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The strength of the total magnetic field in our Milky Way from radio Zeeman and synchrotron measurements is about 6 muG near the Sun and several mG in dense clouds, pulsar wind nebulae, and filaments near the Galactic Center. Diffuse…

Astrophysics · Physics 2009-11-13 Rainer Beck

Faraday rotation measures (RMs) of extragalactic radio sources provide information on line-of-sight magnetic fields, including contributions from our Galaxy, source environments, and the intergalactic medium (IGM). Looking at differences in…

Cosmology and Nongalactic Astrophysics · Physics 2019-06-26 T. Vernstrom , B. Gaensler , L. Rudnick , H. Andernach

Large-scale coherent magnetic fields in the intergalactic medium are presumed to play a key role in the formation and evolution of the cosmic web, and in large scale feedback mechanisms. However, they are theorized to be extremely weak, in…

Cosmology and Nongalactic Astrophysics · Physics 2021-03-23 Ariel Amaral , Tessa Vernstrom , Bryan M. Gaensler

Current high resolution observations of galaxy clusters reveal a dynamical intracluster medium (ICM). The wealth of structures includes signatures of interactions between active galactic nuclei (AGN) and the ICM, such as cavities and…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 E. Roediger , M. Brueggen , A. Simionescu , H. Boehringer , S. Heinz

We use Faraday rotation measurements from the latest catalog LoTSS DR2 from LOFAR to probe intergalactic magnetic fields. To identify the extragalactic component of the observed rotation measure (RM) we use two different techniques:…

Cosmology and Nongalactic Astrophysics · Physics 2024-04-29 Kyrylo Bondarenko , Alexey Boyarsky , Anastasia Sokolenko , Ievgen Vovk

The presence of magnetic fields in the intra-cluster medium of galaxy clusters is now well estabilished. It is directly revealed by the presence of cluster-wide radio sources: radio halos and radio relics. In the last years increasing…

Cosmology and Nongalactic Astrophysics · Physics 2010-09-08 A. Bonafede , L. Feretti , M. Murgia , F. Govoni , G. Giovannini , V. Vacca

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

We present new 6 and 20 cm Very Large Array (VLA) observations of polarized continuum emission of roughly 0.5 square degrees of the Galactic center (GC) region. The 6 cm observations detect diffuse linearly-polarized emission throughout the…

Astrophysics of Galaxies · Physics 2015-05-27 C. J. Law , M. A. Brentjens , G. Novak

Faraday rotation measures (RMs) of fast radio bursts (FRBs) offer the prospect of directly measuring extragalactic magnetic fields. We present an analysis of the RMs of ten as yet non-repeating FRBs detected and localized to host galaxies…

We have measured the Faraday rotation toward a large sample of polarized radio sources behind the Large Magellanic Cloud (LMC), to determine the structure of this galaxy's magnetic field. The magnetic field of the LMC consists of a coherent…

The degree to which the formation and evolution of clouds and filaments in the interstellar medium is regulated by magnetic fields remains an open question. Yet the fundamental properties of the fields (strength and 3D morphology) are not…

Astrophysics of Galaxies · Physics 2020-10-21 Stefan Reissl , Amelia M. Stutz , Ralf S. Klessen , Daniel Seifried , Stefanie Walch

We investigate whether the method of wavelet-based Faraday rotation measure (RM) Synthesis can help us to identify structures of regular and turbulent magnetic fields in extended magnetized objects, such as galaxies and galaxy clusters.…

Instrumentation and Methods for Astrophysics · Physics 2015-06-04 R. Beck , P. Frick , R. Stepanov , D. Sokoloff

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

The detection of filaments in the cosmic web will be crucial to distinguish between the possible magnetogenesis scenarios and future large polarization surveys will be able to shed light on their magnetization level. In this work, we use…

Cosmology and Nongalactic Astrophysics · Physics 2018-11-29 Nicola Locatelli , Franco Vazza , Paola Domínguez-Fernández

Magnetic fields in the intracluster medium (ICM) affect the structure and the evolution of galaxy clusters. However, their properties are largely unknown, and measuring magnetic fields in galaxy clusters is challenging, especially on…

Astrophysics of Galaxies · Physics 2020-10-14 Yue Hu , A. Lazarian , Yuan Li , Irina Zhuravleva , Marie-Lou Gendron-Marsolais

Future observations with next generation radio telescopes will help us to understand the presence and the evolution of magnetic fields in galaxy clusters through the determination of the so-called Rotation Measure (RM). In this work, we…

We present 3-D MHD and synthetic numerical simulations to follow the evolution of randomly magnetized intra-cluster medium plasma under the effects of powerful, light, hypersonic and bipolar jets. We prescribe the cluster magnetic field…

Cosmology and Nongalactic Astrophysics · Physics 2011-11-07 Martín Huarte-Espinosa , Martin Krause , Paul Alexander

Primordial Magnetic Fields (PMFs) -- magnetic fields originating in the early Universe and permeating the cosmological scales today -- can explain the observed microGauss-level magnetisation of galaxies and their clusters. In light of…

Cosmology and Nongalactic Astrophysics · Physics 2026-04-29 Salome Mtchedlidze , Franco Vazza , Xiaolong Du , Ettore Carretti , Chiara Stuardi , Shane Patrick O'Sullivan

The aim of this work is to investigate the average properties of the intra-cluster medium (ICM) magnetic fields, and to search for possible correlations with the ICM thermal properties and cluster radio emission. We have selected a sample…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 A. Bonafede , F. Govoni , L. Feretti , M. Murgia , G. Giovannini , M. Brueggen

The measurement of magnetic fields in cosmic web filaments can be used to reveal the magnetogenesis of the Universe. In previous work, we produced first estimates of the field strength and its redshift evolution using the Faraday Rotation…

Cosmology and Nongalactic Astrophysics · Physics 2025-01-22 E. Carretti , F. Vazza , S. P. O'Sullivan , V. Vacca , A. Bonafede , G. Heald , C. Horellou , S. Mtchedlidze , T. Vernstrom
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