Measuring dark matter-neutrino relative velocity on cosmological scales

Abstract

We present a new method to measure neutrino masses using the dark matter-neutrino relative velocity. The relative motion between dark matter and neutrinos results in a parity-odd bispectrum which can be measured from cross-correlation of different cosmic fields. This new method is not affected by most systematics which are parity even and not limited by the knowledge of optical depth to the cosmic microwave background. We estimate the detectability of the relative velocity effect and find that the minimal sum of neutrino masses could be detected at high significance with upcoming surveys.

arXiv comment6 pages, 2 figures, 1 table, published version

References in corpus (39)

• The Cosmic Linear Anisotropy Solving System (CLASS) II: Approximation schemes
• Mass Reconstruction with CMB Polarization
• Relative velocity of dark matter and baryonic fluids and the formation of the first structures
• Weighing Neutrinos with Galaxy Surveys
• Neutrino Physics from the Cosmic Microwave Background and Large Scale Structure
• Cosmology with massive neutrinos II: on the universality of the halo mass function and bias
• DEMNUni: The clustering of large-scale structures in the presence of massive neutrinos
• CPT-Symmetric Universe
• Parameter constraints from cross-correlation of CMB lensing with galaxy clustering
• MassiveNuS: Cosmological Massive Neutrino Simulations
• Modeling Biased Tracers at the Field Level
• Large-scale BAO signatures of the smallest galaxies
• The promising future of a robust cosmological neutrino mass measurement
• Towards optimal extraction of cosmological information from nonlinear data
• Iterative initial condition reconstruction
• An EFT description of galaxy intrinsic alignments
• The effect of relative velocity and density perturbations between baryons and dark matter on the clustering of galaxies
• Deconstructing the neutrino mass constraint from galaxy redshift surveys
• An Efficient and Accurate Hybrid Method for Simulating Non-Linear Neutrino Structure
• Neutrino masses and beyond-$\Lambda$CDM cosmology with LSST and future CMB experiments
• Cosmological neutrino simulations at extreme scale
• Precision reconstruction of the dark matter-neutrino relative velocity from N-body simulations
• Streaming velocities and the baryon-acoustic oscillation scale
• Reducing Noise in Cosmological N-body Simulations with Neutrinos
• First detection of scale-dependent linear halo bias in $N$-body simulations with massive neutrinos
• Efficient Computation of Galaxy Bias with Neutrinos and Other Relics
• Nonlinear reconstruction
• Lensing reconstruction from line intensity maps: the impact of gravitational nonlinearity
• Biased Tracers of Two Fluids in the Lagrangian Picture
• Weak Lensing of Intensity Mapping: the Cosmic Infrared Background
• Cosmic tidal reconstruction
• Measurement of the Cold Dark Matter-Neutrino Dipole in the TianNu Simulation
• Measurement of Neutrino Masses from Relative Velocities
• Accurate determination of halo velocity bias in simulations and its cosmological implications
• Probing Neutrino Hierarchy and Chirality via Wakes
• Parity-odd Neutrino Torque Detection
• Understanding the neutrino mass constraints achievable by combining CMB lensing and spectroscopic galaxy surveys
• Dynamical friction in the primordial neutrino sea
• Dipole Distortions in the Intergalactic Medium

Cited by in corpus (5)

• Weighing neutrinos with the halo environment
• Neutrino winds on the sky
• Nonlinear Reconstruction of the Velocity Field
• Hybrid multi-fluid-particle simulations of the cosmic neutrino background
• The Effective Field Theory of Large Scale Structure for Mixed Dark Matter Scenarios