I focus on understanding the connection between large-scale structure and galaxy evolution by means of hydrodynamical simulations.
The large-scale environment amongst others determines the angular momentum evolution of haloes and their galaxies as well as the alignment of neighbouring galaxies, which is a major source of bias for weak lensing studies. On the other hand galaxy formation is not a one way process. Highly energetic feedback events drive large-scale outflows which impact the state of the diffuse gas on the largest scales. The impact is reflected in the Lyman-alpha absorption statistics of the cosmic gas, and has to be precisely studied in order to use the Lyman-alpha forest as a precision probe for the dark energy equation of state, for the upper limit on neutrino masses, or for the temperature of dark matter. Furthermore, Lyman-alpha forest statistics can be used as an independent way of constraining feedback models employed in galaxy formation simulations.
To quantify these effects and understand their physical origin, I use the Illustris and IllustrisTNG simulations and also perform dedicated simulations using the moving-mesh code AREPO. I contribute to the development of AREPO, and am furthermore interested in HPC.
If you want to know more & are interested in those topics - get in touch!
PhD in computational astrophysics, Heidelberg University (2018)
‘The role of feedback on galactic and extra-galactic scales’, supervised by Volker Springel
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