Spectral properties of magnetic fields in galaxy clusters
Paola Dominguez-Fernandez (University of Hamburg)
Tuesday 19/03/2019 @ 14:00, Sala IV piano Battiferro
We investigate the evolution of magnetic fields in galaxy clusters starting from constant primordial fields using highly resolved (4 kpc) cosmological MHD simulations. The magnetic fields in our sample exhibit amplification via a small-scale dynamo and compression during structure formation. In particular, we study how the spectral properties of magnetic fields are affected by mergers, and we relate the measured magnetic energy spectra to the dynamical evolution of the intracluster medium. We discuss the implications of these findings in the interpretation of future radio observations of galaxy clusters.