.Flat spectrum radio quasars considered alone also do not show a significant correlation,but BL Lacertae objects（BL Lacs） still show a significant correlation when we remove the effect of redshift.These results suggest that the γ-ray emission may be affected by the environment on a kiloparsec scale for BL Lacs.We study the γ-ray luminosity and beaming effect for Fermi blazars.Our results are as follows.（i） There are significant correlations between γ-ray luminosity and radio core luminosity,and between γ-ray luminosity and R_v,which suggests that the γ-ray emissions have a strong beaming effect,（ⅱ） Using the L_（ext）/M_（abs） as an indicator of environment effects,we find that there is no significant correlation betweenγ-ray luminosity and L_（ext）/M_（abs） for all sources when we remove the effect of redshift.Flat spectrum radio quasars considered alone also do not show a significant correlation,but BL Lacertae objects（BL Lacs） still show a significant correlation when we remove the effect of redshift.These results suggest that the γ-ray emission may be affected by the environment on a kiloparsec scale for BL Lacs.

关 键 词：BL Lacerate objects： general -- quasars： general -- gamma-rays： galaxies -- radio continuumgalaxies 

分 类 号：P157.7[天文地球—天文学] O431[机械工程—光学工程]