Cosmology with the SZ spectrum: measuring the Universe's temperature with galaxy clusters
Abstract
The hot gas in clusters of galaxies creates a distinctive spectral distortion in the cosmic microwave background (CMB) via the Sunyaev-Zel'dovich (SZ) effect. The spectral signature of the SZ can be used to measure the CMB temperature at cluster redshift () and to constrain the monopole of the y-type spectral distortion of the CMB spectrum. In this work, we start showing the measurements of for a sample extracted from the Second Catalog of galaxy clusters produced by Planck (PSZ2) and containing 75 clusters selected from CHEX-MATE. Then we show the forecasts for future CMB experiments about the constraints on the monopole of the y-type spectral distortion of the CMB spectrum via the spectrum of the SZE.
Keywords
Cite
@article{arxiv.2111.03427,
title = {Cosmology with the SZ spectrum: measuring the Universe's temperature with galaxy clusters},
author = {Gemma Luzzi and Emanuele D'Angelo and Hervé Bourdin and Federico De Luca and Pasquale Mazzotta and Filippo Oppizzi and Gianluca Polenta},
journal= {arXiv preprint arXiv:2111.03427},
year = {2022}
}
Comments
To appear in the Proceedings of the International Conference entitled "mm Universe @ NIKA2", Rome (Italy), June 2021, EPJ Web of conferences