530 citations · 2.1k across the 52 of their papers we have counts for
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Nonlinear velocity power spectrum: modeling the cosmological dependence on the Hubble constant and cold dark matter density
Francesca Lepori, Ruth Durrer, Martin Kunz +3
In this paper we present a semi-analytical model for the velocity power spectrum in $\La$CDM cosmology for wave numbers Mpc. We mainly concentrate on the dominant divergence…
Signatures of kinetic gravity braiding in cosmological probes of the gravitational field
Ahmad Nouri-Zonoz, Farbod Hassani, Julian Adamek +2
We study the observational signatures of kinetic gravity braiding (KGB) models in relativistic cosmological probes constructed along the past light cone. Using the relativistic …
Perturbative and numerical study of nonlinear relativistic effects in weak lensing
Matteo Magi, Francesca Lepori, Julian Adamek
The standard weak lensing formalism assumes that the lensing map relating the observed image of a source to its intrinsic shape depends only on the deflection angle. We show that t…
Transverse Velocities in Real-Time Cosmology: Position Drift in Relativistic N-Body Simulations
Alexander Oestreicher, Chris Clarkson, Julian Adamek +1
The era of real-time cosmology has begun. It is now possible to directly measure the apparent drift of high-redshift astronomical sources across the sky . Th…
Redshift Drift in Relativistic N-Body Simulations
Alexander Oestreicher, Chris Clarkson, Julian Adamek +1
The cosmological redshift drift promises to be the first observable directly measuring the evolution of the cosmic expansion rate and should be detectable with upcoming surveys by…
Angular bispectrum of matter number counts in cosmic structures
Thomas Montandon, Enea Di Dio, Cornelius Rampf +1
The bispectrum of galaxy number counts is a key probe of large-scale structure, offering insights into the initial conditions of the Universe, the nature of gravity, and cosmologic…
Towards Cosmography of the Local Universe
Julian Adamek, Chris Clarkson, Ruth Durrer +3
Anisotropies in the distance-redshift relation of cosmological sources are expected due to large-scale inhomogeneities in the local Universe. When the observed sources are tracing…
A case study for measuring the relativistic dipole of a galaxy cross-correlation with the Dark Energy Spectroscopic Instrument
Camille Bonvin, Francesca Lepori, Sebastian Schulz +3
The data on spectroscopic galaxy clustering collected by the Dark Energy Spectroscopic Instrument (DESI) will allow the significant detection of subtle features in the galaxy two-p…
Relativistic matter bispectrum of cosmic structures on the light cone
Thomas Montandon, Julian Adamek, Oliver Hahn +4
Upcoming surveys of cosmic structures will probe scales close to the cosmological horizon, which opens up new opportunities for testing the cosmological concordance model to high a…
Euclid: Modelling massive neutrinos in cosmology -- a code comparison
J. Adamek, R. E. Angulo, C. Arnold +133
The measurement of the absolute neutrino mass scale from cosmological large-scale clustering data is one of the key science goals of the Euclid mission. Such a measurement relies o…
The halo bias for number counts on the light cone from relativistic N-body simulations
Francesca Lepori, Sebastian Schulz, Julian Adamek +1
We present the halo number counts and its two-point statistics, the observable angular power spectrum, extracted for the first time from relativistic N-body simulations. The halo c…
Biased tracers as a probe of beyond-CDM cosmologies
Farbod Hassani, Julian Adamek, Ruth Durrer +1
Cosmological models beyond CDM, like those featuring massive neutrinos or modifications of gravity, often display a characteristic change (scale-dependent suppression or enhance…
A new instability in clustering dark energy?
Farbod Hassani, Julian Adamek, Martin Kunz +2
In this paper, we study the effective field theory (EFT) of dark energy for the -essence model beyond linear order. Using particle-mesh -body simulations that consistently so…
Relativistic second-order initial conditions for simulations of large-scale structure
J. Adamek, J. Calles, T. Montandon +2
Relativistic corrections to the evolution of structure can be used to test general relativity on cosmological scales. They are also a well-known systematic contamination in the sea…
Euclid preparation: XIX. Impact of magnification on photometric galaxy clustering
F. Lepori, I. Tutusaus, C. Viglione +183
We investigate the importance of lensing magnification for estimates of galaxy clustering and its cross-correlation with shear for the photometric sample of Euclid. Using updated s…
A new nonlinear instability for scalar fields
Farbod Hassani, Pan Shi, Julian Adamek +2
In this letter we introduce the non-linear partial differential equation (PDE) showing a new type of instability. Such equations appear in…
Cosmological Simulations of Number Counts
Francesca Lepori, Julian Adamek, Ruth Durrer
In this paper we present for the first time the angular power spectra for number counts from relativistic N-body simulations. We use the relativistic N-body code gev…
Observing relativistic features in large-scale structure surveys -- II: Doppler magnification in an ensemble of relativistic simulations
Louis Coates, Julian Adamek, Philip Bull +2
The standard cosmological model is inherently relativistic, and yet a wide range of cosmological observations can be predicted accurately from essentially Newtonian theory. This is…
Observing relativistic features in large-scale structure surveys -- I: Multipoles of the power spectrum
Caroline Guandalin, Julian Adamek, Philip Bull +3
Planned efforts to probe the largest observable distance scales in future cosmological surveys are motivated by a desire to detect relic correlations left over from inflation, and…
Clustering dark energy imprints on cosmological observables of the gravitational field
Farbod Hassani, Julian Adamek, Martin Kunz
We study cosmological observables on the past light cone of a fixed observer in the context of clustering dark energy. We focus on observables that probe the gravitational field di…
Numerical solutions to Einstein's equations in a shearing-dust Universe: a code comparison
Julian Adamek, Cristian Barrera-Hinojosa, Marco Bruni +3
A number of codes for general-relativistic simulations of cosmological structure formation have been developed in recent years. Here we demonstrate that a sample of these codes pro…
Weak-lensing observables in relativistic N-body simulations
Francesca Lepori, Julian Adamek, Ruth Durrer +2
We present a numerical weak-lensing analysis that is fully relativistic and non-perturbative for the scalar part of the gravitational potential and first-order in the vector part,…
Ray tracing the integrated Sachs-Wolfe effect through the light cones of the Dark Energy Universe Simulation -- Full Universe Runs
Julian Adamek, Yann Rasera, Pier Stefano Corasaniti +1
The late integrated Sachs-Wolfe (ISW) effect correlates the Cosmic Microwave Background (CMB) temperature anisotropies with foreground cosmic large-scale structures. As the correla…
Parametrising non-linear dark energy perturbations
Farbod Hassani, Benjamin L'Huillier, Arman Shafieloo +2
In this paper, we quantify the non-linear effects from -essence dark energy through an effective parameter that encodes the additional contribution of a dark energy fluid or…