The intracluster magnetic field power spectrum in Abell 2255

2006/08/21 by F. Govoni, M. Murgia, L. Feretti +3 · 1 citation
Physics and Astronomy · #Abell 2744 #Astronomy and Astrophysical Research #Astrophysics #Brightest cluster galaxy #Cluster (spacecraft) #Computer science #Faraday cage #Faraday effect #Field strength #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy cluster #Intracluster medium #Magnetic field #Physics #Radio Astronomy Observations and Technology #Radio galaxy #Radio halo #astro-ph

paper · pdf · doi:10.1051/0004-6361:20065964

16 pages, 15 figures, accepted by A&A. For a version with high quality figures, see http://lucipher.ca.astro.it/~matteo/A2255/

arxiv created 2006/08/21 · openalex publication_date 2006/08/25 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Aims.The goal of this work is to constrain the strength and structure of the magnetic field in the nearby cluster of galaxies A2255. At radio wavelengths A2255 is characterized by the presence of a polarized radio halo at the cluster center, a relic source at the cluster periphery, and several embedded radio galaxies. The polarized radio emission from all these sources is modified by Faraday rotation as it traverses the magnetized intra-cluster medium. The distribution of Faraday rotation can be used to probe the magnetic field strength and topology in the cluster.

Citations

• The NRAO VLA Sky Survey
• A comparison of radio and X-ray morphologies of four clusters of galaxies containing radio halos
• Revised equipartition and minimum energy formula for magnetic field strength estimates from radio synchrotron observations
• Compressible turbulence in galaxy clusters: physics and stochastic particle re-acceleration
• Magnetic Field in Clusters of Galaxies

Cited by

• Cluster Merger Shock Constraints on Particle Acceleration and Nonthermal Pressure in the Intracluster Medium