The broadband emission properties of AGN jets

TL;DR

This paper investigates the high-energy emission mechanisms of blazar jets by analyzing a comprehensive broadband spectral energy distribution database of AGN, aiming to identify the origin of gamma-ray emission and its correlation with jet properties.

Contribution

It constructs a broadband SED database for the MOJAVE AGN sample and explores the emission mechanisms and correlations between high-energy and jet properties.

Findings

Double-humped SED profiles observed in blazars.

Potential correlations between VLBI jet features and gamma-ray emission.

Insights into leptonic and hadronic processes in high-energy emission.

Abstract

The origin of the high-energy emission of blazars is still a matter of debate. To investigate the emission mechanism of extragalactic outflows and to pin down the location of the emission, we have constructed a broadband spectral energy distribution (SED) database covering from the radio to the gamma-ray band for the complete MOJAVE sample, which consists of 135 relativistically beamed AGN with well-studied parsec-scale jets. Typically, the broadband SEDs of blazars shows a double-humped profile. It is believed that the lower-energy hump is due to synchrotron emission from the radio jet, and the higher-energy hump is generated by i) inverse-Compton upscattered seed photons (leptonic), ii) proton-induced shower (hadronic). Combining the results of high-resolution VLBI observations and the gamma-ray properties of the MOJAVE sources, we attempt to reveal the origin of the high-energy emission in relativistic jets, and search for correlations between VLBI and high-energy properties.