Halo assembly bias and the tidal anisotropy of the local halo environment

Abstract

We study the role of the local tidal environment in determining the assembly bias of dark matter haloes. Previous results suggest that the anisotropy of a halo's environment (i.e, whether it lies in a filament or in a more isotropic region) can play a significant role in determining the eventual mass and age of the halo. We statistically isolate this effect using correlations between the large-scale and small-scale environments of simulated haloes at $z=0$ with masses between $10^{11.6}\lesssim (m/h^{-1}{M}_{\odot })\lesssim 10^{14.9}$. We probe the large-scale environment using a novel halo-by-halo estimator of linear bias. For the small-scale environment, we identify a variable ${\alpha }_R$ that captures the $\text{tidal anisotropy}$ in a region of radius $R=4R_{\text{200b}}$ around the halo and correlates strongly with halo bias at fixed mass. Segregating haloes by ${\alpha }_R$ reveals two distinct populations. Haloes in highly isotropic local environments (${\alpha }_R\lesssim 0.2$) behave as expected from the simplest, spherically averaged analytical models of structure formation, showing a $\text{negative}$ correlation between their concentration and large-scale bias at $\text{all}$ masses. In contrast, haloes in anisotropic, filament-like environments (${\alpha }_R\gtrsim 0.5$) tend to show a $\text{positive}$ correlation between bias and concentration at any mass. Our multi-scale analysis cleanly demonstrates how the overall assembly bias trend across halo mass emerges as an average over these different halo populations, and provides valuable insights towards building analytical models that correctly incorporate assembly bias. We also discuss potential implications for the nature and detectability of galaxy assembly bias.

19 pages, 15 figures; v2: revised in response to referee comments, added references and discussion, conclusions unchanged. Accepted in MNRAS

References in corpus (22)

• Properties of Dark Matter Haloes in Clusters, Filaments, Sheets and Voids
• The spin and shape of dark matter haloes in the Millennium simulation of a LambdaCDM universe
• A universal model for halo concentrations
• Gravity and Large-Scale Non-local Bias
• Understanding higher-order nonlocal halo bias at large scales by combining the power spectrum with the bispectrum
• The dependence of dark halo clustering on the formation epoch and the concentration parameter
• ELUCID - Exploring the Local Universe with reConstructed Initial Density field III: Constrained Simulation in the SDSS Volume
• Non-local Lagrangian bias
• The Dipole Repeller
• Environmental dependence in the ellipsoidal collapse model
• Large-scale assembly bias of dark matter halos
• Strong clustering of underdense regions and the environmental dependence of clustering from Gaussian initial conditions
• Observational evidence of galaxy assembly bias
• Relativistic distortions in the large-scale clustering of SDSS-III BOSS CMASS galaxies
• Dependence of halo bias on mass and environment
• The Cosmic V-Web
• Revealing the cosmic web dependent halo bias
• Halo assembly bias from Separate Universe simulations
• ZOMG II: Does the halo assembly history influence central galaxies and gas accretion?
• Excursion set peaks: the role of shear
• ZOMG III: The effect of Halo Assembly on the Satellite Population
• Consistency relations for the Lagrangian halo bias and their implications

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