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

Abstract MRC 0600–399, in the merging galaxy cluster A3376, is one of the unique head–tail radio galaxies that have 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 such a long distance while keeping its 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 a pseudo-3D visualization map of the reconstructed 3D cube of the Faraday dispersion function. 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 other observations, we concluded that the synchrotron radiation from the tip region of the northern jet originates from the magnetic field on the cold front.

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Publication Details

Journal
The Astrophysical Journal
Published
2025-10-01
DOI
https://doi.org/10.3847/1538-4357/adfc64
Primary Topic
Radio Astronomy Observations and Technology
Type
article
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article

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

Mami Machida, Takumi Ohmura, Hiroki Akamatsu, Tsutomu T. Takeuchi et al.
The Astrophysical Journal
Radio Astronomy Observations and Technology
article

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

Mami Machida, Takumi Ohmura, Hiroki Akamatsu, Tsutomu T. Takeuchi, Takuya Akahori, H. Nakanishi, W. D. Cotton, Taichi Igarashi, James O. Chibueze, Haruka Sakemi, Viral Parekh
article en

Abstract

Abstract MRC 0600–399, in the merging galaxy cluster A3376, is one of the unique head–tail radio galaxies that have 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 such a long distance while keeping its 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 a pseudo-3D visualization map of the reconstructed 3D cube of the Faraday dispersion function. 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 other observations, we concluded that the synchrotron radiation from the tip region of the northern jet originates from the magnetic field on the cold front.

The Astrophysical JournalVol. 992(1)
University of Nigeria (NG), Rikkyo University (JP), High Energy Accelerator Research Organization (JP), University of South Africa (ZA), Yamaguchi University (JP), Ishikawa Prefectural University (JP), National Radio Astronomy Observatory (US), South African Radio Astronomy Observatory (ZA), The Institute of Statistical Mathematics (JP), National Astronomical Observatory of Japan (JP), Space Research Organisation Netherlands (NL), Nagoya University (JP), The University of Tokyo (JP)
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Radio Astronomy Observations and Technology
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