Multi-band properties of superluminal AGN detected by Fermi/LAT

TL;DR

This study analyzes the multi-band properties of superluminal AGN detected by Fermi/LAT, revealing correlations between gamma-ray, optical, and radio emissions and suggesting different emission regions in jets.

Contribution

It provides a comprehensive statistical analysis of multi-band data for superluminal AGN, highlighting distinct correlations and emission regions compared to prior studies.

Findings

High gamma-ray detection rate for optically bright AGN

Significant correlation between gamma-ray and optical/radio luminosities

Different behaviors of gamma-ray loudness in quasars and BL Lacs

Abstract

We perform a multi-band statistical analysis of core-dominated superluminal active galactic nuclei (AGN) detected with Fermi Large Area Telescope (LAT). The detection rate of $\gamma$-ray jets is found to be high for optically bright AGN. There is a significant correlation between the $\gamma$-ray luminosity and the optical nuclear and radio (15 GHz) luminosities of AGN. We report a well defined positive correlation between the $\gamma$-ray luminosity and the radio-loudness for quasars and BL Lacertae type objects (BL Lacs). The slope of the best-fit line is significantly different for quasars and BL Lacs. The relations between the optical and radio luminosities and the $\gamma$-ray loudness are also examined, showing a different behavior for the populations of quasars and BL Lacs. Statistical results suggest that the $\gamma$-ray, optical and radio emission is generated at different locations and velocity regimes along the parsec-scale jet.