Intrinsic alignments of galaxies around cosmic voids

Abstract

The intrinsic alignments of galaxies, i.e., the correlation between galaxy shapes and their environment, are a major source of contamination for weak gravitational lensing surveys. Most studies of intrinsic alignments have so far focused on measuring and modelling the correlations of luminous red galaxies with galaxy positions or the filaments of the cosmic web. In this work, we investigate alignments around cosmic voids. We measure the intrinsic alignments of luminous red galaxies detected by the Sloan Digital Sky Survey around a sample of voids constructed from those same tracers and with radii in the ranges: $[20-30;30-40;40-50]$ $h^{-1}$ Mpc and in the redshift range $z=0.4-0.8$. We present fits to the measurements based on a linear model at large scales, and on a new model based on the void density profile inside the void and in its neighbourhood. We constrain the free scaling amplitude of our model at small scales, finding no significant alignment at $1\sigma$ for either sample. We observe a deviation from the null hypothesis, at large scales, of 2$\sigma$ for voids with radii between 20 and 30 $h^{-1}$ Mpc, and 1.5 $\sigma$ for voids with radii between 30 and 40 $h^{-1}$ Mpc and constrain the amplitude of the model on these scales. We find no significant deviation at 1$\sigma$ for larger voids. Our work is a first attempt at detecting intrinsic alignments of galaxy shapes around voids and provides a useful framework for their mitigation in future void lensing studies.

arXiv comment11 pages, 8 figures, matches accepted version

References in corpus (71)

• LSST: from Science Drivers to Reference Design and Anticipated Data Products
• The Cosmic Linear Anisotropy Solving System (CLASS) II: Approximation schemes
• SDSS-III: Massive Spectroscopic Surveys of the Distant Universe, the Milky Way Galaxy, and Extra-Solar Planetary Systems
• Halo Models of Large Scale Structure
• The Hyper Suprime-Cam SSP Survey: Overview and Survey Design
• Cosmology and Fundamental Physics with the Euclid Satellite
• Intrinsic alignment-lensing interference as a contaminant of cosmic shear
• Shapes and Shears, Stars and Smears: Optimal Measurements for Weak Lensing
• Intrinsic and Extrinsic Galaxy Alignment
• The Kilo-Degree Survey
• ZOBOV: a parameter-free void-finding algorithm
• Core Cosmology Library: Precision Cosmological Predictions for LSST
• Intrinsic galaxy alignments from the 2SLAQ and SDSS surveys: luminosity and redshift scalings and implications for weak lensing surveys
• Detection of large scale intrinsic ellipticity-density correlation from the Sloan Digital Sky Survey and implications for weak lensing surveys
• Measurement of intrinsic alignments in galaxy ellipticities
• Intrinsic alignments of SDSS-III BOSS LOWZ sample galaxies
• Universal Density Profile for Cosmic Voids
• Constraints on Cosmology and Gravity from the Dynamics of Voids
• The WiggleZ Dark Energy Survey: Direct constraints on blue galaxy intrinsic alignments at intermediate redshifts
• A halo model for intrinsic alignments of galaxy ellipticities
• Optical-to-virial velocity ratios of local disk galaxies from combined kinematics and galaxy-galaxy lensing
• The impact of intrinsic alignment on current and future cosmic shear surveys
• Voids in massive neutrino cosmologies
• Testing the tidal alignment model of galaxy intrinsic alignment
• Massive Neutrinos Leave Fingerprints on Cosmic Voids
• Probing cosmology and gravity with redshift-space distortions around voids
• Detection of the effect of cosmological large-scale structure on the orientation of galaxies
• Imprint of inflation on galaxy shape correlations
• First measurement of gravitational lensing by cosmic voids in SDSS
• Cosmic Voids and Void Lensing in the Dark Energy Survey Science Verification Data
• Simulating nonlinear cosmological structure formation with massive neutrinos
• Past and present cosmic structure in the SDSS DR7 main sample
• Cosmology with Void-Galaxy Correlations
• Weak lensing by voids in modified lensing potentials
• The halo model as a versatile tool to predict intrinsic alignments
• Redshift-space distortions around voids
• Sparse sampling, galaxy bias, and voids
• Lensing Measurements of the Mass Distribution in SDSS Voids
• The VIMOS Public Extragalactic Redshift Survey: Measuring the growth rate of structure around cosmic voids
• Dark Energy Survey Year 1 Results: Constraints on Intrinsic Alignments and their Colour Dependence from Galaxy Clustering and Weak Lensing
• KiDS+GAMA: Intrinsic alignment model constraints for current and future weak lensing cosmology
• An EFT description of galaxy intrinsic alignments
• Cosmological Information in the Intrinsic Alignments of Luminous Red Galaxies
• The Weight of Emptiness: The Gravitational Lensing Signal of Stacked Voids
• Large-Scale Clustering of Cosmic Voids
• The orientation of disk galaxies around large cosmic voids
• The bias of cosmic voids in the presence of massive neutrinos
• On the linearity of tracer bias around voids
• Multitracing Anisotropic Non-Gaussianity with Galaxy Shapes
• Cosmic Web Reconstruction through Density Ridges: Method and Algorithm
• Void Lensing as a Test of Gravity
• Redshift and luminosity evolution of the intrinsic alignments of galaxies in Horizon-AGN
• Primordial Gravitational Waves from Galaxy Intrinsic Alignments
• Dark Energy Survey Year 1 results: The relationship between mass and light around cosmic voids
• Advances in Constraining Intrinsic Alignment Models with Hydrodynamic Simulations
• Cosmic voids: a novel probe to shed light on our Universe
• Galaxy imaging surveys as spin-sensitive detector for cosmological colliders
• Measuring the mass distribution of voids with stacked weak lensing
• Can weak lensing surveys confirm BICEP2 ?
• New constraints on the linear growth rate using cosmic voids in the SDSS DR12 datasets
• Weak lensing by voids in weak lensing maps
• Constraint of Void Bias on Primordial non-Gaussianity
• Clustering and Bias Measurements of SDSS Voids
• GAMA+KiDS: Alignment of galaxies in galaxy groups and its dependence on galaxy scale
• Alignment of galaxy spins in the vicinity of voids
• Fundamental Plane of BOSS galaxies: Correlations with galaxy properties, density field and impact on RSD measurements
• Measurement of Void Bias Using Separate Universe Simulations
• Separate Universe Void Bias
• First detection of the GI-type of intrinsic alignments of galaxies using the self-calibration method in a photometric galaxy survey
• Environmental dependence of ellipticity correlation functions of intrinsic alignments
• Weighing the Neutrinos with the Galaxy Shape-Shape Correlations

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• An empirical consistent redshift bias: A possible direct reproducible observation of Zwicky's TL theory
• A rising tide: Intrinsic alignments since the turn of the millennium
• Spin alignment around TNG300-1 voids
• A simple direct empirical observation of systematic bias of the redshift as a distance indicator
• Ringing the universe with cosmic emptiness: void properties through a combined analysis of stacked weak gravitational and Doppler lensing