Three-Dimensional Polarimetric Structure of Jets from Radio Galaxy MRC 0600-399 in A3376

TL;DR

This study uses MeerKAT polarization data to analyze the complex Faraday structure of the radio galaxy MRC 0600-399, revealing magnetic field interactions with the cold front that influence jet morphology.

Contribution

It provides a detailed 3D Faraday depth visualization of MRC 0600-399, linking magnetic field structures to jet features and cold front interactions.

Findings

Complex Faraday depth structure observed

Clear Faraday depth gap at jet tip

Magnetic fields on cold front influence jet morphology

Abstract

MRC 0600-399, in the merging galaxy cluster Abell 3376, is one of the unique Head-Tail radio galaxies having abruptly bending structures, the origin of which is still under discussion. A previous study suggested that the interaction between the jets and the magnetic fields on the cold front has produced such an outstanding feature; however, it is still not known how the jet propagates the long distance keeping the sharp shape. In this study, we performed a polarization analysis of MRC 0600-399 and a nearby radio source using MeerKAT L-band data. To interpret the Faraday structure, we constructed the Pseudo-3D visualization map of the reconstructed Faraday dispersion function 3D cube. MRC 0600-399 has a complicated Faraday depth structure, and some of the Faraday depth features are in good agreement with the 2D structure on the celestial sphere. For the northern jet of MRC 0600-399, the Faraday depth values show a clear gap at the tip region. Based on the polarization analysis and comparison with the other observation, we concluded that the synchrotron radiation from the tip region of the northern jet originates from the magnetic field on the cold front.