Imprint of anisotropic primordial non-Gaussianity on halo intrinsic alignments in simulations

Abstract

Using $N$-body simulations of cosmological large-scale structure formation, for the first time, we show that the anisotropic primordial non-Gaussianity (PNG) causes a scale-dependent modification, given by $1/k^2$ at small $k$ limit, in the three-dimensional power spectra of halo shapes (intrinsic alignments), whilst the conventional power spectrum of halo number density field remains unaffected. We discuss that wide-area imaging and spectrocopic surveys observing the same region of the sky allow us to constrain the quadrupole PNG coefficient $f_{\mathrm{NL}}^{s=2}$ at a precision comparable with or better than that of the cosmic microwave background.

9 pages, 4 figures; an accepted version for publication in PRD

References in corpus (11)

• The imprints of primordial non-gaussianities on large-scale structure: scale dependent bias and abundance of virialized objects
• Transients from Initial Conditions in Cosmological Simulations
• Measuring primordial non-gaussianity without cosmic variance
• Cosmological Collider Physics
• Non-Gaussianity as a Particle Detector
• Planck 2018 results. IX. Constraints on primordial non-Gaussianity
• The Weak Lensing Signal and the Clustering of BOSS Galaxies II: Astrophysical and Cosmological Constraints
• Multitracing Anisotropic Non-Gaussianity with Galaxy Shapes
• Scale-dependent bias from primordial non-Gaussianity in general relativity
• Anisotropic Magnification Distortion of the 3D Galaxy Correlation: II. Fourier and Redshift Space
• Power spectrum of halo intrinsic alignments in simulations

Cited by in corpus (22)

• Galaxy imaging surveys as spin-sensitive detector for cosmological colliders
• Power spectrum of halo intrinsic alignments in simulations
• Tightening geometric and dynamical constraints on dark energy and gravity: galaxy clustering, intrinsic alignment and kinetic Sunyaev-Zel'dovich effect
• Galaxy shape statistics in the effective field theory
• Constraints on anisotropic primordial non-Gaussianity from intrinsic alignments of SDSS-III BOSS galaxies
• Gravitational wave fossils in nonlinear regime: halo tidal bias and intrinsic alignments from gravitational wave separate universe simulations
• An Optimal Estimator of Intrinsic Alignments for Star-forming Galaxies in IllustrisTNG Simulation
• HYMALAIA: A Hybrid Lagrangian Model for Intrinsic Alignments
• Quadratic shape biases in three-dimensional halo intrinsic alignments
• Lagrangian approach to super-sample effects on biased tracers at field level: galaxy density fields and intrinsic alignments
• Analysis method for 3D power spectrum of projected tensor field with fast estimator and window convolution modelling: an application to intrinsic alignments
• Statistical anisotropy in galaxy ellipticity correlations
• Wide-angle effects on galaxy ellipticity correlations
• Integrated perturbation theory for cosmological tensor fields. I. Basic formulation
• Imprints of primordial magnetic fields on intrinsic alignments of galaxies
• Integrated perturbation theory for cosmological tensor fields. III. Projection effects
• Nonlinear redshift space distortion in halo ellipticity correlations: Analytical model and N-body simulations
• Extracting parity-violating gravitational waves from projected tidal force tensor in three dimensions
• A rising tide: Intrinsic alignments since the turn of the millennium
• Squeezing Full-Shape Dynamical Dark Energy Constraints with Galaxy Alignments
• Impacts of pre-initial conditions on anisotropic separate universe simulations: a boosted tidal response in the epoch of reionization
• Probing dipolar power asymmetry with galaxy clustering and intrinsic alignments