• Theoretische Astrophysik

Theoretical Astrophysics Group

In our group, we use high performance computing facilities to unravel the mysteries of the Universe. Due to the simulation of binary neutron star systems, we are able to constrain the behavior of matter at supranuclear densities and to estimate the expansion rate of the Universe. Our simulations are the fundament to develop new models to describe the gravitational wave signals released during the coalescence of compact binaries and to model electromagnetic signatures created during and after the collision of ultracompact neutron stars. 

Our group works closely together with the Max Planck Institute for Gravitational Physics where Dietrich is leading an independent Max Planck Fellow group

Binary Neutron Star Merger Simulation

Numerical relativity simulation of the last few milliseconds of two inspiraling and merging neutron stars. Higher densities are shown in blue, lower densities are shown in cyan. The final black hole is shown in gray. 

Credits: - T. Dietrich (University of Potsdam), S. Ossokine, H. Pfeiffer, A. Buonanno (Max Planck Institute for Gravitational Physics)


17th of June 2022

Work with us

The Theoretical Astrophysics group looks for a new PhD student for the study of black hole - neutron star systems. Apply now!


9th of June 2022

Nature - New insights into neutron stars matter

newest publication "Constraining neutron-star matter with microscopic and macroscopic collisions" is mentioned also at University of Potsdam webpage.


12th of April 2022

Fascinating Universe – Humboldt Fellow Anuradha Samajdar on Analysis of Gravitational Waves

Since January 2022 Dr. Anuradha Samajdar has been a Humboldt Fellow in the Theoretical Astrophysics research group at the Institute of Physics and Astronomy. Read more...

25th of March 2022

33 million CPU hours

The Theoretical Astrophysics group obtains new computational resources at the HLRN Supercomputers of about 33 million CPUhs, worth 1.25 Million Euro.

9th of September 2021


Dietrich elected to DPG Advisory Board for the Gravitation and Relativity Association.

29th of July 2021

Interview with mdr Radio

about "New ripple in the fabric of spacetime: discovery of a new type of gravitational wave"  (only in german).

1st of July 2021

Plans for the Einstein Telescope reach the next level

Einstein Telescope approved for ESFRIRoadmap 2021 .