Heidelberg Joint Astronomical Colloquium

Speaker Steen Hansen
Title Why cosmological dark matter structures look the way they do

In this talk I will first present an overview of the observational evidence for dark matter.

I will then describe what the largest cosmological dark matter structures look like, according to numerical simulations, observations, and theory.

I will focus on the much discussed "density profiles", and the rather counter-intuitive "temperature-anisotropy" of the dark matter, which has only just been observed. The observation of this "temperature-anisotropy" demonstrates that dark matter behaves fundamentally different from normal baryonic particles.