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The existence of magnetic fields associated with the intracluster medium in clusters of galaxies is now well established through different methods of analysis. Magnetic fields are investigated in the radio band from studies of the rotation…

Astrophysics · Physics 2009-11-10 Federica Govoni , Luigina Feretti

Understanding turbulence within the Intracluster Medium (ICM) of galaxy clusters is pivotal for comprehending their evolution and dynamics. Employing 3D magnetohydrodynamic (MHD) simulations of galaxy cluster mergers, we examine the…

Astrophysics of Galaxies · Physics 2025-07-30 Yue Hu , Alex Lazarian , G. Brunetti , John A. ZuHone

Magnetic fields in galaxy clusters have been measured using a variety of techniques, including: studies of synchrotron relic and halo radio sources within clusters, studies of inverse Compton X-ray emission from clusters, surveys of Faraday…

Astrophysics · Physics 2009-11-07 C. L. Carilli , G. B. Taylor

Magnetic fields in galaxy clusters can be investigated using a variety of techniques. Recent studies including radio halos, Inverse Compton hard X-ray emissions and Faraday rotation measure, are briefly outlined. A numerical approach for…

Astrophysics · Physics 2007-05-23 Federica Govoni , Matteo Murgia

The presence of magnetic fields in the intracluster medium in clusters of galaxies has been revealed through several different observational techniques. These fields may be dynamically important in clusters as they will provide additional…

Astrophysics · Physics 2015-06-24 Tracy E. Clarke

During structure formation, energetic events and random motions of the hot gas residing inside galaxy clusters (the intracluster medium, ICM) generate turbulent motions. Radio diffuse emission probes the presence of magnetic fields and…

Cosmology and Nongalactic Astrophysics · Physics 2012-09-12 M. S. Nakwacki , E. M. de Gouveia Dal Pino , G. Kowal , R. Santos de Lima

An important area of study of cosmic magnetic fields is on the largest scales, those of clusters of galaxies. In the last decade it has become clear that the intra-cluster medium (ICM) in clusters of galaxies is magnetized and that magnetic…

Astrophysics · Physics 2009-11-10 L. Feretti , M. Johnston-Hollitt

The central molecular zone (CMZ) plays an essential role in regulating the nuclear ecosystem of our Galaxy. To get an insight into the magnetic fields of the CMZ, we employ the Gradient Technique (GT), which is rooted in the anisotropy of…

Astrophysics of Galaxies · Physics 2022-02-09 Yue Hu , A. Lazarian , Q. Daniel Wang

Magnetic fields and their dynamical interplay with matter in galaxy clusters contribute to the physical properties and evolution of the intracluster medium. However, the current understanding of the origin and properties of cluster magnetic…

Cosmology and Nongalactic Astrophysics · Physics 2024-02-12 Yue Hu , C. Stuardi , A. Lazarian , G. Brunetti , A. Bonafede , Ka Wai Ho

Magnetic fields permeate the Universe, including galaxy clusters, and affect the thermodynamical properties of the intra-cluster medium (ICM). Cosmological simulations predict that seed magnetic fields are amplified up to the $\mu$G-level…

Cosmology and Nongalactic Astrophysics · Physics 2025-08-14 A. Pagliotta , C. J. Riseley , A. Bonafede , C. Stuardi , F. Loi

We discuss a novel technique of manipulating X-ray images of galaxy clusters to reveal the nature of small-scale density/temperature perturbations in the intra cluster medium (ICM). As we show, this technique can be used to differentiate…

Cosmology and Nongalactic Astrophysics · Physics 2016-08-24 E. Churazov , P. Arevalo , W. Forman , C. Jones , A. Schekochihin , A. Vikhlinin , I. Zhuravleva

Magnetic fields, while ubiquitous in many astrophysical environments, are challenging to measure observationally. Based on the properties of anisotropy of eddies in magnetized turbulence, the Velocity Gradient Technique is a method…

Radio observations of galaxy clusters show that there are $\mu$G magnetic fields permeating the intra-cluster medium (ICM), but it is hard to accurately constrain the strength and structure of the magnetic fields without the help of…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Hao Xu , Federica Govoni , Matteo Murgia , Hui Li , David C. Collins , Michael L. Norman , Renyue Cen , Luigina Feretti , Gabriele Giovannini

The effects of many physical processes in the intracluster medium of galaxy clusters imprint themselves in X-ray surface brightness images. It is therefore important to choose optimal methods for extracting information from and enhancing…

Cosmology and Nongalactic Astrophysics · Physics 2016-06-15 J. S. Sanders , A. C. Fabian , H. R. Russell , S. A. Walker , K. M. Blundell

Magnetic fields in the intra-cluster medium of galaxy clusters have been studied in the past years through different methods. In the next years the up-coming generation of radio telescopes is going to provide new data that have the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 A. Bonafede , K. Dolag , F. Stasyszyn , G. Murante , S. Borgani

In this study, we apply the Velocity Gradient Technique (VGT) to the merging Centaurus galaxy. We compare gradient maps derived from the PHANGS-ALMA survey using CO emission lines with magnetic field tracings from dust polarization data…

Astrophysics of Galaxies · Physics 2024-06-07 Quynh Lan Nguyen , Yue Hu , Alex Lazarian

Little is known about the origin and basic properties of magnetic fields in clusters of galaxies. High conductivity in magnetized interstellar plasma suggests that galactic magnetic fields are (at least partly) ejected into intracluster…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Yinon Arieli , Yoel Rephaeli , Michael L. Norman

We review the present theoretical and numerical understanding of magnetic field amplification in cosmic large-scale structure, on length scales of galaxy clusters and beyond. Structure formation drives compression and turbulence, which…

Cosmology and Nongalactic Astrophysics · Physics 2018-11-28 J. Donnert , F. Vazza , M. Brüggen , J. ZuHone

Magnetic fields pervade in the interstellar medium (ISM) and are believed to be important in the process of star formation, yet probing magnetic fields in star formation regions is challenging. We propose a new method to use Faraday…

Astrophysics of Galaxies · Physics 2018-06-27 M. Tahani , R. Plume , J. C. Brown , J. Kainulainen

We investigate the possibility for the SKA to detect and study the magnetic fields in galaxy clusters and in the less dense environments surrounding them using Faraday Rotation Measures. To this end, we produce 3-dimensional magnetic field…

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