Background Faraday-rotation studies have proven to be excellent tools for the detection and the study of large-scale magnetic fields. As an SKA pathfinder, LOFAR is exploring the low-frequency regime, where polarization observations are crucial to unveil the weak magnetic field outside galaxy clusters. As a uniform grid of Faraday-rotation measures (i.e., radio galaxies) is becoming a reality,...
The MeerKAT Fornax survey (MFS, P.I. Paolo Serra) will observe the galaxy cluster Fornax including the in-falling group of Fornax A. This project has two primary goals: to study the evolution of galaxies throughout the associated HI emission and to determine the intracluster magnetic field thanks to the polarization properties of cluster-embedded and background radio sources.
In the context...
The interpretation of Galactic synchrotron observations is complicated by the degeneracy between the strength of the magnetic field perpendicular to the line of sight (LOS), $B_\perp$, and the cosmic-ray electron (CRe) spectrum. Depending on the observing frequency, an energy-independent spectral energy slope $s$ for the CRe spectrum is usually assumed: $s=-2$ at frequencies below $\simeq$400...
