530 citations · 1.7k across the 36 of their papers we have counts for
28 papers · 1 filter
Euclid Preparation. XXVIII. Forecasts for ten different higher-order weak lensing statistics
Euclid Collaboration, V. Ajani, M. Baldi +211
Recent cosmic shear studies have shown that higher-order statistics (HOS) developed by independent teams now outperform standard two-point estimators in terms of statistical precis…
Simulation techniques for modified gravity
Claudio Llinares
The standard paradigm of cosmology assumes General Relativity (GR) is a valid theory for gravity at scales in which it has not been properly tested. Developing novel tests of GR an…
The Accuracy of Weak Lensing Simulations
Stefan Hilbert, Alexandre Barreira, Giulio Fabbian +9
We investigate the accuracy of weak lensing simulations by comparing the results of five independently developed lensing simulation codes run on the same input -body simulation.…
Non-linear Phenomenology of Disformally Coupled Quintessence
Claudio Llinares, Robert Hagala, David F. Mota
The Quintessence model is one of the simplest and better known alternatives to Einstein's theory for gravity. The properties of the solutions have been studied in great detail in t…
Detecting Domain Walls in Laboratory Experiments
Claudio Llinares, Philippe Brax
The inherently unstable nature of domain walls makes their detection in laboratory experiments extremely challenging. We propose a method to stabilise domain walls in a particular…
Cosmological Constraints from Fourier Phase Statistics
Kamran Ali, Danail Obreschkow, Cullan Howlett +4
Most statistical inference from cosmic large-scale structure relies on two-point statistics, i.e.\ on the galaxy-galaxy correlation function (2PCF) or the power spectrum. These sta…
Testing modified gravity with globular clusters: the case of NGC 2419
Claudio Llinares
The dynamics of globular clusters has been studied in great detail in the context of general relativity as well as with modifications of gravity that strongly depart from the stand…
The shrinking domain framework I: a new, faster, more efficient approach to cosmological simulations
Claudio Llinares
The advent of the new generation of wide field galaxy surveys makes large N-body cosmological simulations a necessary evil. While the cosmological simulation codes have evolved a l…
Weighted density fields as improved probes of modified gravity models
Claudio Llinares, Nuala McCullagh
When it comes to searches for extensions to general relativity, large efforts are being dedicated to accurate predictions for the power spectrum of density perturbations. While thi…
Modelling Void Abundance in Modified Gravity
Rodrigo Voivodic, Marcos Lima, Claudio Llinares +1
We use a spherical model and an extended excursion set formalism with drifting diffusive barriers to predict the abundance of cosmic voids in the context of general relativity as w…
Cosmic Tsunamis in Modified Gravity: Disruption of Screening Mechanisms from Scalar Waves
R. Hagala, C. Llinares, D. F. Mota
Extending general relativity by adding extra degrees of freedom is a popular approach for explaining the accelerated expansion of the Universe and to build high energy completions…
Weak lensing by galaxy troughs with modified gravity
Alexandre Barreira, Sownak Bose, Baojiu Li +1
We study the imprints that theories of gravity beyond GR can leave on the lensing signal around line of sight directions that are predominantly halo-underdense (called troughs) and…
Probing scalar tensor theories for gravity in redshift space
Cristiano G. Sabiu, David F. Mota, Claudio Llinares +1
We present measurements of the spatial clustering statistics in redshift space of various scalar field modified gravity simulations. We utilise the two-point and the three-point co…
Distinguishing screening mechanisms with environment-dependent velocity statistics
Magnus Fagernes Ivarsen, Philip Bull, Claudio Llinares +1
Alternative theories of gravity typically invoke an environment-dependent screening mechanism to allow phenomenologically interesting deviations from general relativity (GR) to man…
RAY-RAMSES: a code for ray tracing on the fly in N-body simulations
Alexandre Barreira, Claudio Llinares, Sownak Bose +1
We present a ray tracing code to compute integrated cosmological observables on the fly in AMR N-body simulations. Unlike conventional ray tracing techniques, our code takes full a…
Beyond CDM: Problems, solutions, and the road ahead
Philip Bull, Yashar Akrami, Julian Adamek +37
Despite its continued observational successes, there is a persistent (and growing) interest in extending cosmology beyond the standard model, CDM. This is motivated by a range o…
Modified Gravity N-body Code Comparison Project
Hans A. Winther, Fabian Schmidt, Alexandre Barreira +12
Self-consistent -body simulations of modified gravity models are a key ingredient to obtain rigorous constraints on deviations from General Relativity using large-scale st…
Cosmological simulations with disformally coupled symmetron fields
R. Hagala, C. Llinares, D. F. Mota
We investigate statistical properties of the distribution of matter at redshift zero in disformal gravity by using N-body simulations. The disformal model studied here consists of…
Hydrodynamic Effects in the Symmetron and -gravity Models
Amir Hammami, Claudio Llinares, David F. Mota +1
In this paper we present the first results from implementing two scalar-tensor modified gravity theories, the symmetron and the Hu-Sawicki -gravity model, into a hydrodynamic…
Halo velocity profiles in screened modified gravity theories
Max Gronke, Claudio Llinares, David F. Mota +1
Screened modified gravity predicts potentially large signatures in the peculiar velocity field that makes it an interesting probe to test gravity on cosmological scales. We investi…
Domain walls coupled to matter: the symmetron example
Claudio Llinares, Levon Pogosian
We study properties of domain walls in the symmetron model, in which the scalar gravitational degree of freedom decouples from matter in regions of high density, and exhibits a spo…
Cosmological simulations of screened modified gravity out of the static approximation: effects on matter distribution
Claudio Llinares, David F. Mota
In the context of scalar tensor theories for gravity, there is a universally adopted hypothesis when running N-body simulations that time derivatives in the equation of motion for…
Gravitational redshift profiles in the and symmetron models
Max B. Gronke, Claudio Llinares, David F. Mota
Aims. We investigate the gravitational redshift in clusters of galaxies in the symmetron and Hu-Sawicky models. The characteristic feature of both models is the screening me…
ISIS: a new N-body cosmological code with scalar fields based on RAMSES. Code presentation and application to the shapes of clusters
Claudio Llinares, David F. Mota, Hans A. Winther
Several extensions of the standard cosmological model include scalar fields as new degrees of freedom in the underlying gravitational theory. A particular class of these scalar fie…