Dr. Shi Shao from Durham University will visit us on January 16, 2019. Dr. Shao has been working on local galaxies using EAGLE simulation. He also worked on warm dark matter simulations during his Ph.D. Below are the title and abstract of his talk.
Title: Revealing the nature of dark matter in the Local Group
Abstract: The standard cosmological model, the‘Λ cold dark matter’model (ΛCDM) is very successful in describing the formation and evolution of large-scale structure in the Universe. However, the standard model is being challenged by observations on small scales, such as those of our Local Group, where the nature and properties of dark matter are most clearly manifest. The Local Group is an association of galaxies that consists of our own Milky Way (MW), the neighbouring Andromeda, as well as hundreds of smaller dwarf galaxies. Its proximity and abundance of observational data offer an unmatched window into the physics of the Universe, such as understanding galaxy formation and evolution at the faint end and of one of the most compelling problems in physics, the nature of dark matter. In the next decade, we will witness an explosion in the number of dedicated surveys such as GAIA, WEAVE, 4MOST and LSST, which will allow us to probe galaxy formation and the underlying dark matter distribution to an even greater detail. In this talk, I will present my latest work based on the state-of-the-art numerical simulations. In particular, I will discuss what the orbits of the Milky Way (MW) satellites can tell us about the shape and orientation of the MW dark matter halo.