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The goal of this work is to put constraints on the strength and structure of the magnetic field in the cluster of galaxies A2382. We investigate the relationship between magnetic field and Faraday rotation effects in the cluster, using…

Astrophysics · Physics 2009-11-13 D. Guidetti , M. Murgia , F. Govoni , P. Parma , L. Gregorini , H. R. de Ruiter , R. A. Cameron , R. Fanti

We present a numerical approach to investigate the relationship between magnetic fields and Faraday rotation effects in clusters of galaxies. We can infer the structure and strength of intra-cluster magnetic fields by comparing our…

Astrophysics · Physics 2009-11-10 M. Murgia , F. Govoni , L. Feretti , G. Giovannini , D. Dallacasa , R. Fanti , G. B. Taylor , K. Dolag

The goal of this work is to investigate the power spectrum of the magnetic field associated with the giant radio halo in the galaxy cluster A665. For this, we present new deep Very Large Array total intensity and polarization observations…

Cosmology and Nongalactic Astrophysics · Physics 2010-02-08 V. Vacca , M. Murgia , F. Govoni , L. Feretti , G. Giovannini , E. Orrú , A. Bonafede

We investigate the magnetic field power spectrum in the cool core galaxy cluster A2199 by analyzing the polarized emission of the central radio source 3C338. The polarized radiation from the radio emitting plasma is modified by the Faraday…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 V. Vacca , M. Murgia , F. Govoni , L. Feretti , G. Giovannini , R. A. Perley , G. B. Taylor

We aim to unveil their 3-dimensional geometry of Abell 2255 through WSRT observations at 18, 21, 25, 85, and 200 cm. The polarization images of the cluster were processed through rotation measure (RM) synthesis, producing three final RM…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 R. F. Pizzo , A. G. de Bruyn , G. Bernardi , M. A. Brentjens

We are developing a new approach to investigate cluster magnetic field strengths and structures. It is based on the comparison of simulated Rotation Measure and radio halo images, obtained from 3-dimensional multi-scale cluster magnetic…

Astrophysics · Physics 2007-05-23 F. Govoni , L. Feretti , M. Murgia , G. B. Taylor , G. Giovannini , D. Dallacasa

We present Faraday rotation data for radio sources in the centers of the Abell clusters A400 and A2634. These clusters contain large (> 100 kpc), tailed radio sources, each attached to the central cD galaxy. These clusters do not have…

Astrophysics · Physics 2009-11-07 Jean A. Eilek , Frazer N. Owen

Magnetic fields are ubiquitous in galaxy clusters, yet their radial profile, power spectrum, and connection to host cluster properties are poorly known. Merging galaxy clusters hosting diffuse polarized emission in the form of radio relics…

Astrophysics of Galaxies · Physics 2021-02-03 C. Stuardi , A. Bonafede , L. Lovisari , P. Domínguez-Fernández , F. Vazza , M. Brüggen , R. J. van Weeren , F. de Gasperin

A514 contains six extended and polarized radio sources located at various projected distances from the cluster center. Here we present a detailed study of these six radio sources in total intensity and polarization using the Very Large…

Astrophysics · Physics 2009-11-07 F. Govoni , G. B. Taylor , D. Dallacasa , L. Feretti , G. Giovannini

We present new, multiwavelength Very Large Array observations of the 3 radio galaxies in the cluster Abell 119: 0053-015, 0053-016 and 3C 29. The first two radio galaxies, which lie close to the cluster center, show a narrow-angle-tailed…

Astrophysics · Physics 2007-05-23 L. Feretti , D. Dallacasa , F. Govoni , G. Giovannini , G. B. Taylor , U. Klein

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

The goal of this work is to constrain the strength and structure of the magnetic field associated with the environment of the radio source 3C 449, using observations of Faraday rotation, which we model with a structure function technique…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 D. Guidetti , R. A. Laing , M. Murgia , F. Govoni , L. Gregorini , P. Parma

We present a detailed examination of the relationship between the magnetic field structures and the variations in Faraday Rotation across PKS1246-410, a radio source in the Centaurus cluster of galaxies, using data from Taylor, Fabian and…

Astrophysics · Physics 2009-11-07 L. Rudnick , K. Blundell

A deep radio observation of the A2255 cluster of galaxies has been carried out at 1.4 GHz with the Very Large Array synthesis telescope. Thanks to the excellent (u,v) coverage and sensitivity achieved by our observation, the low brightness…

We present a Bayesian maximum likelihood analysis of Faraday rotation measure (RM) maps of extended radio sources to determine magnetic field power spectra in clusters of galaxies. Using this approach, it is possible to determine the…

Astrophysics · Physics 2009-08-11 Corina Vogt , Torsten A. Ensslin

To search for a signature of an intracluster magnetic field, we compare measurements of Faraday rotation of polarised extragalactic radio sources in the line of sight of galaxy clusters with those outside. We correlated a catalogue of 1383…

Cosmology and Nongalactic Astrophysics · Physics 2016-12-07 Hans Boehringer , Gayoung Chon , Philipp P. Kronberg

Diffuse synchrotron emission in the form of radio halos and radio relics probe the existence of relativistic electrons and magnetic fields in galaxy clusters. These nonthermal components are generated from the dissipation of kinetic energy…

Cosmology and Nongalactic Astrophysics · Physics 2024-09-24 Andrea Botteon

Faraday rotation of radio source polarization provides a measure of the integrated magnetic field along the observational lines of sight. We compare a new, large sample of Faraday rotation measures (RMs) of polarized extragalactic sources…

Astrophysics · Physics 2009-11-13 Yongzhong Xu , Philipp P. Kronberg , Salman Habib , Quentin W. Dufton

We employ an analytical model that incorporates both wavelength-dependent and wavelength-independent depolarization to describe radio polarimetric observations of polarization at $\lambda \lambda \lambda \, 3.5, 6.2, 20.5$ cm in M51 (NGC…

Astrophysics of Galaxies · Physics 2014-09-05 Carl Shneider , Marijke Haverkorn , Andrew Fletcher , Anvar Shukurov

Spectral index studies of halos, relics, and radio galaxies provide useful information on their origin and connection with merger processes. We present WSRT multi-wavelength observations of the galaxy cluster Abell 2255 at 25 cm, 85 cm, and…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 R. F. Pizzo , A. G. de Bruyn
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