HYMALAIA: A Hybrid Lagrangian Model for Intrinsic Alignments

Abstract

The intrinsic alignment of galaxies is an important ingredient for modelling weak-lensing measurements, and a potentially valuable cosmological and astrophysical signal. In this paper, we present HYMALAIA: a new model to predict the intrinsic alignments of biased tracers. HYMALAIA is based on a perturbative expansion of the statistics of the Lagrangian shapes of objects, which is then advected to Eulerian space using the fully non-linear displacement field obtained from $N$-body simulations. We demonstrate that HYMALAIA is capable of consistently describing monopole and quadrupole of halo shape-shape and matter-shape correlators, and that, without increasing the number of free parameters, it does so more accurately than other perturbatively inspired models such as the non-linear alignment (NLA) model and the tidal-alignment-tidal-torquing (TATT) model.

arXiv comment17 pages, 9 figures. Accepted version published in MNRAS

References in corpus (99)

• The cosmological simulation code GADGET-2
• MultiNest: an efficient and robust Bayesian inference tool for cosmology and particle physics
• Stable clustering, the halo model and nonlinear cosmological power spectra
• Large-Scale Structure of the Universe and Cosmological Perturbation Theory
• Multimodal nested sampling: an efficient and robust alternative to MCMC methods for astronomical data analysis
• X-ray spectral modelling of the AGN obscuring region in the CDFS: Bayesian model selection and catalogue
• Observational Probes of Cosmic Acceleration
• Dark Energy Survey Year 3 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
• Revising the Halofit Model for the Nonlinear Matter Power Spectrum
• Wide-Field InfrarRed Survey Telescope-Astrophysics Focused Telescope Assets WFIRST-AFTA 2015 Report
• Importance Nested Sampling and the MultiNest Algorithm
• Large-Scale Galaxy Bias
• KiDS-1000 Cosmology: Cosmic shear constraints and comparison between two point statistics
• KiDS-1000 Cosmology: Multi-probe weak gravitational lensing and spectroscopic galaxy clustering constraints
• Cosmological Non-Linearities as an Effective Fluid
• The Effective Field Theory of Cosmological Large Scale Structures
• Intrinsic alignment-lensing interference as a contaminant of cosmic shear
• Cosmology with cosmic shear observations: a review
• Dark energy constraints from cosmic shear power spectra: impact of intrinsic alignments on photometric redshift requirements
• Weak Gravitational Lensing by Large-Scale Structure
• The effects of galaxy formation on the matter power spectrum: A challenge for precision cosmology
• Intrinsic and Extrinsic Galaxy Alignment
• Gravitational Lensing
• Weak Gravitational Lensing and its Cosmological Applications
• Weak lensing for precision cosmology
• Cosmology with Weak Lensing Surveys
• Galaxy alignments: An overview
• Discriminating weak lensing from intrinsic spin correlations using the curl-gradient decomposition
• Beyond linear galaxy alignments
• Hyper Suprime-Cam Year 3 Results: Cosmology from Cosmic Shear Power Spectra
• Dark Quest. I. Fast and Accurate Emulation of Halo Clustering Statistics and Its Application to Galaxy Clustering
• Renormalized Halo Bias
• The BACCO Simulation Project: Exploiting the full power of large-scale structure for cosmology
• Cosmological $N$-body simulations with suppressed variance
• Potential sources of contamination to weak lensing measurements: constraints from N-body simulations
• The impact of baryons on the matter power spectrum from the Horizon-AGN cosmological hydrodynamical simulation
• Calibrating the Nonlinear Matter Power Spectrum: Requirements for Future Weak Lensing Surveys
• Clustering of dark matter tracers: renormalizing the bias parameters
• Galaxy alignments: Observations and impact on cosmology
• Modelling baryonic feedback for survey cosmology
• Galaxy alignments: Theory, modelling and simulations
• DES Y3 + KiDS-1000: Consistent cosmology combining cosmic shear surveys
• Tidal alignment of galaxies
• CosmoDC2: A Synthetic Sky Catalog for Dark Energy Science with LSST
• Imprint of inflation on galaxy shape correlations
• A Consistent Effective Theory of Long-Wavelength Cosmological Perturbations
• Modeling baryonic physics in future weak lensing surveys
• Accounting for baryonic effects in cosmic shear tomography: Determining a minimal set of nuisance parameters using PCA
• Galaxy Shapes and Intrinsic Alignments in The MassiveBlack-II Simulation
• The halo model as a versatile tool to predict intrinsic alignments
• Analytic Prediction of Baryonic Effects from the EFT of Large Scale Structures
• The LSST Dark Energy Science Collaboration (DESC) Science Requirements Document
• The cosmology dependence of galaxy clustering and lensing from a hybrid $N$-body-perturbation theory model
• An EFT description of galaxy intrinsic alignments
• Intrinsic galaxy shapes and alignments II: Modelling the intrinsic alignment contamination of weak lensing surveys
• UNIT project: Universe $N$-body simulations for the Investigation of Theoretical models from galaxy surveys
• Intrinsic galaxy shapes and alignments I: Measuring and modelling COSMOS intrinsic galaxy ellipticities
• Simulations and symmetries
• FAST-PT II: an algorithm to calculate convolution integrals of general tensor quantities in cosmological perturbation theory
• DES Y3 cosmic shear down to small scales: constraints on cosmology and baryons
• General Requirements on Matter Power Spectrum Predictions for Cosmology with Weak Lensing Tomography
• Multitracing Anisotropic Non-Gaussianity with Galaxy Shapes
• Tidal alignments as a contaminant of redshift space distortions
• Halo Shapes From Weak Lensing: The Impact of Galaxy--Halo Misalignment
• Statistical properties of paired fixed fields
• The BACCO simulation project: biased tracers in real space
• Primordial Gravitational Waves from Galaxy Intrinsic Alignments
• Improving geometric and dynamical constraints on cosmology with intrinsic alignments of galaxies
• Power spectrum of halo intrinsic alignments in simulations
• Time evolution of intrinsic alignments of galaxies
• 3\%-accurate predictions for the clustering of dark matter, haloes and subhaloes, over a wide range of cosmologies and scales
• Non-universality of the mass function: dependence on the growth rate and power spectrum shape
• The Bacco Simulation Project: Bacco Hybrid Lagrangian Bias Expansion Model in Redshift Space
• Priors on red galaxy stochasticity from hybrid effective field theory
• Priors on Lagrangian bias parameters from galaxy formation modelling
• Tightening geometric and dynamical constraints on dark energy and gravity: galaxy clustering, intrinsic alignment and kinetic Sunyaev-Zel'dovich effect
• Imprint of anisotropic primordial non-Gaussianity on halo intrinsic alignments in simulations
• Measuring the Tidal Response of Structure Formation: Anisotropic Separate Universe Simulations using TreePM
• Cosmological simulation in tides: power spectra and halo shape responses, and shape assembly bias
• Intrinsic galaxy alignment from angular dependent primordial non-Gaussianity
• Galaxy shape statistics in the effective field theory
• First Constraints on Growth Rate from Redshift-Space Ellipticity Correlations of SDSS Galaxies at $0.16<z<0.70$
• Modeling Nearest Neighbor distributions of biased tracers using Hybrid Effective Field Theory
• Modeling Intrinsic Galaxy Alignment in the MICE Simulation
• Suppressing cosmic variance with paired-and-fixed cosmological simulations: average properties and covariances of dark matter clustering statistics
• Redshift requirements for cosmic shear with intrinsic alignment
• Field-level inference of galaxy intrinsic alignment from the SDSS-III BOSS survey
• Modelling galaxy clustering in redshift space with a Lagrangian bias formalism and $N$-body simulations
• Cosmological Vlasov-Poisson equations for dark matter: Recent developments and connections to selected plasma problems
• Quadratic shape biases in three-dimensional halo intrinsic alignments
• Statistics of biased tracers in variance-suppressed simulations
• Renormalisation of linear halo bias in N-body simulations
• Lagrangian approach to super-sample effects on biased tracers at field level: galaxy density fields and intrinsic alignments
• The impact of Self-Interacting Dark Matter on the Intrinsic Alignments of Galaxies
• The halo model with beyond-linear halo bias: unbiasing cosmological constraints from galaxy-galaxy lensing and clustering
• Intrinsic Alignment as an RSD Contaminant in the DESI Survey
• Accuracy requirements on intrinsic alignments for Stage-IV cosmic shear
• The alignment of galaxies at the Baryon Acoustic Oscillation scale
• An Empirical Model For Intrinsic Alignments: Insights From Cosmological Simulations

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• A rising tide: Intrinsic alignments since the turn of the millennium
• Squeezing Full-Shape Dynamical Dark Energy Constraints with Galaxy Alignments
• Probabilistic Estimators of Lagrangian Shape Biases: Universal Relations and Physical Insights
• 6x2pt: Forecasting gains from joint weak lensing and galaxy clustering analyses with spectroscopic-photometric galaxy cross-correlations
• Parity Violation in Galaxy Shapes: Primordial Non-Gaussianity
• Three-point intrinsic alignments of galaxies and haloes in the FLAMINGO simulations