In this paper we introduce the `redshift fluctuation' as a gauge-invariant cosmological observable and give its fully relativistic expression at first order in cosmological perturbation theory. We show that this corresponds effectively to number counts with a radial window function with vanishing mean which therefore resolve smaller scale radial modes than standard number counts. In a detailed analysis of the angular power spectrum of this new variable, we study the relevance of different relativistic contributions, and how it differs from the conventional observable galaxy number count fluctuations. In order to investigate its utility for future spectroscopic surveys, we perform Fisher forecasts for a Euclid-like and an SKAII-like configur...
This paper aims to connect the theory of relativistic cosmology number counts with the astronomical ...
International audienceContext: The galaxy number counts has been traditionally used to test models o...
We present the galaxy number overdensity up to second order in redshift space on cosmological scales...
This thesis aims to explore and emphasise on the significant relativistic contributions to observabl...
International audienceIn the near future, cosmology will enter the wide and deep galaxy survey era, ...
We report the correlation analysis of various redshift surveys which shows that the available data a...
We estimate the sensitivity of future galaxy surveys to cosmological parameters, using the redshift ...
We show that various milestones of high-redshift galaxy formation, such as the formation of the firs...
Context. The galaxy number counts has been traditionally used to test models of galaxy evolution. Ho...
Abstract. We estimate the sensitivity of future galaxy surveys to cosmological parameters, using the...
In this paper we present for the first time the angular power spectra Cℓ(z,z') for number counts fro...
A Fourier analysis on galaxy number counts from redshift data of both the Sloan Digital Sky Survey a...
We compute the redshift-dependent angular bispectrum of galaxy number counts at tree-level, includin...
We investigate the cosmological dependence and the constraining power of large-scale galaxy correlat...
We present a novel approach to compute systematically the relativistic projection effects at any ord...
This paper aims to connect the theory of relativistic cosmology number counts with the astronomical ...
International audienceContext: The galaxy number counts has been traditionally used to test models o...
We present the galaxy number overdensity up to second order in redshift space on cosmological scales...
This thesis aims to explore and emphasise on the significant relativistic contributions to observabl...
International audienceIn the near future, cosmology will enter the wide and deep galaxy survey era, ...
We report the correlation analysis of various redshift surveys which shows that the available data a...
We estimate the sensitivity of future galaxy surveys to cosmological parameters, using the redshift ...
We show that various milestones of high-redshift galaxy formation, such as the formation of the firs...
Context. The galaxy number counts has been traditionally used to test models of galaxy evolution. Ho...
Abstract. We estimate the sensitivity of future galaxy surveys to cosmological parameters, using the...
In this paper we present for the first time the angular power spectra Cℓ(z,z') for number counts fro...
A Fourier analysis on galaxy number counts from redshift data of both the Sloan Digital Sky Survey a...
We compute the redshift-dependent angular bispectrum of galaxy number counts at tree-level, includin...
We investigate the cosmological dependence and the constraining power of large-scale galaxy correlat...
We present a novel approach to compute systematically the relativistic projection effects at any ord...
This paper aims to connect the theory of relativistic cosmology number counts with the astronomical ...
International audienceContext: The galaxy number counts has been traditionally used to test models o...
We present the galaxy number overdensity up to second order in redshift space on cosmological scales...