The De-beamed γ-Ray Emissions in Blazars

Blazars (BL Lacertae objects and flat spectrum radio quasars) are strong γ-ray emitters, the γ-ray emissions are strongly beamed. In this work, we compiled a sample of Fermi blazars with available beaming factors, δ _R , to investigate the correlation between the γ-ray flux density, logf _γ, and redshift, logz for the whole sample and the subclasses of the present sample. The analysis shows that there is no correlation between logf _γ and logz for the observed γ-ray flux density, but there are strong correlations between the de-beamed flux densities, logf _γ ^db and logz for the whole sample and the subclasses. Our results confirm that the γ-ray emissions are strongly beamed and imply that it is possible for one to use the radio beaming factor, δ _R for the beaming effect discussions in the γ-ray bands for Fermi blazars.