Physical Cosmology

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Physical Cosmology Group

                                                                                                                        Abell 2218 (Credit: NASA Images)


We are located at the University Observatory Munich (USM). We work on the interface between theoretical and observational cosmology. Our main research interest is in confronting modern cosmological theories with observations. Here we have in particular a strong research program in exploiting galaxy clusters and cosmic voids, but also in more general probes of the large-scale structure and the cosmic microwave back ground. One of our main motivations is to understand the nature of the cosmic acceleration in the Universe. Here we try to constrain theoretical models from standard dark energy, coupled scalar fields to theories which extend Einstein's gravity at large distances. In order to achieve this goal we use analytical and numerical methods, such as N-body simulations of the structure formation process, state of the art statistical analysis tools and modern Bayesian techniques. Furthermore we have a strong research program in machine learning applications in astrophysics, but also apply these methods in medical physics and string theory.

We are involved in the following national and international collaborations: The Dark Energy Survey DES, The Euclid satellite mission of ESA, the Hobby-Eberly Telescope Dark Energy Experiment  HETDEX, the Low Frequency Array LOFAR, ESA's Planck satellite mission, the eRosita x-ray satellite mission, the Square Kilometer Array SKA and the LiteBird satellite mission.

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.

Recent Papers by Group Members

Dark energy survey internal consistency tests of the joint cosmological probes analysis with posterior predictive distributions, Doux, C. et al.,Monthly Notices of the Royal Astronomical Society, 503, 2688, (2021)

Consistency of cosmic shear analyses in harmonic and real space, Doux, C. et al.,Monthly Notices of the Royal Astronomical Society, 503, 3796, (2021)

Volume statistics as a probe of large-scale structure, Chan, Kwan Chuen et al.,Physical Review D, 103, 043502, (2021)

Dark Energy Survey Year 1 results: the lensing imprint of cosmic voids on the cosmic microwave background, Vielzeuf, P. et al.,Monthly Notices of the Royal Astronomical Society, 500, 464, (2021)

Dark Energy Survey year 1 results: the relationship between mass and light around cosmic voids, Fang, Y. et al.,Monthly Notices of the Royal Astronomical Society, 490, 3573, (2019)

On the relative bias of void tracers in the Dark Energy Survey, Pollina, G. et al.,Monthly Notices of the Royal Astronomical Society, 487, 2836, (2019)

The Dark Energy Survey Image Processing Pipeline, Morganson, E. et al.,Publications of the Astronomical Society of the Pacific, 130, 074501, (2018)

Lattice Simulations of Inflation, Caravano, Angelo et al.,arXiv:2102.06378

Combining cosmological and local bounds on bimetric theory, Caravano, Angelo et al.,arXiv:2101.08791

On model selection in cosmology, Kerscher, Martin et al.,SciPost Physics Lecture Notes, 9, , (2019)

The bias of cosmic voids in the presence of massive neutrinos, Schuster, Nico et al.,Journal of Cosmology and Astroparticle Physics, 2019, 055, (2019)