Title :

Cluster magnetic fields through the study of polarized radio halos in the SKA era

Author(s) :

Govoni, F. [Auteur]
Murgia, M. [Auteur]
Xu, H. [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Li, H. [Auteur]
Laboratoire d'Informatique, de Modélisation et d'Optimisation des Systèmes [LIMOS]
Norman, M. [Auteur]
Feretti, L. [Auteur]
Giovannini, G. [Auteur]
Services généraux [SGDG]
Vacca, V. [Auteur]
Bernardi, G. [Auteur]
Laboratoire de Physique Nucléaire et de Hautes Énergies [LPNHE]
Bonafede, A. [Auteur]
Jacobs University [Bremen]
Brunetti, G. [Auteur]
Institut de Physique Nucléaire de Lyon [IPNL]
Carretti, E. [Auteur]
Colafrancesco, S. [Auteur]
University of the Witwatersrand [Johannesburg] [WITS]
Donnert, J. [Auteur]
Ferrari, C. [Auteur]
Joseph Louis LAGRANGE [LAGRANGE]
Gitti, M. [Auteur]
Iapichino, L. [Auteur]
Johnston-Hollitt, M. [Auteur]
Victoria University of Wellington
Pizzo, R. [Auteur]
Netherlands Institute for Radio Astronomy [ASTRON]
Rudnick, L. [Auteur]

Conference title :

Proceedings of Advancing Astrophysics with the Square Kilometre Array (AASKA14)

City :

Giardini Naxos

Country :

Italie

Start date of the conference :

2014-06-09

HAL domain(s) :

Planète et Univers [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO]
Planète et Univers [physics]/Astrophysique [astro-ph]/Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]

English abstract : [en]

Galaxy clusters are unique laboratories to investigate turbulent fluid motions and large scale magnetic fields. Synchrotron radio halos at the center of merging galaxy clusters provide the most spectacular and direct ...
Show more >Galaxy clusters are unique laboratories to investigate turbulent fluid motions and large scale magnetic fields. Synchrotron radio halos at the center of merging galaxy clusters provide the most spectacular and direct evidence of the presence of relativistic particles and magnetic fields associated with the intracluster medium. The study of polarized emission from radio halos is extremely important to constrain the properties of intracluster magnetic fields and the physics of the acceleration and transport of the relativistic particles. However, detecting this polarized signal is a very hard task with the current radio facilities.We use cosmological magneto-hydrodynamical simulations to predict the expected polarized surface brightness of radio halos at 1.4 GHz. We compare these expectations with the sensitivity and the resolution reachable with the SKA1. This allows us to evaluate the potential for studying intracluster magnetic fields in the surveys planned for SKA1.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL

Submission date :

2022-04-22T03:21:17Z