Squeezing Full-Shape Dynamical Dark Energy Constraints with Galaxy Alignments

Abstract

Recent $2-4\sigma$ deviations from the Cosmological Constant $\Lambda$ suggest that dark energy (DE) may be dynamical, based on baryon acoustic oscillations and full-shape galaxy clustering (FS GC) analyses. This calls for even tighter DE constraints to narrow down its true nature. In this Letter, we explore how galaxy intrinsic alignments (IA) can enhance the FS GC-based DE constraints, using Fisher forecasts on various extensions of dynamical DE models, including scenarios with curvature, massive neutrinos, and modified gravity. Incorporating IA improves the DE Figure-of-Merit by $42-57\%$ and tightens the primordial power spectrum amplitude constraints by $17-19\%$. Our findings highlight IA's potential as a valuable cosmological probe complementary to GC.

7 pages, 3 figures, 1 table. Accepted for publication in ApJL

References in corpus (57)

• Dynamics of dark energy
• Cosmological parameters from SDSS and WMAP
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
• Exploring the Expansion History of the Universe
• DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations
• The Hyper Suprime-Cam SSP Survey: Overview and Survey Design
• Massive neutrinos and cosmology
• Probing Dark Energy with Baryonic Acoustic Oscillations from Future Large Galaxy Redshift Surveys
• Cosmological implications of baryon acoustic oscillation (BAO) measurements
• A measurement of the cosmological mass density from clustering in the 2dF Galaxy Redshift Survey
• Extragalactic Science, Cosmology and Galactic Archaeology with the Subaru Prime Focus Spectrograph (PFS)
• Quintessence: A Review
• A test of the nature of cosmic acceleration using galaxy redshift distortions
• Intrinsic alignment-lensing interference as a contaminant of cosmic shear
• The 6dF Galaxy Survey: z \approx 0 measurement of the growth rate and sigma_8
• The WiggleZ Dark Energy Survey: the growth rate of cosmic structure since redshift z=0.9
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: measurements of the growth of structure and expansion rate at z=0.57 from anisotropic clustering
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: RSD measurement from the power spectrum and bispectrum of the DR12 BOSS galaxies
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: BAO and RSD measurements from anisotropic clustering analysis of the Quasar Sample in configuration space between redshift 0.8 and 2.2
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Testing gravity with redshift-space distortions using the power spectrum multipoles
• Intrinsic galaxy alignments from the 2SLAQ and SDSS surveys: luminosity and redshift scalings and implications for weak lensing surveys
• The Intrinsic Alignment of Galaxies and its Impact on Weak Gravitational Lensing in an Era of Precision Cosmology
• Detection of large scale intrinsic ellipticity-density correlation from the Sloan Digital Sky Survey and implications for weak lensing surveys
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in Fourier-space
• Discriminating weak lensing from intrinsic spin correlations using the curl-gradient decomposition
• The Subaru FMOS galaxy redshift survey (FastSound). IV. New constraint on gravity theory from redshift space distortions at $z\sim 1.4$
• Constraints on intrinsic alignment contamination of weak lensing surveys using the MegaZ-LRG sample
• The Clustering of Galaxies in the SDSS-III DR9 Baryon Oscillation Spectroscopic Survey: Testing Deviations from $\Lambda$ and General Relativity using anisotropic clustering of galaxies
• Beyond linear galaxy alignments
• Large-Scale Anisotropic Correlation Function of SDSS Luminous Red Galaxies
• Galaxy alignments: Observations and impact on cosmology
• Intrinsic Ellipticity Correlation of SDSS Luminous Red Galaxies and Misalignment with their Host Dark Matter Halos
• Updated Cosmological Constraints in Extended Parameter Space with Planck PR4, DESI Baryon Acoustic Oscillations, and Supernovae: Dynamical Dark Energy, Neutrino Masses, Lensing Anomaly, and the Hubble Tension
• Large-Scale Structure with Gravitational Waves II: Shear
• The VIMOS Public Extragalactic Redshift Survey: Measuring the growth rate of structure around cosmic voids
• An EFT description of galaxy intrinsic alignments
• Cosmological Information in the Intrinsic Alignments of Luminous Red Galaxies
• Deconstructing the neutrino mass constraint from galaxy redshift surveys
• Neutrino Mass, Dark Energy, and the Linear Growth Factor
• Forecasting the Cosmological Constraints with Anisotropic Baryon Acoustic Oscillations from Multipole Expansion
• 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
• Anisotropies of galaxy ellipticity correlations in real and redshift space: angular dependence in linear tidal alignment model
• 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
• Galaxy shape statistics in the effective field theory
• First Constraints on Growth Rate from Redshift-Space Ellipticity Correlations of SDSS Galaxies at $0.16<z<0.70$
• Power Spectrum of Intrinsic Alignments of Galaxies in IllustrisTNG
• Constraints on anisotropic primordial non-Gaussianity from intrinsic alignments of SDSS-III BOSS galaxies
• Field-level inference of galaxy intrinsic alignment from the SDSS-III BOSS survey
• Evidence for baryon acoustic oscillations from galaxy-ellipticity correlations
• HYMALAIA: A Hybrid Lagrangian Model for Intrinsic Alignments
• First Evidence of Intrinsic Alignments of Red Galaxies at $z>1$: Cross-correlation between CFHTLenS and FastSound Samples
• Imprints of primordial magnetic fields on intrinsic alignments of galaxies
• Nonlinear redshift space distortion in halo ellipticity correlations: Analytical model and N-body simulations
• Information content in anisotropic cosmological fields: Impact of different multipole expansion scheme for galaxy density and ellipticity correlations

Cited by in corpus (5)

• Cosmology in Extended Parameter Space with DESI Data Release 2 Baryon Acoustic Oscillations: A 2$\sigma$+ Detection of Nonzero Neutrino Masses with an Update on Dynamical Dark Energy and Lensing Anomaly
• Is Dark Energy Dynamical in the DESI Era? A Critical Review
• Cosmological constraints on nonphantom dynamical dark energy with DESI Data Release 2 Baryon Acoustic Oscillations: A 3$\sigma$+ lensing anomaly
• Improving cosmological constraints via galaxy intrinsic alignment in full-shape analysis
• Evidence for Intrinsic Galaxy Alignments in Ellipticity Autocorrelations out to $100h^{-1}\text{Mpc}$ from SDSS Galaxies with DESI Imaging