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19932026
Showing 2023 · astro-ph.COShow all

9 papers · 2 filters

astro-ph.CO2023★ 13 cited

Euclid preparation. Modelling spectroscopic clustering on mildly nonlinear scales in beyond-CDM models

Euclid Collaboration, B. Bose, P. Carrilho +229

We investigate the approximations needed to efficiently predict the large-scale clustering of matter and dark matter halos in beyond-CDM scenarios. We examine the normal branch…

astro-ph.CO2023★ 8 cited

Euclid preparation. LII. Forecast impact of super-sample covariance on 3x2pt analysis with Euclid

Euclid Collaboration, D. Sciotti, S. Gouyou Beauchamps +221

Deviations from Gaussianity in the distribution of the fields probed by large-scale structure surveys generate additional terms in the data covariance matrix, increasing the uncert…

astro-ph.CO2023★ 27 cited

Euclid: The search for primordial features

M. Ballardini, Y. Akrami, F. Finelli +126

Primordial features, in particular oscillatory signals, imprinted in the primordial power spectrum of density perturbations represent a clear window of opportunity for detecting ne…

astro-ph.CO2023★ 11 cited

Fast and effortless computation of profile likelihoods using CONNECT

Andreas Nygaard, Emil Brinch Holm, Steen Hannestad +1

The frequentist method of profile likelihoods has recently received renewed attention in the field of cosmology. This is because the results of inferences based on the latter may d…

astro-ph.CO2023★ 2 cited

Euclid: Constraints on f(R) cosmologies from the spectroscopic and photometric primary probes

S. Casas, V. F. Cardone, D. Sapone +126

will provide a powerful compilation of data including spectroscopic redshifts, the angular clustering of galaxies, weak lensing cosmic shear, and the cross-correl…

astro-ph.CO2023★ 17 cited

Euclid: Constraining linearly scale-independent modifications of gravity with the spectroscopic and photometric primary probes

N. Frusciante, F. Pace, V. F. Cardone +127

The future Euclid space satellite mission will offer an invaluable opportunity to constrain modifications to Einstein's general relativity at cosmic scales. We focus on modified gr…