Core-dominance parameter, black hole mass and jet-disc connection in Fermi blazars

TL;DR

This study investigates the connection between jet power, black hole mass, and accretion in Fermi and non-Fermi blazars, revealing differences in their properties and a tight link between jet activity and accretion processes.

Contribution

It provides a comparative analysis of Fermi and non-Fermi blazars, highlighting differences in their physical parameters and the relationship between jet power and accretion.

Findings

Fermi blazars have higher core-dominance, indicating stronger beaming.

Significant correlation exists between broad line emission and jet power.

Black hole mass and accretion contribute differently to jet power in the two blazar types.

Abstract

We study the relationship between jet power and accretion for Fermi and non-Fermi blazars, respectively. We also compare the relevant parameter between them. Our main results are as follows. (i) Fermi and non-Fermi blazars have significant difference in redshift, black hole mass, and broad line luminosity. (ii) Fermi blazars have higher average core-dominance parameter than non-Fermi blazars, which suggests that Fermi blazars have strong beaming effect. (iii) We find significant correlation between broad line emission and jet power for Fermi and non-Fermi blazars, respectively, which suggests a direct tight connection between jet and accretion. (iv) The accretion and black hole mass may have a different contribution to jet power for Fermi and non-Fermi blazars, respectively.