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Euclid preparation: XI. Mean redshift determination from galaxy redshift probabilities for cosmic shear tomography
Euclid Collaboration, O. Ilbert, S. de la Torre +162
The analysis of weak gravitational lensing in wide-field imaging surveys is considered to be a major cosmological probe of dark energy. Our capacity to constrain the dark energy eq…
Euclid preparation: VII. Forecast validation for Euclid cosmological probes
Euclid Collaboration, A. Blanchard, S. Camera +151
The Euclid space telescope will measure the shapes and redshifts of galaxies to reconstruct the expansion history of the Universe and the growth of cosmic structures. Estimation of…
Non-linear contributions to angular power spectra
Mona Jalilvand, Basundhara Ghosh, Elisabetta Majerotto +3
Future galaxy clustering surveys will probe small scales where non-linearities become important. Since the number of modes accessible on intermediate to small scales is very high,…
A new estimator for gravitational lensing using galaxy and intensity mapping surveys
Mona Jalilvand, Elisabetta Majerotto, Camille Bonvin +4
We introduce the Galaxy Intensity Mapping cross-COrrelation estimator (GIMCO), which is a new tomographic estimator for the gravitational lensing potential, based on a combination…
Intensity mapping of the 21cm emission: lensing
Mona Jalilvand, Elisabetta Majerotto, Ruth Durrer +1
In this paper, we study lensing of 21cm intensity mapping (IM). Like in the cosmic microwave background (CMB), there is no first order lensing in intensity mapping. The first effec…
Cosmology and Fundamental Physics with the Euclid Satellite
Luca Amendola, Stephen Appleby, Anastasios Avgoustidis +69
Euclid is a European Space Agency medium class mission selected for launch in 2020 within the Cosmic Vision 2015 2025 program. The main goal of Euclid is to understand the origin o…
Combined constraints on deviations of dark energy from an ideal fluid from Euclid and Planck
Elisabetta Majerotto, Domenico Sapone, Bjoern Malte Schaefer
Cosmological fluids are commonly assumed to be distributed in a spatially homogeneous way, while their internal properties are described by a perfect fluid. As such, they influence…
Curvature vs Distances: testing the FLRW cosmology
Domenico Sapone, Elisabetta Majerotto, Savvas Nesseris
We test the FLRW cosmology by reconstructing in a model-independent way both the Hubble parameter and the comoving distance via the most recent Hubble and Supernovae…
Can dark energy viscosity be detected with the Euclid survey?
Domenico Sapone, Elisabetta Majerotto, Martin Kunz +1
Recent work has demonstrated that it is important to constrain the dynamics of cosmological perturbations, in addition to the evolution of the background, if we want to distinguish…
Cosmology and fundamental physics with the Euclid satellite
Luca Amendola, Stephen Appleby, David Bacon +60
Euclid is a European Space Agency medium class mission selected for launch in 2019 within the Cosmic Vision 2015-2025 programme. The main goal of Euclid is to understand the origin…
Probing deviations from General Relativity with the Euclid spectroscopic survey
Elisabetta Majerotto, Luigi Guzzo, Lado Samushia +10
We discuss the ability of the planned Euclid mission to detect deviations from General Relativity using its extensive redshift survey of more than 50 Million galaxies. Constraints…
Fingerprinting Dark Energy III: distinctive marks of viscosity
Domenico Sapone, Elisabetta Majerotto
The characterisation of dark energy is one of the primary goals in cosmology especially now that many new experiments are being planned with the aim of reaching a high sensitivity…
Statistical and systematic errors in redshift-space distortion measurements from large surveys
Davide Bianchi, Luigi Guzzo, Enzo Branchini +5
We investigate the impact of statistical and systematic errors on measurements of linear redshift-space distortions (RSD) in future cosmological surveys, analyzing large catalogues…
Euclid Definition Study Report
R. Laureijs, J. Amiaux, S. Arduini +216
Euclid is a space-based survey mission from the European Space Agency designed to understand the origin of the Universe's accelerating expansion. It will use cosmological probes to…
Designing a space-based galaxy redshift survey to probe dark energy
Yun Wang, Will Percival, Andrea Cimatti +13
A space-based galaxy redshift survey would have enormous power in constraining dark energy and testing general relativity, provided that its parameters are suitably optimized. We s…
Effects of cosmological model assumptions on galaxy redshift survey measurements
Lado Samushia, Will J. Percival, Luigi Guzzo +8
The clustering of galaxies observed in future redshift surveys will provide a wealth of cosmological information. Matching the signal at different redshifts constrains the dark ene…
Observational constraints on an interacting dark energy model
Jussi Valiviita, Roy Maartens, Elisabetta Majerotto
We use observations of cosmic microwave background anisotropies, supernova luminosities and the baryon acoustic oscillation signal in the galaxy distribution to constrain the cosmo…
Adiabatic initial conditions for perturbations in interacting dark energy models
Elisabetta Majerotto, Jussi Valiviita, Roy Maartens
We present a new systematic analysis of the early radiation era solution in an interacting dark energy model to find the adiabatic initial conditions for the Boltzmann integration.…