Imprints of primordial magnetic fields on intrinsic alignments of galaxies

Abstract

Primordial magnetic fields (PMFs) are one of the plausible candidates for the origin of the observed large-scale magnetic fields. While many proposals have been made for the generation mechanism of PMFs by earlier studies, it remains a subject of debate. In this paper, to obtain new insights into PMFs, we focus on the intrinsic alignments (IAs) of galaxies induced by the vector and tensor modes of the anisotropic stress of PMFs. The long-wavelength vector and tensor modes locally induce the tidal gravitational fields, leading to the characteristic distortions of the intrinsic ellipticity of galaxies. We investigate the shear E- and B-mode power spectra induced by the magnetic vector and tensor modes in the three-dimensional space, assuming the combination of galaxy imaging and galaxy redshift surveys. We find that the magnetic tensor mode dominates both the E- and B-mode spectra. In particular, the B-mode spectrum induced by the magnetic tensor mode plays a crucial role in constraining the amplitude of PMFs, even in the presence of the non-magnetic scalar contribution to the B-mode spectrum arising from the one-loop effect. In future galaxy redshift surveys, such as Euclid and Square Kilometre Array, the minimum detectable value reaches $\sim 30\mathrm{nG}$, which can potentially get even smaller in proportion to the number of observed galaxies and reach $\sim \mathcal{O}(1\mathrm{nG})$. Measuring the IAs of galaxies would be a potential probe for PMFs in future galaxy surveys.

17 pages, 7 figures

References in corpus (44)

• Intrinsic galaxy alignments from the 2SLAQ and SDSS surveys: luminosity and redshift scalings and implications for weak lensing surveys
• Magnetic fields from inflation?
• The Intrinsic Alignment of Galaxies and its Impact on Weak Gravitational Lensing in an Era of Precision Cosmology
• CMB anisotropies from primordial inhomogeneous magnetic fields
• Adding helicity to inflationary magnetogenesis
• An EFT description of galaxy intrinsic alignments
• Magnetic Fields from QCD Phase Transitions
• The Impact of Stochastic Primordial Magnetic Fields on the Scalar Contribution to Cosmic Microwave Background Anisotropies
• Primordial gravity wave fossils and their use in testing inflation
• Lensing Bias in Cosmic Shear
• Observable primordial vector modes
• Updated constraint on a primordial magnetic field during big bang nucleosynthesis and a formulation of field effects
• Magnetic field and gravitational waves from the first-order Phase Transition
• Improving geometric and dynamical constraints on cosmology with intrinsic alignments of galaxies
• Galaxy imaging surveys as spin-sensitive detector for cosmological colliders
• 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
• Weak Lensing of the Cosmic Microwave Background by Foreground Gravitational Waves
• Imprint of anisotropic primordial non-Gaussianity on halo intrinsic alignments in simulations
• Cosmological simulation in tides: power spectra and halo shape responses, and shape assembly bias
• Effects of power law primordial magnetic field on big bang nucleosynthesis
• First Constraints on Growth Rate from Redshift-Space Ellipticity Correlations of SDSS Galaxies at $0.16<z<0.70$
• Constraints on anisotropic primordial non-Gaussianity from intrinsic alignments of SDSS-III BOSS galaxies
• Magnetic field spectrum at cosmological recombination revisited
• Magnetic field generation from bubble collisions during first-order phase transition
• Revisiting Magnetogenesis during Inflation
• Gravitational wave fossils in nonlinear regime: halo tidal bias and intrinsic alignments from gravitational wave separate universe simulations
• Properties of the Intergalactic Magnetic Field Constrained by Gamma-ray Observations of Gamma-Ray Bursts
• Quadratic shape biases in three-dimensional halo intrinsic alignments
• First Evidence of Intrinsic Alignments of Red Galaxies at $z>1$: Cross-correlation between CFHTLenS and FastSound Samples
• Magnetic reheating
• Inflationary magnetogenesis with helical coupling
• Distinguishing between $\Lambda$CDM and $f(R)$ gravity models using halo ellipticity correlations in simulations
• Wide-angle effects on galaxy ellipticity correlations
• Statistical anisotropy in galaxy ellipticity correlations
• Relativistic distortions in galaxy density-ellipticity correlations: gravitational redshift and peculiar velocity effects
• Finding Evidence for Inflation and the Origin of Galactic Magnetic Fields with CMB Surveys
• Small-scale CMB anisotropies induced by the primordial magnetic fields
• Constraining primordial vector mode from B-mode polarization
• Effect of Magnetic Field Dissipation on Primordial Li Abundance
• A Lagrangian theory for galaxy shape statistics
• Distribution function of nuclei from $e^{\pm }$ scattering in the presence of a strong primordial magnetic field
• Constraining cosmological vorticity modes with CMB secondary anisotropies
• What can galaxy shapes tell us about physics beyond the standard model?

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• Improving cosmological constraints via galaxy intrinsic alignment in full-shape analysis
• First-order CP phase transition in two-flavor QCD at $\theta =\pi$ under electromagnetic scale anomaly via a Nambu-Jona-Lasinio description
• Three-point intrinsic alignments of galaxies and haloes in the FLAMINGO simulations
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