activity
20222026
most citedConstraining f(R) gravity with cross-correlation of galaxies and cosmic microwave background lensing

14 citations · 30 across the 11 of their papers we have counts for

collaborators

12 papers

astro-ph.CO2026

The gravitational constant and the cosmic microwave background

Brahim Lamine, Sébastien Beauchamp, Alain Blanchard +3

The CMB constrains the gravitational constant at recombination to a few percent of its laboratory value, but the effect of on recombination itself is usually absorbed into…

astro-ph.CO2026

cloelib: A Flexible Python Library for Computing Cosmological Observables in the Euclid Era

Marco Bonici, Guadalupe Cañas-Herrera, Pedro Carrilho +54

cloelib is a Python library developed to compute cosmological observables within the Cosmology Likelihood for Observables in Euclid (CLOE) ecosystem (cloe-org). As cosmology enters…

astro-ph.CO2026

Euclid preparation. XCV. Cosmology Likelihood for Observables in Euclid (CLOE). 2. Code implementation

Euclid Collaboration, S. Joudaki, V. Pettorino +345

We provide a description of the code implementation and structure of Cosmology Likelihood for Observables in Euclid (CLOE), developed by members of the Euclid Consortium. CLOE is a…

astro-ph.CO2025

The Simons Observatory: forecasted constraints on primordial gravitational waves with the expanded array of Small Aperture Telescopes

The Simons Observatory Collaboration, I. Abril-Cabezas, S. Adachi +479

We present updated forecasts for the scientific performance of the degree-scale (0.5 deg FWHM at 93 GHz), deep-field survey to be conducted by the Simons Observatory (SO). By 2027,…

astro-ph.CO2025

Detecting gravitational lensing by matter currents

C. Murray, R. Kou, J. G. Bartlett

We explore the observational prospects for detecting gravitational lensing induced by cosmological matter currents, a relativistic correction to the standard density lensing effect…

astro-ph.CO2025★ 5 cited

Unified dark fluid with null sound speed as an alternative to phantom dark energy

Raphaël Kou, Antony Lewis

Recent BAO measurements from DESI, when combined with CMB and supernovae data, suggest evolving dark energy and in particular point to a possible phantom regime, with an equation o…

astro-ph.CO2025★ 3 cited

Improving CMB constraints on early Universe physics with LSS: A multi-probe forecast including cross-covariance

Raphaël Kou, Antony Lewis

Extensions to the model prior to recombination can modify the growth of perturbations around radiation-matter equality, leaving a distinct signature in the matter p…

astro-ph.IM2025★ 1 cited

The Simons Observatory: Science Goals and Forecasts for the Enhanced Large Aperture Telescope

The Simons Observatory Collaboration, M. Abitbol, I. Abril-Cabezas +419

We describe updated scientific goals for the wide-field, millimeter-wave survey that will be produced by the Simons Observatory (SO). Significant upgrades to the 6-meter SO Large A…

astro-ph.CO2024★ 4 cited

A flexible parameterization to test early physics solutions to the Hubble tension with future CMB data

Raphaël Kou, Antony Lewis

One approach to reconciling local measurements of a high expansion rate with observations of acoustic oscillations in the CMB and galaxy clustering (the "Hubble tension") is to int…

astro-ph.CO2024

Cosmological measurement of the gravitational constant using the CMB, the BAO and the BBN

Brahim Lamine, Yacob Ozdalkiran, Louis Mirouze +5

Recent cosmological observations have provided numerous new observations with increasing precision that have led to the era of precision cosmology. The exquisite quality of these o…

astro-ph.CO2023★ 14 cited

Constraining f(R) gravity with cross-correlation of galaxies and cosmic microwave background lensing

Raphaël Kou, Calum Murray, James G. Bartlett

We look for signatures of the Hu-Sawicki f(R) modified gravity theory, proposed to explain the observed accelerated expansion of the universe; in observations of the galaxy distrib…

astro-ph.CO2022★ 3 cited

Cosmic Census: Relative Distributions of Dark Matter, Galaxies and Diffuse Gas

Raphaël Kou, James G. Bartlett

Galaxies, diffuse gas, and dark matter make up the cosmic web that defines the large-scale structure of the Universe. We constrained the joint distribution of these constituents by…