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Quijote-PNG: the information content of the halo power spectrum and bispectrum
We investigate how much can be learnt about four types of primordial non-Gaussianity
(PNG) from small-scale measurements of the halo field. Using the quijote-png simulations …
(PNG) from small-scale measurements of the halo field. Using the quijote-png simulations …
Fisher for complements: extracting cosmology and neutrino mass from the counts-in-cells PDF
We comprehensively analyse the cosmology dependence of counts-in-cells statistics. We
focus on the shape of the one-point probability distribution function (PDF) of the matter …
focus on the shape of the one-point probability distribution function (PDF) of the matter …
Galaxy power spectrum multipoles covariance in perturbation theory
We compute the covariance of the galaxy power spectrum multipoles in perturbation theory,
including the effects of nonlinear evolution, nonlinear and nonlocal bias, radial redshift …
including the effects of nonlinear evolution, nonlinear and nonlocal bias, radial redshift …
On the impact of galaxy bias uncertainties on primordial non-Gaussianity constraints
A Barreira - Journal of Cosmology and Astroparticle Physics, 2020 - iopscience.iop.org
We study the impact that uncertainties on assumed relations between galaxy bias
parameters have on constraints of the local PNG f NL parameter. We focus on the relation …
parameters have on constraints of the local PNG f NL parameter. We focus on the relation …
Comparing approximate methods for mock catalogues and covariance matrices–III: bispectrum
We compare the measurements of the bispectrum and the estimate of its covariance
obtained from a set of different methods for the efficient generation of approximate dark …
obtained from a set of different methods for the efficient generation of approximate dark …
Fitting the nonlinear matter bispectrum by the Halofit approach
We provide a new fitting formula of the matter bispectrum in the nonlinear regime calibrated
by high-resolution cosmological N-body simulations of 41 cold dark matter (wCDM, w …
by high-resolution cosmological N-body simulations of 41 cold dark matter (wCDM, w …
Perturbation theory approach to predict the covariance matrices of the galaxy power spectrum and bispectrum in redshift space
In this paper, we predict the covariance matrices of both the power spectrum and the
bispectrum, including full non-Gaussian contributions, redshift space distortions, linear bias …
bispectrum, including full non-Gaussian contributions, redshift space distortions, linear bias …
Stochastic gravitational wave background anisotropies in the mHz band: astrophysical dependencies
We show that the anisotropies of the astrophysical stochastic gravitational wave background
in the mHz band have a strong dependence on the modelling of galactic and sub-galactic …
in the mHz band have a strong dependence on the modelling of galactic and sub-galactic …
Bispectrum non-Gaussian covariance in redshift space
We provide an analytical description of the galaxy bispectrum covariance and the power
spectrum-bispectrum cross-covariance in redshift space that captures the dominant non …
spectrum-bispectrum cross-covariance in redshift space that captures the dominant non …
The covariance of squeezed bispectrum configurations
We measure the halo bispectrum covariance in a large set of N-body simulations and
compare it with theoretical expectations. We find a large correlation among (even mildly) …
compare it with theoretical expectations. We find a large correlation among (even mildly) …