Key project 2: Galaxy Clusters as Geometry Probes, Dark-Matter Labs and Gravitational Telescopes – University of Copenhagen

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Key projects 2: Galaxy Clusters as Geometry Probes, Dark-Matter Labs and Gravitational Telescopes

Image: This image shows the galaxy cluster Abell 1689, with the mass distribution of the dark matter in the gravitational lens overlaid (in purple). Credit: NASA, ESA, E. Jullo (JPL/LAM), P. Natarajan (Yale) and J-P. Kneib (LAM).

Clusters of galaxies provide the opportunity to study the properties of dark matter and its link with ordinary matter.

When the dark-matter distribution is accurately measured it can be used to study not only the properties of the dark and ordinary matter distributions in the cluster, but also to test the cosmological world model through simple geometric measures, and to detect and analyse faint background galaxies that would otherwise be out of reach. The main aim of this project is to obtain a high-precision mass model of a galaxy cluster in order to look into the properties of dark matter and to use the mass model to address a range of cosmological issues.

More about ‘Cluster Ultra Deep Field' >>