Mapping the intracluster medium temperature in the era of NIKA2 and MUSTANG-2

TL;DR

This paper demonstrates how high-resolution Sunyaev-Zel'dovich observations combined with X-ray data can map the temperature of the intracluster medium in high-redshift galaxy clusters, advancing understanding of cluster dynamics.

Contribution

It introduces a joint analysis method using NIKA2 and MUSTANG-2 SZ data with Chandra X-ray observations to map ICM temperature at high redshift, highlighting its potential for future studies.

Findings

Preliminary temperature maps of high-redshift galaxy clusters.

Detection of relativistic SZ spectrum corrections in a cluster at z=0.45.

Demonstrates the role of high-resolution SZ in studying ICM dynamics.

Abstract

We present preliminary results from an on-going program that aims at mapping the intracluster medium (ICM) temperature of high redshift galaxy clusters from the MaDCoWS sample using a joint analysis of shallow X-ray data obtained by $Chandra$ and high angular resolution Sunyaev-Zel'dovich (SZ) observations realized with the NIKA2 and MUSTANG-2 cameras. We also present preliminary results from an on-going Open Time program within the NIKA2 collaboration that aims at mapping the ICM temperature of a galaxy cluster at $z=0.45$ from the resolved detection of the relativistic corrections to the SZ spectrum. These studies demonstrate how high angular resolution SZ observations will play a major role in the coming decade to push the investigation of ICM dynamics and non-gravitational processes to high redshift before the next generation X-ray observatories come into play.