Non-Gaussian halo assembly bias

Abstract

The strong dependence of the large-scale dark matter halo bias on the (local) non-Gaussianity parameter, f_NL, offers a promising avenue towards constraining primordial non-Gaussianity with large-scale structure surveys. In this paper, we present the first detection of the dependence of the non-Gaussian halo bias on halo formation history using N-body simulations. We also present an analytic derivation of the expected signal based on the extended Press-Schechter formalism. In excellent agreement with our analytic prediction, we find that the halo formation history-dependent contribution to the non-Gaussian halo bias (which we call non-Gaussian halo assembly bias) can be factorized in a form approximately independent of redshift and halo mass. The correction to the non-Gaussian halo bias due to the halo formation history can be as large as 100%, with a suppression of the signal for recently formed halos and enhancement for old halos. This could in principle be a problem for realistic galaxy surveys if observational selection effects were to pick galaxies occupying only recently formed halos. Current semi-analytic galaxy formation models, for example, imply an enhancement in the expected signal of ~23% and ~48% for galaxies at z=1 selected by stellar mass and star formation rate, respectively.

20 pages, 9 figures, submitted to JCAP. v2: accepted version, minor changes

References in corpus (36)

• Simulating the joint evolution of quasars, galaxies and their large-scale distribution
• Halo Models of Large Scale Structure
• Ellipsoidal collapse and an improved model for the number and spatial distribution of dark matter haloes
• Mass function of dark matter halos
• Non-Gaussianity from Inflation: Theory and Observations
• Acoustic Signatures in the Primary Microwave Background Bispectrum
• The imprints of primordial non-gaussianities on large-scale structure: scale dependent bias and abundance of virialized objects
• The age dependence of halo clustering
• The Dependence of Halo Clustering on Halo Formation History, Concentration, and Occupation
• The Three--Point Correlation Function of the Cosmic Microwave Background in Inflationary Models
• The shape of non-Gaussianities
• Constraints on local primordial non-Gaussianity from large scale structure
• The effect of primordial non-Gaussianity on halo bias
• Assembly bias in the clustering of dark matter haloes
• Large-scale structure, the cosmic microwave background, and primordial non-gaussianity
• The Cluster Abundance in Flat and Open Cosmologies
• Halo assembly bias and its effects on galaxy clustering
• The Universal Mass Accretion History of CDM Haloes
• Halo Assembly Bias in Hierarchical Structure Formation
• The Scale Dependence of Halo and Galaxy Bias: Effects in Real Space
• Primordial non-gaussianity, statistics of collapsed objects, and the Integrated Sachs-Wolfe effect
• The dependence of dark halo clustering on the formation epoch and the concentration parameter
• A Halo Model of Galaxy Colors and Clustering in the SDSS
• Large-scale non-Gaussian mass function and halo bias: tests on N-body simulations
• The recycling of gas and metals in galaxy formation: predictions of a dynamical feedback model
• The Luminosity-Weighted or `Marked' Correlation Function
• Non-Gaussian halo bias and future galaxy surveys
• The Role of Environment in the Mass-Metallicity Relation
• How to suppress the shot noise in galaxy surveys
• Assembly bias and the dynamical structure of dark matter halos
• Detectability of the effect of Inflationary non-Gaussianity on halo bias
• The Clustering of Massive Halos
• Void Statistics in Large Galaxy Redshift Surveys: Does Halo Occupation of Field Galaxies Depend on Environment?
• Galaxy Assembly Bias on the Red Sequence
• Pair Correlations and Merger Bias
• The scale dependence of mass assembly in galaxies

Cited by in corpus (39)

• Large-Scale Galaxy Bias
• Large-scale clustering of galaxies in general relativity
• Large-scale dark matter simulations
• Redshift-weighted constraints on primordial non-Gaussianity from the clustering of the eBOSS DR14 quasars in Fourier space
• Optimal Constraints on Local Primordial Non-Gaussianity from the Two-Point Statistics of Large-Scale Structure
• Primordial Non-Gaussianity from Biased Tracers: Likelihood Analysis of Real-Space Power Spectrum and Bispectrum
• Can we actually constrain $f_{\mathrm{NL}}$ using the scale-dependent bias effect? An illustration of the impact of galaxy bias uncertainties using the BOSS DR12 galaxy power spectrum
• N-body simulations with generic non-Gaussian initial conditions II: Halo bias
• On the impact of galaxy bias uncertainties on primordial non-Gaussianity constraints
• Galaxy bias and primordial non-Gaussianity: insights from galaxy formation simulations with IllustrisTNG
• Joint analysis of anisotropic power spectrum, bispectrum and trispectrum: application to N-body simulations
• Predictions for local PNG bias in the galaxy power spectrum and bispectrum and the consequences for $f_{\mathrm{NL}}$ constraints
• Non-Gaussianity and large-scale structure in a two-field inflationary model
• Primordial non-Gaussianity from the Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey I: Catalogue Preparation and Systematic Mitigation
• The Hunt for Primordial Interactions in the Large Scale Structures of the Universe
• Halo clustering and g_{NL}-type primordial non-Gaussianity
• Local stochastic non-Gaussianity and N-body simulations
• Assembly bias in the local PNG halo bias and its implication for $f_{\mathrm{NL}}$ constraints
• Constraining the initial conditions of the Universe using large scale structure
• Magnification effect on the detection of primordial non-Gaussianity from photometric surveys
• Primordial non-Gaussianities and zero bias tracers of the Large Scale Structure
• Local primordial non-Gaussianity from the large-scale clustering of photometric DESI luminous red galaxies
• Learning to Concentrate: Multi-tracer Forecasts on Local Primordial Non-Gaussianity with Machine-Learned Bias
• Large Scale Anisotropic Bias from Primordial non-Gaussianity
• Relative velocity of dark matter and barions in clusters of galaxies and measurements of their peculiar velocities
• Conditional Probabilities in the Excursion Set Theory. Generic Barriers and non-Gaussian Initial Conditions
• Constraining Scale-Dependent Non-Gaussianity with Future Large-Scale Structure and the CMB
• Light Fields during Inflation from BOSS and Future Galaxy Surveys
• Taming assembly bias for primordial non-Gaussianity
• Quijote-PNG: The Information Content of the Halo Mass Function
• Halo assembly bias from a deep learning model of halo formation
• Constraints on primordial non-Gaussianity from WMAP7 and Luminous Red Galaxies power spectrum and forecast for future surveys
• Scale Dependence of the Halo Bias in General Local-Type Non-Gaussian Models I: Analytical Predictions and Consistency Relations
• The Renormalization Group for Large-Scale Structure: Primordial non-Gaussianities
• Scale-dependent bias from an inflationary bispectrum: the effect of a stochastic moving barrier
• Non-Gaussian assembly bias from a semi-analytic galaxy formation model
• How do uncertainties in galaxy formation physics impact field-level galaxy bias?
• Assembly bias in quadratic bias parameters of dark matter halos from forward modeling
• Quijote PNG: The information content of the halo power spectrum and bispectrum