Galaxy cluster observed in multiple wavelengths

Physical Cosmology Group

We connect theory and observation to answer big questions—from cosmic structure to dark energy—and we teach the next generation to do the same.

What we work on

We explore the Universe through the synergy of theory and observation. Our team builds and tests cosmological models using data from leading international surveys. We focus on galaxy clusters and cosmic voids, large‑scale structure, and the cosmic microwave background. To push the frontier, we develop analytical models, run numerical simulations, and apply modern statistical and Bayesian methods. We also pioneer machine learning for astrophysics, with spillovers into medical physics and string theory.

Galaxy clusters & cosmic voids
Large‑scale structure & CMB
Simulations & statistical inference
Machine learning for astrophysics
Dark energy & modified gravity

Our Collaborations

We work together with other groups at the Max Planck institutes. Among others: OPINAS and High Energy Astrophysics groups at MPE, the Cosmology research group at MPA, as well as with members of other groups at the Excellence Cluster and groups at MPP.