The impact of cosmic rays on the interstellar medium and galactic outflows of Milky Way analogues

Understand

During the last decade, cosmological simulations have managed to reproduce realistic and morphologically diverse galaxies, spanning the Hubble sequence.

• Central to this success was a phenomenological calibration of the few included feedback processes, whilst glossing over higher complexity baryonic physics.
• This approach diminishes the predictive power of such simulations, preventing to further our understanding of galaxy formation.
• To tackle this fundamental issue, we investigate the impact of cosmic rays (CRs) and magnetic fields on the interstellar medium (ISM) and the launching of outflows in a cosmological zoom-in simulation of a Milky Way-like galaxy.