Title: Do we need to move beyond Cold Dark Matter?
Speaker:Prof. Andrea Maccio’ (NYU, Abu Dhabi, United Arab Emirates)
Abstract: Our current understanding of galaxy formation is based on the presence of an elusive matter component: the Cold Dark Matter (CDM). This simple model has ben challenged many times in the past decade, mainly by galaxy observations on small scales: from the abundance of satellites, to the distribution of dark matter within galaxies, and more recently by the discovery of galaxies "without" dark matter. In my talk I will first revise all these claims with the help of cosmological numerical simulations of galaxy formation from the NIHAO project. I will then discuss whether there is indeed an observationally motivated need to abandon Cold Dark Matter and move beyond such a simple model.
2018 -2019 - Università degli studi di Tor Vergata - Dipartimento di Fisica