# Observational View of Magnetic Fields in Active Galactic Nuclei Jets

## TL;DR

This paper reviews how linear polarization observations help understand magnetic field structures in AGN jets and constrain different emission models, advancing our knowledge of jet physics.

## Contribution

It provides a comprehensive overview of using polarization data to analyze magnetic fields and evaluate emission mechanisms in AGN jets.

## Key findings

- Polarization observations reveal magnetic field configurations in jets.
- Constraints on emission models based on polarization data.
- Insights into energy dissipation processes in AGN jets.

## Abstract

According to the currently favored picture, relativistic jets in active galactic nuclei (AGN) are launched in the vicinity of the black hole by magnetic fields extracting energy from the spinning black hole or the accretion disk. In the past decades, various models from shocks to magnetic reconnection have been proposed as the energy dissipation mechanism in the jets. This paper presents a short review on how linear polarization observations can be used to constrain the magnetic field structure in the jets of AGN, and how the observations can be used to constrain the various emission models.