Cosmological Parameters from Observations of Galaxy Clusters

TL;DR

Galaxy cluster observations are vital for understanding cosmology, providing insights into dark matter and dark energy, with ongoing advancements in modeling and multi-wavelength data improving the precision of cosmological parameters.

Contribution

This review synthesizes current cosmological insights from galaxy cluster observations and emphasizes the importance of multi-wavelength data and rigorous statistical methods for future research.

Findings

Results support the standard cosmological model

Observations constrain dark matter and dark energy properties

Systematic error modeling is crucial for accurate results

Abstract

Studies of galaxy clusters have proved crucial in helping to establish the standard model of cosmology, with a universe dominated by dark matter and dark energy. A theoretical basis that describes clusters as massive, multi-component, quasi-equilibrium systems is growing in its capability to interpret multi-wavelength observations of expanding scope and sensitivity. We review current cosmological results, including contributions to fundamental physics, obtained from observations of galaxy clusters. These results are consistent with and complementary to those from other methods. We highlight several areas of opportunity for the next few years, and emphasize the need for accurate modeling of survey selection and sources of systematic error. Capitalizing on these opportunities will require a multi-wavelength approach and the application of rigorous statistical frameworks, utilizing the combined strengths of observers, simulators and theorists.