| Issue |
EPJ Web Conf.
Volume 293, 2024
mm Universe 2023 - Observing the Universe at mm Wavelengths
|
|
|---|---|---|
| Article Number | 00015 | |
| Number of page(s) | 6 | |
| DOI | https://doi.org/10.1051/epjconf/202429300015 | |
| Published online | 28 March 2024 | |
https://doi.org/10.1051/epjconf/202429300015
Small-scale CMB cosmological information
1 Institut d’Astrophysique Spatiale, CNRS, Université Paris Saclay, Orsay, France
2 Department of Physics and McGill Space Institute, McGill University, Montreal, QC, Canada H3A 2T8
* e-mail: marian.douspis@ias.u-psud.fr
Published online: 28 March 2024
The small-scale CMB angular power spectrum contains many contaminants from secondary anisotropies created by large-scale structures. Although their contribution is taken into account in the analyses, their cosmological dependence is often ignored. We propose a new analysis of SPT data focusing on the cosmological contributions of the Sunyaev Zel’dovich effects (tSZ and kSZ). After modelling these two effects and building a power spectrum emulator, we show that using the cosmological information of the tSZ and kSZ in addition to that of the primordial CMB contained in the small-scale SPT data provides comparable constraints on the reionisation history to those of the large-scale data of Planck.
© The Authors, published by EDP Sciences, 2024
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