Invited Presentation

Halo Concentration, Galaxy Red Fraction, and Gas Properties of Optically-defined Merging Clusters

Author(s): Nobuhiro Okabe

Presenter: Nobuhiro Okabe (Hiroshima Univ.)

We present multi-wavelength studies of optically-defined merging clusters, based on the Hyper Suprime-Cam Subaru Strategic Program. Luminous red galaxies, tracing cluster mass distributions, enable to identify cluster subhalos at various merging stages,
and thus make a homogeneous sample of cluster mergers, which is unbiased with respect to the merger boost of the intracluster medium (ICM).