Unravelling the origin of large-scale magnetic fields in galaxy clusters and beyond through Faraday Rotation Measures with the SKA - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Communication Dans Un Congrès Année : 2014

Unravelling the origin of large-scale magnetic fields in galaxy clusters and beyond through Faraday Rotation Measures with the SKA

F. Vazza
  • Fonction : Auteur
T. Akahori
  • Fonction : Auteur
E. Carretti
  • Fonction : Auteur
L. Feretti
  • Fonction : Auteur
C. Ferrari
G. Giovannini
F. Govoni
M. Murgia
V. Vacca
L. Rudnick
  • Fonction : Auteur

Résumé

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 models for galaxy clusters of different masses and in different stages of their evolution, and derive mock rotation measure observations of background radiogalaxies. According to our results, already in phase I, we will be able to infer the magnetic field properties in galaxy clusters as a function of the cluster mass, down to $10^{13}$ solar-masses. Moreover, using cosmological simulations to model the gas density, we have computed the expected rotation measure through shock-fronts that occur in the intra-cluster medium during cluster mergers. The enhancement in the rotation measure due to the density jump will permit to constraint the magnetic field strength and structure after the shock passage. SKA observations of polarised sources located behind galaxy clusters will answer several questions about the magnetic field strength and structure in galaxy clusters, and its evolution with cosmic time.
Fichier non déposé

Dates et versions

hal-03648712 , version 1 (21-04-2022)

Identifiants

Citer

A. Bonafede, F. Vazza, M. Brüggen, T. Akahori, E. Carretti, et al.. Unravelling the origin of large-scale magnetic fields in galaxy clusters and beyond through Faraday Rotation Measures with the SKA. Proceedings of Advancing Astrophysics with the Square Kilometre Array (AASKA14), Jun 2014, Giardini Naxos, Italy. ⟨hal-03648712⟩
12 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More