Simulating nonlinear cosmological structure formation with massive neutrinos

Abstract

We present a new method for simulating cosmologies that contain massive particles with thermal free streaming motion, such as massive neutrinos or warm/hot dark matter. This method combines particle and fluid descriptions of the thermal species to eliminate the shot noise known to plague conventional N-body simulations. We describe this method in detail, along with results for a number of test cases to validate our method, and check its range of applicability. Using this method, we demonstrate that massive neutrinos can produce a significant scale-dependence in the large-scale biasing of deep voids in the matter field. We show that this scale-dependence may be quantitatively understood using an extremely simple spherical expansion model which reproduces the behavior of the void bias for different neutrino parameters.

20 pages, to be submitted to JCAP

References in corpus (10)

• Observation of electron-antineutrino disappearance at Daya Bay
• High-Resolution Rotation Curves and Galaxy Mass Models from THINGS
• The imprints of primordial non-gaussianities on large-scale structure: scale dependent bias and abundance of virialized objects
• Measurement of Neutrino Oscillation by the K2K Experiment
• Discreteness effects in simulations of Hot/Warm dark matter
• Neutrino cosmology and Planck
• The Cosmic Code Comparison Project
• Halo bias in mixed dark matter cosmologies
• DEMNUni: ISW, Rees-Sciama, and weak-lensing in the presence of massive neutrinos
• Precision reconstruction of the dark matter-neutrino relative velocity from N-body simulations

Cited by in corpus (50)

• Large-scale dark matter simulations
• The Mira-Titan Universe II: Matter Power Spectrum Emulation
• The High Latitude Spectroscopic Survey on the Nancy Grace Roman Space Telescope
• Constraining $M_{\nu }$ with the Bispectrum II: The Total Information Content of the Galaxy Bispectrum
• Detecting Neutrino Mass by Combining Matter Clustering, Halos, and Voids
• Cosmic voids in modified gravity models with massive neutrinos
• Relativistic N-body simulations with massive neutrinos
• The GIGANTES dataset: precision cosmology from voids in the machine learning era
• Euclid: Forecasts from redshift-space distortions and the Alcock-Paczynski test with cosmic voids
• An optimal nonlinear method for simulating relic neutrinos
• Euclid: Cosmological forecasts from the void size function
• Cosmological constraints from the BOSS DR12 void size function
• A Lagrangian Perturbation Theory in the presence of massive neutrinos
• Aemulus $\nu$: Precise Predictions for Matter and Biased Tracer Power Spectra in the Presence of Neutrinos
• Clustering in Massive Neutrino Cosmologies via Eulerian Perturbation Theory
• Beware of Fake $\nu$s: The Effect of Massive Neutrinos on the Nonlinear Evolution of Cosmic Structure
• The Gravitational Lensing Signatures of BOSS Voids in the Cosmic Microwave Background
• Warm Dark Matter and Cosmic Reionization
• Why Cosmic Voids Matter: Nonlinear Structure & Linear Dynamics
• DEMNUni: disentangling dark energy from massive neutrinos with the void size function
• The halo bias inside cosmic voids
• Euclid: Modelling massive neutrinos in cosmology -- a code comparison
• The universal multiplicity function: counting halos and voids
• The cosmic neutrino background as a collection of fluids in large-scale structure simulations
• Cosmological Vlasov-Poisson Simulations of Structure Formation with Relic Neutrinos: Nonlinear Clustering and the Neutrino Mass
• Probing massive neutrinos with the Minkowski functionals of large-scale structure
• The void-galaxy cross-correlation function with massive neutrinos and modified gravity
• Quintessential Scale Dependence from Separate Universe Simulations
• Tracer-Field Cross-Correlations with $k$-Nearest Neighbor Distributions
• Probing massive neutrinos with the Minkowski functionals of the galaxy distribution
• The clustering of critical points in the evolving cosmic web
• Super-sample covariance of the power spectrum, bispectrum, halos, voids, and their cross covariances
• Probing dark matter interactions with 21cm observations
• Geodesic motion and phase-space evolution of massive neutrinos
• The Sejong Suite: Cosmological Hydrodynamical Simulations with Massive Neutrinos, Dark Radiation, and Warm Dark Matter
• Impact of Massive Neutrinos and Dark Radiation on the High-redshift Cosmic Web. I. Lyman-Alpha Forest Observables
• Sensitivity tests of cosmic velocity fields to massive neutrinos
• Signatures of Light Massive Relics on nonlinear structure formation
• Hybrid multi-fluid-particle simulations of the cosmic neutrino background
• Alcock-Paczyński effect on void-finding: Implications for void-galaxy cross-correlation modelling
• Imprint of massive neutrinos on Persistent Homology of large-scale structure
• Improving initialization and evolution accuracy of cosmological neutrino simulations
• Unveiling the Universe with Emerging Cosmological Probes
• Intrinsic alignments of galaxies around cosmic voids
• The emptiness inside: Finding gaps, valleys, and lacunae with geometric data analysis
• A spherical hydrodynamical model of cosmic voids in ΛCDM and beyond
• Measuring neutrino mass and asymmetry with matter pairwise velocities
• Boltzmann-Poisson-like approach to simulating the galactic halo response to satellite accretion Dependence on the halo density profile
• DeepVoid: A Deep Learning Void Detector
• Void spin distribution as a powerful probe of ${\sigma }_8$