The Third National Workshop on the SKA Project - The Italian Route to the SKAO Revolution

Session

Magnetism

Session 5

5 Oct 2021, 17:00

Virtual

54. Large-scale magnetic fields unveiled by LOFAR

Chiara Stuardi (Istituto Nazionale di Astrofisica (INAF))

05/10/2021, 17:00

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,...

23. MeerKAT and ASKAP synergies: the discovery of a depolarizing HI tail in the western lobe of Fornax A

Francesca Loi (Istituto Nazionale di Astrofisica (INAF))

05/10/2021, 17:20

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...

5. Spectral index of synchrotron emission: insights from the diffuse and magnetised interstellar medium

Marco Padovani (Istituto Nazionale di Astrofisica (INAF))

05/10/2021, 17:40

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...