Oral Presentation

GalWeight-Derived SDSS Galaxy Cluster Catalog and Cosmological Constraints on the omega_m and sigma_8

Author(s): Mohamed Elhashash (Institute of Management and Information Technologies, Chiba University, Japan)

Presenter: Mohamed Elhashash (Institute of Management and Information Technologies, Chiba University)

Galaxy clusters, the most massive bound systems in the universe, are uniquely powerful astrophysical and cosmological probes. Astrophysically, galaxy clusters are interesting laboratories to investigate galaxy formation and evolution under the influence of extreme environments. Cosmologically, studying the cluster mass and correlation functions at different redshifts are powerful tools for constraining cosmological parameters. Identification of galaxy clusters and estimation of cluster masses are key challenges to accurately construct cluster catalogs for all dependent studies. In this presentation, I discuss the FoG-GalWeight toolkit utilized to create the GalWCat19 galaxy cluster catalog and its application of constraining the cosmological parameter. I also discuss the application of GalWCat19 to study the evolution of galaxies in clusters.