Euclid preparation: XV. Forecasting cosmological constraints for the Euclid and CMB joint analysis

0567325 - FZÚ 2023 RIV FR eng J - Journal Article
Ilić, Stephane - Aghanim, N. - Baccigalupi, C. … Total 180 authors
Euclid preparation: XV. Forecasting cosmological constraints for the Euclid and CMB joint analysis.
Astronomy & Astrophysics. Roč. 657, Jan (2022), č. článku A91. ISSN 0004-6361. E-ISSN 1432-0746
EU Projects: European Commission(XE) 617656 - THEMODS
Institutional support: RVO:68378271
Keywords : large-scale structure of Universe * cosmic background radiation * surveys * methods: statistical
OECD category: Particles and field physics
Impact factor: 6.5, year: 2022
Method of publishing: Open access

The combination and cross-correlation of the upcoming Euclid data with cosmic microwave background (CMB) measurements is a source of great expectation since it will provide the largest lever arm of epochs, ranging from recombination to structure formation across the entire past light cone. In this work, we present forecasts for the joint analysis of Euclid and CMB data on the cosmological parameters of the standard cosmological model and some of its extensions. This work expands and complements the recently published forecasts based on Euclid-specific probes, namely galaxy clustering, weak lensing, and their cross-correlation. With some assumptions on the specifications of current and future CMB experiments, the predicted constraints are obtained from both a standard Fisher formalism and a posterior-fitting approach based on actual CMB data.
Permanent Link: https://hdl.handle.net/11104/0338588