A Multi-Probe Analysis of the 3-D Shapes and Non-Thermal Pressure in the XMM-Heritage Galaxy Clusters

The CHEX-MATE project is a 3 Msec XMM-Heritage program targeting a Planck-SZ–selected sample of 118 galaxy clusters. These clusters represent a well-defined population in the local universe and span the highest-mass regime, making them ideal laboratories for precision cluster astrophysics. 

Our work focuses on developing and applying a multi-probe, three-dimensional triaxial analysis that incorporates Sunyaev–Zel'dovich (SZ) data, X-ray observations, and weak-lensing mass measurements. This approach enables robust constraints on the intrinsic 3D shapes of galaxy clusters and quantifies the non-thermal pressure support in the intracluster medium. The use of a clean, well-characterized sample ensures that the results can be used for both astrophysical insight and cosmological applications.

Related Publications

• CHEX-MATE: CLUster Multi-Probes in Three Dimensions (CLUMP-3D), II. Combined Gas and Dark Matter Analysis from X-ray, SZE, and WL [arXiv]

Gavidia, A., Kim, J., Sayers, J., et al., submitted to A&A.

• CHEX-MATE: CLUster Multi-Probes in Three Dimensions (CLUMP-3D), I. Gas Analysis Method using X-ray and Sunyaev–Zel’dovich Effect Data [ADS] [arXiv]

Kim, J., Sayers, J., Sereno, M., et al., 2024, A&A, 686, A97