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Found 9 papers, 8 papers with code
Uncertain Evidence in Probabilistic Models and Stochastic Simulators
We consider the problem of performing Bayesian inference in probabilistic models where observations are accompanied by uncertainty, referred to as "uncertain evidence."
HMcode-2020: Improved modelling of non-linear cosmological power spectra with baryonic feedback
We present an updated version of the HMcode augmented halo model that can be used to make accurate predictions of the non-linear matter power spectrum over a wide range of cosmologies.
Cosmology and Nongalactic Astrophysics
Core Cosmology Library: Precision Cosmological Predictions for LSST
As a result, predictions for correlation functions of galaxy clustering, galaxy-galaxy lensing and cosmic shear are demonstrated to be within a fraction of the expected statistical uncertainty of the observables for the models and in the range of scales of interest to LSST.
Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics
KiDS-450 + 2dFLenS: Cosmological parameter constraints from weak gravitational lensing tomography and overlapping redshift-space galaxy clustering
The complementarity of our observables allows for constraints on modified gravity degrees of freedom that are not simultaneously bounded with either probe alone, and up to a factor of three improvement in the $S_8$ constraint in the extended cosmology compared to KiDS alone.
Cosmology and Nongalactic Astrophysics
Accurate halo-model matter power spectra with dark energy, massive neutrinos and modified gravitational forces
We show that the tuned halo model method can predict the non-linear matter power spectrum measured from simulations of parameterised $w(a)$ dark energy models at the few per cent level for $k<10\, h\mathrm{Mpc}^{-1}$, and we present theoretically motivated extensions to cover non-minimally coupled scalar fields, massive neutrinos and Vainshtein screened modified gravity models that result in few per cent accurate power spectra for $k<10\, h\mathrm{Mpc}^{-1}$.
Cosmology and Nongalactic Astrophysics
CFHTLenS revisited: assessing concordance with Planck including astrophysical systematics
When the systematic uncertainties are considered independently, the intrinsic alignment amplitude is the only degree of freedom that is substantially preferred by the data.
Cosmology and Nongalactic Astrophysics
An accurate halo model for fitting non-linear cosmological power spectra and baryonic feedback models
We are able to fit all feedback models investigated at the 5 per cent level using only two free parameters, and we place limits on the range of these halo parameters for feedback models investigated by the OWLS simulations.
Cosmology and Nongalactic Astrophysics
Remapping simulated halo catalogues in redshift space
We discuss the extension to redshift space of a rescaling algorithm, designed to alter the effective cosmology of a pre-existing simulated particle distribution or catalogue of dark matter haloes.
Cosmology and Nongalactic Astrophysics
Remapping dark matter halo catalogues between cosmological simulations
We present and test a method for modifying the catalogue of dark matter haloes produced from a given cosmological simulation, so that it resembles the result of a simulation with an entirely different set of parameters.
Cosmology and Nongalactic Astrophysics
