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Mohammadreza (Reza) Ayromlou
Bonn, Germany Persian · English · German
Argelander Fellow · University of Bonn

Mohammadreza (Reza) Ayromlou

I am an astrophysicist and computational scientist, currently the Independent Argelander Fellow at the University of Bonn, where I study how galaxies form and evolve — and how the physical processes behind that evolution shape the large-scale structure of the Universe.

In practice, I build theoretical models of galaxy formation, implement them in cosmological simulations and semi-analytical models, and test their predictions against observational data. A recurring theme of my work is how physical processes reshape the distribution and dynamics of baryonic matter relative to the dark matter, which evolves under gravity alone. In more technical terms, I develop interpretable, scalable, and predictive models for high-dimensional physical systems — combining analytical theory and numerical simulations with high-performance computing (HPC), machine learning, simulation-based inference, and GPU-accelerated scientific computing.

I received the 2023 Patzer Prize for introducing the Closure Radius, a characteristic scale that quantifies where ordinary matter displaced from its host dark matter halo becomes enclosed again. I am also a main developer and PI of several numerical simulation projects that connect theoretical models, computational methods, and cosmological big data.

I live in Bonn with my wife, and speak Persian, English, and German.

How I work

I describe my work as the intersection of theory, computation, and observation — with the goal of understanding the fundamental processes that govern the Universe.

Theory

Developing theoretical models of how galaxies and cosmic structures form and evolve.

Computation

Implementing them in cosmological simulations and semi-analytical models on HPC systems.

Observation

Testing the results against observational data, and letting what we see guide the next model.

Path

  1. Argelander Fellow

    Current

    University of Bonn

  2. Postdoctoral Researcher

    Center for Astronomy, Heidelberg University

  3. Bridging Postdoc

    Max Planck Institute for Astrophysics (MPA)

  4. PhD

    March 2021

    MPA & Ludwig-Maximilians-Universität München

    with Guinevere Kauffmann and Simon White