Tag Archives: University of Tasmania

Cosmic Voids: What’s in there?

The Universe on its largest scales (i.e. scales of billion of light years) has the form of a web. The cosmic web permeates the entire Universe. On these cosmic scales matter is distributed along filaments. The nodes of the cosmic web (where the filaments cross) are occupied by clusters and groups of galaxies. In one such place our own galaxy resides. Cosmic voids are places between filaments. These are vast, seemingly empty regions, almost devoid of galaxies. Cosmic voids could harbour hundreds of thousands of galaxies but we only observe a few galaxies inside cosmic voids.
I will present the current state of knowledge about the cosmic voids. I will also discuss how in the future we will investigate these pristine environments to learn more about the nature of dark matter.

Krzysztof Bolejko obtained his PhD in 2007 in Poland. Before joining the University of Tasmania he held the Gruber Fellowship at the University of Melbourne, Fulbright Fellowship at the University of Arizona, Curie Fellowship at University of Oxford, and an ARC Future Fellowship at the University of Sydney. His field of expertise is theoretical cosmology. He is interested in the evolution of cosmic structures, especially cosmic voids. In his work he studies the properties of dark matter by investigating its impact on the evolution of structures and light propagation. Krzysztof is a Fellow of the Astronomical Society of Australia and also a Fellow of the Higher Education Academy.