About this Research Topic
The subject of our Research Topic is clusters of galaxies. Galaxy clusters, the most massive bound objects in the universe, thus their formation and evolution through cosmic time are sensitive to the underlying cosmological model. Clusters also provide unique laboratories to study matter in extreme conditions. Our current standard cosmological model, the dark energy and cold dark matter dominated the LCDM model, is based on four well-established methods using: the fluctuations in the cosmic microwave background; the redshift distribution of Type Ia supernovae; baryonic acoustic oscillations; and the statistical distribution of clusters of galaxies. These independent methods provide consistent and similarly tight constraints on cosmological parameters. In the era of precision cosmology, when we aim to derive the cosmological parameters with percent precision and constrain extended LCDM models, methods based on galaxy clusters can stay competitive only if we understand and model the statistical distribution of clusters and cluster physics more accurately.
Our Research Topic on clusters of galaxies will contain research articles and reviews, and
addresses the following topics:
1) total mass distribution in clusters: gravitational lensing
2) the distribution and properties of the intracluster gas: X-ray and the Sunyaev-Zel’dovich observations
3) the distribution and properties of galaxies within clusters: multi-frequency observations of galaxies
4) formation and evolution of galaxy clusters: N-body/hydrodynamical simulations including effects of baryons and non-gravitational physical processes
5) Nature of dark matter: merging clusters of galaxies.
Keywords: galaxy clusters, intracluster gas, evolution of galaxies, LCDM model
Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.