The beaming effect and γ-ray emission for Fermi blazars

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.