CHEX-MATE: towards a consistent universal pressure profile and cluster mass reconstruction

Fuente: arXiv

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Bibliographic Details
Main Authors:	Muñoz-Echeverría, M., Pointecouteau, E., Pratt, G. W., Macías-Pérez, J. -F., Douspis, M., Salvati, L., Bartalucci, I., Bourdin, H., Clerc, N., De Luca, F., De Petris, M., Donahue, M., Dupourqué, S., Eckert, D., Ettori, S., Gaspari, M., Gastaldello, F., Gitti, M., Gorce, A., Ilić, S., Kay, S. T., Kim, J., Lovisari, L., Maughan, B. J., Mazzotta, P., McBride, L., Melin, J. -B., Oppizzi, F., Rasia, E., Rossetti, M., Saxena, H., Sayers, J., Sereno, M., Tristram, M.
Format:	Preprint
Published:	2025
Subjects:	Cosmology and Nongalactic Astrophysics
Online Access:	Acceder al recurso
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author	Muñoz-Echeverría, M. Pointecouteau, E. Pratt, G. W. Macías-Pérez, J. -F. Douspis, M. Salvati, L. Bartalucci, I. Bourdin, H. Clerc, N. De Luca, F. De Petris, M. Donahue, M. Dupourqué, S. Eckert, D. Ettori, S. Gaspari, M. Gastaldello, F. Gitti, M. Gorce, A. Ilić, S. Kay, S. T. Kim, J. Lovisari, L. Maughan, B. J. Mazzotta, P. McBride, L. Melin, J. -B. Oppizzi, F. Rasia, E. Rossetti, M. Saxena, H. Sayers, J. Sereno, M. Tristram, M.
author_facet	Muñoz-Echeverría, M. Pointecouteau, E. Pratt, G. W. Macías-Pérez, J. -F. Douspis, M. Salvati, L. Bartalucci, I. Bourdin, H. Clerc, N. De Luca, F. De Petris, M. Donahue, M. Dupourqué, S. Eckert, D. Ettori, S. Gaspari, M. Gastaldello, F. Gitti, M. Gorce, A. Ilić, S. Kay, S. T. Kim, J. Lovisari, L. Maughan, B. J. Mazzotta, P. McBride, L. Melin, J. -B. Oppizzi, F. Rasia, E. Rossetti, M. Saxena, H. Sayers, J. Sereno, M. Tristram, M.
contents	In a self-similar paradigm of structure formation, the thermal pressure of the hot intra-cluster gas follows a universal distribution once the profile of each cluster is normalised based on the proper mass and redshift dependencies. The reconstruction of such a universal pressure profile requires an individual estimate of the mass of each cluster. In this context, we present a method to jointly fit, for the first time, the universal pressure profile and individual cluster $M_{500}$ masses over a sample of galaxy clusters, properly accounting for correlations between the profile shape and amplitude, and masses scaling the individual profiles. We demonstrate the power of the method and show that a consistent exploitation of the universal pressure profile and cluster mass estimates when modelling the thermal pressure in clusters is necessary to avoid biases. In particular, the method, informed by a cluster mass scale, outputs individual cluster masses with same accuracy and better precision than input masses. Using data from the «Cluster HEritage project with XMM-Newton: Mass Assembly and Thermodynamics at the Endpoint of structure formation», we investigate a sample of $\sim 25$ galaxy clusters spanning mass and redshift ranges of $2 \lesssim M_{500}/10^{14} \; \mathrm{M}_{\odot} \lesssim 14$ and $0.07 < z < 0.6$.
format	Preprint
id	arxiv_https___arxiv_org_abs_2510_18578
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	CHEX-MATE: towards a consistent universal pressure profile and cluster mass reconstruction Muñoz-Echeverría, M. Pointecouteau, E. Pratt, G. W. Macías-Pérez, J. -F. Douspis, M. Salvati, L. Bartalucci, I. Bourdin, H. Clerc, N. De Luca, F. De Petris, M. Donahue, M. Dupourqué, S. Eckert, D. Ettori, S. Gaspari, M. Gastaldello, F. Gitti, M. Gorce, A. Ilić, S. Kay, S. T. Kim, J. Lovisari, L. Maughan, B. J. Mazzotta, P. McBride, L. Melin, J. -B. Oppizzi, F. Rasia, E. Rossetti, M. Saxena, H. Sayers, J. Sereno, M. Tristram, M. Cosmology and Nongalactic Astrophysics In a self-similar paradigm of structure formation, the thermal pressure of the hot intra-cluster gas follows a universal distribution once the profile of each cluster is normalised based on the proper mass and redshift dependencies. The reconstruction of such a universal pressure profile requires an individual estimate of the mass of each cluster. In this context, we present a method to jointly fit, for the first time, the universal pressure profile and individual cluster $M_{500}$ masses over a sample of galaxy clusters, properly accounting for correlations between the profile shape and amplitude, and masses scaling the individual profiles. We demonstrate the power of the method and show that a consistent exploitation of the universal pressure profile and cluster mass estimates when modelling the thermal pressure in clusters is necessary to avoid biases. In particular, the method, informed by a cluster mass scale, outputs individual cluster masses with same accuracy and better precision than input masses. Using data from the «Cluster HEritage project with XMM-Newton: Mass Assembly and Thermodynamics at the Endpoint of structure formation», we investigate a sample of $\sim 25$ galaxy clusters spanning mass and redshift ranges of $2 \lesssim M_{500}/10^{14} \; \mathrm{M}_{\odot} \lesssim 14$ and $0.07 < z < 0.6$.
title	CHEX-MATE: towards a consistent universal pressure profile and cluster mass reconstruction
topic	Cosmology and Nongalactic Astrophysics
url	https://arxiv.org/abs/2510.18578