About Me
Ole Wittig
Master's student
ARI, Heidelberg
Hello! I am an astrophysicist and Master's student at ARI, Heidelberg University. My research focuses on cosmology, astrophysics, and computational methods with applications to galaxy formation and evolution. Currently I am working on galactic outflows and Lyman-Alpha Observables. Before, I did an internship at the LMU in Munich after graduating from Heidelberg University.
In my freetime I enjoy going hiking, doing sports and playing the drums.
Education
- MSc in Physics, 2024-ongoing
Heidelberg University - BSc in Physics, 2020-2024
Heidelberg University
Research Interests
- Galactic outflows and their modeling
- Galaxy formation and evolution
- Cosmological simulations
- Galaxy clusters and their stellar content
Research Projects
Modeling Galactic Outflows with Machine Learning
Designing a realistic model of galactic outflows with improved accuracy. Exploring parameter space using ML techniques to identify degeneracies and comparing results with analytical solutions.
Read more →Stellar Mass Fractions in Galaxy Clusters
Updated stellar mass fractions of SPT-selected galaxy clusters with new weak-lensing constraints. Implemented MCMC routines to fit scaling relations and discovered a flatter stellar-to-halo mass relation.
Read more →Tracing Baryonic Matter in TNG50 Simulations
Traced baryonic matter through cosmic time using Monte-Carlo tracer particles in the TNG50 simulation. Quantified the origin of gas forming present-day stars.
Read more →Publications & Talks
Publications
Wittig, O., Ramesh, R., Nelson, D. (2025). "Tracing the cosmological origin of gas fuelling in situ star formation in TNG50 galaxies." Astronomy & Astrophysics, 695, A121.
Invited Talks
Seminar on Extragalactic Astrophysics and Cosmology (October 2024)
University of Innsbruck
"Tracing the origin of gas fuelling in situ star formation."
Schools & Conferences
ESO Gruber Summer School (June 2025) - ESO Garching, Munich
Topics: Exoplanets, Transients, AGNs, Galaxy evolution, high-redshift universe. Hands-on sessions on using data of JWST, VLT, ALMA and more.
WE-Heraeus and NARIT Cosmology School 2025 (October 2025) - Chiang Mai, Thailand
Topics: Cosmology, galaxy formation, cosmological simulations, ΛCDM. Hands-on sessions on running cosmological simulations using Gadget-4.