The beaming effect and $\rmγ$-ray emission for Fermi blazars

Abstract

We study the $\rmγ$-ray luminosity and beaming effect for Fermi blazars. Our results are as follows. (i) There are significant correlations between $\rmγ$-ray luminosity and radio core luminosity, and between $\rmγ$-ray luminosity and $\rm{R_{v}}$, which suggests that the $\rmγ$-ray emissions have strong beaming effect. (ii) Using the $\rm{L_{ext}/M_{abs}}$ as an indicator of environment effects, we find that there have no significant correlation between $\rmγ$-ray luminosity and $\rm{L_{ext}/M_{abs}}$ for all sources when remove the effect of redshift. FSRQs considered alone also do not show a significant correlation, while BL Lacs still show a significant correlation when remove the effect of redshift. These results suggest that the $\rmγ$-ray emission may be affected by environment on the kiloparsec-scale for BL Lacs.

13pages,6figures,has been accepted for Research in Astronomy andAstrophysics. arXiv admin note: text overlap with arXiv:0903.2043, arXiv:1001.0731 by other authors