Speaker

Feven Markos Hunde

Center for Theoretical Physics of the Polish Academy of Sciences

Abstract

The cosmic web is the largest geometric structure in our universe, consisting of an intricate network of empty voids bounded by thin walls, elongated filaments, and dense nodes. Dark matter halos, which are formed due to gravitational instability, follow a hierarchical structure formation scenario and serve as one of the tracers of the cosmic web. These halos host smaller structures known as subhalos, which are also influenced by the cosmic web environment. The accurate estimation of dark matter subhalo abundance and properties in cosmic web environments is crucial for understanding the distribution of dark matter halos and plays a significant role in studying the physics of galaxy formation and evolution at small scales. While there is evidence that the characteristics of dark matter halos and the galaxies they contain vary across different cosmic web environments, the dependence of small-scale structure properties on their cosmic web environment requires further investigation. In this study, using a high-resolution N-body simulation, we investigate how the abundance of subhalos and their internal properties depend on the cosmic web environments. In this presentation, I will discuss our comprehensive results on the relationship between dark matter subhalo properties and cosmic web environments.

Scientific theme

Cosmic web, small scale structures, numerical simulations