Cosmic Magnetism in Centimeter and Meter Wavelength Radio Astronomy
Takuya Akahori, Hiroyuki Nakanishi, Yoshiaki Sofue, Yutaka Fujita,, Kiyotomo Ichiki, Shinsuke Ideguchi, Osamu Kameya, Takahiro Kudoh, Yuki Kudoh,, Mami Machida, Yoshimitsu Miyashita, Hiroshi Ohno, Takeaki Ozawa, Keitaro, Takahashi, Motokazu Takizawa, Dai G. Yamazaki
TL;DR
This paper reviews how centimeter and meter wavelength radio observations have advanced our understanding of cosmic magnetic fields across various astrophysical environments, highlighting methods like polarization analysis and Faraday tomography.
Contribution
It synthesizes current knowledge of cosmic magnetism and emphasizes the role of radio techniques in studying magnetic fields in the universe.
Findings
Radio observations have revealed the structure of magnetic fields in galaxies and clusters.
Methods like Faraday tomography provide detailed insights into magnetic field configurations.
Understanding of cosmic magnetic field origins remains incomplete.
Abstract
Magnetic field is ubiquitous in the Universe and it plays essential roles in various astrophysical phenomena, yet its real origin and evolution are poorly known. This article reviews current understanding of magnetic fields in the interstellar medium, the Milky Way Galaxy, external galaxies, active galactic nuclei, clusters of galaxies, and the cosmic web. Particularly, the review concentrates on the achievements that have been provided by centimeter and meter wavelength radio observations. The article also introduces various methods to analyze linear polarization data, including synchrotron radiation, Faraday rotation, depolarization, and Faraday tomography.
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