213 citations · 397 across the 7 of their papers we have counts for
7 papers
Beyond 32-point cosmology: the integrated shear and galaxy 3-point correlation functions
Anik Halder, Zhengyangguang Gong, Alexandre Barreira +3
We present the integrated 3-point correlation functions (3PCF) involving both the cosmic shear and the galaxy density fields. These are a set of higher-order statistics that descri…
Constraints on compensated isocurvature perturbations from BOSS DR12 galaxy data
Alexandre Barreira
We use the BOSS DR12 galaxy power spectrum to constrain compensated isocurvature perturbations (CIP), which are opposite-sign primordial baryon and dark matter perturbations that l…
Lensing is Low: Cosmology, Galaxy Formation, or New Physics?
Alexie Leauthaud, Shun Saito, Stefan Hilbert +19
We present high signal-to-noise galaxy-galaxy lensing measurements of the BOSS CMASS sample using 250 square degrees of weak lensing data from CFHTLenS and CS82. We compare this si…
Speeding up -body simulations of modified gravity: Chameleon screening models
Sownak Bose, Baojiu Li, Alexandre Barreira +5
We describe and demonstrate the potential of a new and very efficient method for simulating certain classes of modified gravity theories, such as the widely studied gravity…
Linear perturbations in K-mouflage cosmologies with massive neutrinos
Alexandre Barreira, Philippe Brax, Sebastien Clesse +2
We present a comprehensive derivation of linear perturbation equations for different matter species, including photons, baryons, cold dark matter, scalar fields, massless and massi…
Nonlinear structure formation in Nonlocal Gravity
Alexandre Barreira, Baojiu Li, Wojciech A. Hellwing +2
We study the nonlinear growth of structure in nonlocal gravity models with the aid of N-body simulation and the spherical collapse and halo models. We focus on a model in which the…