Stockholm University and NORDITA host this week an international workshop on axions and dark matter. Axions are hypothetical particles proposed by Frank Wilczek who this year started his appointment as professor at Stockholm University.
Galaxy clusters occupy a central role in the ongoing efforts to understand some of the greatest questions in particle astrophysics and cosmology: the nature of Dark Matter and Dark Energy. Moreover, these huge mass concentrations serve as Nature’s own telescopes, capable of amplifying faint high-redshift sources that would otherwise be beyond our reach. At the same time, the use of galaxy clusters as probes for fundamental physics requires a good understanding of the state of the intra-cluster medium.