Research

My research focuses on the role of cosmic rays in galaxy evolution, with the goal of connecting theoretical models to observational data. Using magneto-hydrodynamical simulations that include cosmic rays, I investigate their transport processes and interactions with the interstellar medium and magnetic fields.

By modeling the resulting multi-wavelength emission, I aim to constrain cosmic ray physics through comparison with observations. I apply these methods to both idealized galaxy setups and cosmological simulations, linking synthetic observables to the physical processes that regulate star formation and shape galaxies.

Publications

A full ist of my first author and co-author publications can be found here.

Selected Publications

• Werhahn, M., et al. (2025, submitted)
  Steady-State or Not? The Evolution of Cosmic Ray Electron Spectra in Galaxies
  ADS link

• Werhahn, M., et al. (2025)
  Environment matters: stronger magnetic fields in satellite galaxies
  ADS link

• Werhahn, M., et al. (2023)
  Gamma-ray emission from spectrally resolved cosmic rays in galaxies
  ADS link

• Werhahn, M., et al. (2021a)
  Cosmic rays and non-thermal emission in simulated galaxies - I. Electron and proton spectra compared to Voyager-1 data
  ADS link

• Werhahn, M., et al. (2021b)
  Cosmic rays and non-thermal emission in simulated galaxies - II. γ-ray maps, spectra, and the far-infrared-γ-ray relation ADS link

• Werhahn, M., et al. (2021c)
  Cosmic rays and non-thermal emission in simulated galaxies - III. Probing cosmic-ray calorimetry with radio spectra and the FIR-radio correlation
  ADS link