Mapping the gas thermodynamic properties of the massive cluster merger MOO J1142+1527 at z = 1.2

F Ruppin ,O Bourrion ,F Kéruzoré ,R Adam ,C Romero ,P André ,B Comis ,Peter Eisenhardt ,Anthony H Gonzalez ,H Aussel ,N Ponthieu ,A Beelen ,E F C Driessen ,A Gómez ,A Benoı̂t ,A Monfardini ,J F Macías-Pérez ,A Bideaud ,F.‐X Désert ,S Shu ,Emily Moravec ,I Bartalucci ,M Mcdonald ,É Pointecouteau ,Bandon Decker ,J F Lestrade ,G Lagache ,Peter A R Ade ,Philip Daniel Mauskopf ,S Leclercq ,A Sievers ,M Brodwin ,K Schuster ,V Revéret ,L Perotto ,Daniel Stern ,C Tucker ,H Roussel ,M W Bautz ,S A Stanford ,G W Pratt ,S Doyle ,G Pisano ,M Calvo ,M Arnaud ,M De Petris ,A Ritacco ,B Ladjelate ,C Krämer ,F Mayet ,J Goupy ,A Catalano ,A Andrianasolo ,R Zylka

doi:10.1051/epjconf/202022800026

Abstract

We present the results of the analysis of the very massive cluster MOO J1142+1527 at a redshift z = 1.2 based on high angular resolution NIKA2 Sunyaev-Zel’dovich (SZ) andChandraX-ray data. This multi-wavelength analysis enables us to estimate the shape of the temperature profile with unprecedented precision at this redshift and to obtain a map of the gas entropy distribution averaged along the line of sight. The comparison between the cluster morphological properties observed in the NIKA2 andChandramaps together with the analysis of the entropy map allows us to conclude that MOOJ1142+1527 is an on-going merger hosting a cool-core at the position of the X-ray peak. This work demonstrates how the addition of spatially-resolved SZ observations to low signal-to-noise X-ray data can bring valuable insights on the intracluster medium thermodynamic properties atz>1.

Highlights

The analysis of the evolution of the gas thermodynamic properties with the mass and redshift of galaxy clusters enables the characterization of the processes behind cluster growth and the underlying cosmology in which these processes take place
The intracluster medium (ICM) thermodynamic properties may have significantly evolved since z∼2
It is essential to extend our knowledge of the ICM properties at redshifts higher than 1

Summary

Introduction

The analysis of the evolution of the gas thermodynamic properties with the mass and redshift of galaxy clusters enables the characterization of the processes behind cluster growth and the underlying cosmology in which these processes take place. We present a multi-wavelength analysis of the MaDCoWS cluster MOO J1142+1527 at z = 1.19 combining high angular resolution SZ data obtained by the NIKA2 camera at the Institut de Radioastronomie Millimétrique (IRAM) 30-m telescope [5] and X-ray data from Chandra. This joint analysis allows us to estimate the radial distributions of all thermodynamic properties and to produce maps of their average values along the line of sight

NIKA2 SZ observations

Chandra X-ray observations

ICM thermodynamic properties from a multi-probe analysis

Conclusions