MG14 - Talk detail

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Abstract

Cosmological hydrodynamical simulations are now able to produce galaxies that are statistically very similar to observed galaxies in terms of the galaxy stellar mass function, colours of galaxies, and their clustering properties. They also reproduce the evolution of these properties rather well. The effects of the nature of the dark matter - cold versus warm - may have an impact on the small-scale structure of the Universe. The properties of the intergalactic medium - as observed in the Lyman-alpha forest, and the properties of faint satellites of more massive galaxies - could be used to distinguish cold from warm dark matter. We will present results from a suite of cosmological simulations that include both cold dark matter models, and sterile neutrino models. Comparing these we will discuss to what extent current data favour or disfavour particular models.

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