Assembly bias in the local PNG halo bias and its implication for $f_{\mathrm{NL}}$ constraints

Abstract

We use $N$-body simulations to study halo assembly bias (i.e., the dependence of halo clustering on properties beyond total mass) in the density and primordial non-Gaussianity (PNG) linear bias parameters $b_1$ and $b_{\varphi }$, respectively. We consider concentration, spin and sphericity as secondary halo properties, for which we find a clear detection of assembly bias for $b_1$ and $b_{\varphi }$. At fixed total mass, halo spin and sphericity impact $b_1$ and $b_{\varphi }$ in a similar manner, roughly preserving the shape of the linear $b_{\varphi }(b_1)$ relation satisfied by the global halo population. Halo concentration, however, drives $b_1$ and $b_{\varphi }$ in opposite directions. This induces significant changes to the $b_{\varphi }(b_1)$ relation, with higher concentration halos having higher amplitude of $b_{\varphi }(b_1)$. For $z=0.5$ and $b_1\approx 2$ in particular, the population comprising either all halos, those with the $33\%$ lowest or those with the $33\%$ highest concentrations have a PNG bias of $b_{\varphi }\approx 3$, $b_{\varphi }\approx -1$ and $b_{\varphi }\approx 9$, respectively. Varying the halo concentration can make $b_{\varphi }$ very small and even change its sign. These results have important ramifications for galaxy clustering constraints of the local PNG parameter $f_{\mathrm{NL}}$ that assume fixed forms for the $b_{\varphi }(b_1)$ relation. We illustrate the significant impact of halo assembly bias in actual data using the BOSS DR12 galaxy power spectrum: assuming that BOSS galaxies are representative of all halos, the $33\%$ lowest or the $33\%$ highest concentration halos yields ${\sigma }_{f_{\mathrm{NL}}}=44,165,19$, respectively. Our results suggest taking host halo concentration into account in galaxy selection strategies to maximize the signal-to-noise on $f_{\mathrm{NL}}$. They also motivate more simulation-based efforts to study the $b_{\varphi }(b_1)$ relation of halos and galaxies.

arXiv comment21 pages, 4 figures, comments welcome; V2 minor modifications throughout, published in JCAP

References in corpus (78)

• A Universal Density Profile from Hierarchical Clustering
• The cosmological simulation code GADGET-2
• Non-Gaussian features of primordial fluctuations in single field inflationary models
• E pur si muove: Galiliean-invariant cosmological hydrodynamical simulations on a moving mesh
• Profiles of dark haloes: evolution, scatter, and environment
• Simulating Galaxy Formation with the IllustrisTNG Model
• Concentrations of Dark Halos from their Assembly Histories
• Acoustic Signatures in the Primary Microwave Background Bispectrum
• A universal angular momentum profile for galactic halos
• Ahf: Amiga's Halo Finder
• The imprints of primordial non-gaussianities on large-scale structure: scale dependent bias and abundance of virialized objects
• Large-Scale Galaxy Bias
• The age dependence of halo clustering
• Transients from Initial Conditions in Cosmological Simulations
• Single field consistency relation for the 3-point function
• Halo concentrations in the standard LCDM cosmology
• The Dependence of Halo Clustering on Halo Formation History, Concentration, and Occupation
• Concentration, Spin and Shape of Dark Matter Haloes: Scatter and the Dependence on Mass and Environment
• Constraints on local primordial non-Gaussianity from large scale structure
• The evolution substructure I: a new identification method
• The Arepo public code release
• Assembly bias in the clustering of dark matter haloes
• Transients from Initial Conditions: A Perturbative Analysis
• Halo assembly bias and its effects on galaxy clustering
• On the environmental dependence of halo formation
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: mock galaxy catalogues for the BOSS Final Data Release
• The clustering of massive galaxies at z~0.5 from the first semester of BOSS data
• Halo Assembly Bias in Hierarchical Structure Formation
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Modeling the clustering and halo occupation distribution of BOSS-CMASS galaxies in the Final Data Release
• Scale-dependent bias induced by local non-Gaussianity: A comparison to N-body simulations
• Halo mass function and scale-dependent bias from N-body simulations with non-Gaussian initial conditions
• Ingredients for 21cm intensity mapping
• Cosmology with the SPHEREX All-Sky Spectral Survey
• The dependence of dark halo clustering on the formation epoch and the concentration parameter
• Initial conditions to cosmological N-body simulations, or how to run an ensemble of simulations
• Large-scale non-Gaussian mass function and halo bias: tests on N-body simulations
• Primordial non-Gaussianity: large-scale structure signature in the perturbative bias model
• Structure formation from non-Gaussian initial conditions: multivariate biasing, statistics, and comparison with N-body simulations
• The (not so) squeezed limit of the primordial 3-point function
• Beyond Assembly Bias: Exploring Secondary Halo Biases for Cluster-size Haloes
• Assembly bias and the dynamical structure of dark matter halos
• Redshift-weighted constraints on primordial non-Gaussianity from the clustering of the eBOSS DR14 quasars in Fourier space
• Dominance of gauge artifact in the consistency relation for the primordial bispectrum
• Constraints on Multi-Field Inflation from the BOSS Galaxy Survey
• Primordial non-Gaussianity in the Bispectrum of the Halo Density Field
• Galaxy Bias and Primordial Non-Gaussianity
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: the low redshift sample
• The assembly bias of dark matter haloes to higher orders
• Spatial Clustering of Dark Matter Halos: Secondary Bias, Neighbor Bias, and the Influence of Massive Neighbors on Halo Properties
• Beyond LIMD bias: a measurement of the complete set of third-order halo bias parameters
• Inflation: Theory and Observations
• 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
• Verifying the consistency relation for the scale-dependent bias from local primordial non-Gaussianity
• Large-scale assembly bias of dark matter halos
• 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
• Cosmology Without Windows: Quadratic Estimators for the Galaxy Power Spectrum
• Designing an Inflation Galaxy Survey: how to measure $\sigma (f_{\mathrm{NL}})\sim 1$ using scale-dependent galaxy bias
• Galaxy bias from forward models: linear and second-order bias of IllustrisTNG galaxies
• Non-Gaussian halo assembly bias
• Linear response to long wavelength fluctuations using curvature simulations
• The Scale-Dependence of Halo Assembly Bias
• Predictions for local PNG bias in the galaxy power spectrum and bispectrum and the consequences for $f_{\mathrm{NL}}$ constraints
• The dependence of halo bias on age, concentration and spin
• The Persistence of Large Scale Structures I: Primordial non-Gaussianity
• The Hunt for Primordial Interactions in the Large Scale Structures of the Universe
• Separate Universe Simulations with IllustrisTNG: baryonic effects on power spectrum responses and higher-order statistics
• The nature of assembly bias - II. Halo spin
• The Mass-Concentration Relation and the Stellar-to-Halo Mass Ratio in the CFHT Stripe 82 Survey
• The cosmological dependence of halo and galaxy assembly bias
• Halo assembly bias from Separate Universe simulations
• Responses of Halo Occupation Distributions: a new ingredient in the halo model & the impact on galaxy bias
• Modeling HI at the field level
• Some assembly required: assembly bias in massive dark matter halos
• The clustering of galaxies in the completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Primordial non-Gaussianity in Fourier Space
• The local PNG bias of neutral Hydrogen, ${\mathrm{H}}_{\mathrm{I}}$
• The impact of massive neutrinos on halo assembly bias

Cited by in corpus (18)

• Learning to Concentrate: Multi-tracer Forecasts on Local Primordial Non-Gaussianity with Machine-Learned Bias
• Local primordial non-Gaussianity from the large-scale clustering of photometric DESI luminous red galaxies
• Taming assembly bias for primordial non-Gaussianity
• Constraining primordial non-Gaussianity by combining next-generation galaxy and 21 cm intensity mapping surveys
• Euclid preparation. XLI. Galaxy power spectrum modelling in real space
• PNG-UNITsims: Halo clustering response to primordial non-Gaussianities as a function of mass
• Quijote-PNG: The Information Content of the Halo Mass Function
• Halo assembly bias from a deep learning model of halo formation
• The Renormalization Group for Large-Scale Structure: Primordial non-Gaussianities
• Radio-optical synergies at high redshift to constrain primordial non-Gaussianity
• Non-Gaussian assembly bias from a semi-analytic galaxy formation model
• How do uncertainties in galaxy formation physics impact field-level galaxy bias?
• Linear Relativistic Corrections in the Spherical Fourier-Bessel Power Spectrum
• Constraining primordial non-Gaussianity from the large scale structure two-point and three-point correlation functions
• Squeezing information from radio surveys to probe the primordial Universe
• Elucidating the impact of massive neutrinos on halo assembly bias
• A revisited Correction to the Halo Mass Function for local-type Primordial non-Gaussianity
• The role of energy shear in the collapse of protohaloes