Cosmic ray transport in galaxy clusters: implications for radio halos, gamma-ray signatures, and cool core heating

Understand

We investigate the interplay of cosmic ray (CR) propagation and advection in galaxy clusters.

• Propagation in form of CR diffusion and streaming tends to drive the CR radial profiles towards being flat, with equal CR number density everywhere.
• Advection of CR by the turbulent gas motions tends to produce centrally enhanced profiles.
• We assume that the CR streaming velocity is of the order of the sound velocity.