6–10 Jul 2026
University of the Western Cape
Africa/Johannesburg timezone
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Early results of tests on the Simba-C simulation with varying initial conditions

7 Jul 2026, 11:20
20m
Lecture Hall C5 (University of the Western Cape)

Lecture Hall C5

University of the Western Cape

Oral Presentation Track D - Astrophysics & Space Science Astrophysics & Space Science

Speaker

Jaydon Durow

Description

The late time evolution of large scale structure (LSS) in our Universe is heavily influenced by early Universe physics. But typically we limit our tests to the $\Lambda$CDM model, which limits how we can examine what effect early time conditions have on the Universe and its evolution. Cosmological simulations, like the Simba-C simulation, are useful tools for modeling galaxy formation and cosmic filament morphology. This makes them perfect testing grounds for the effect variations of initial conditions will have on late time structures. We show some early results of these varied simulations. We varied the baryonic and dark matter densities, as well as the sigma 8 value and the spectral index and amplitude. Using CLASS (Cosmic Linear Anisotropy Solving System) to generate the initial power spectrum, and MUSIC (MUlti-Scale Initial Conditions) to generate the initial density field.

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Author

Co-authors

Prof. Amare Abebe (North West University) Dr David Figueruelo (University of the Basque Country) Dr Renier Hough (North West University)

Presentation materials