Large-scale BAO signatures of the smallest galaxies

Abstract

Recent work has shown that at high redshift, the relative velocity between dark matter and baryonic gas is typically supersonic. This relative velocity suppresses the formation of the earliest baryonic structures like minihalos, and the suppression is modulated on large scales. This effect imprints a characteristic shape in the clustering power spectrum of the earliest structures, with significant power on 100 Mpc scales featuring highly pronounced baryon acoustic oscillations. The amplitude of these oscillations is orders of magnitude larger at z=20 than previously expected. This characteristic signature can allow us to distinguish the effects of minihalos on intergalactic gas at times preceding and during reionization. We illustrate this effect with the example of 21 cm emission and absorption from redshifts during and before reionization. This effect can potentially allow us to probe physics on kpc scales using observations on 100 Mpc scales. We present sensitivity forecasts for FAST and Arecibo. Depending on parameters, this enhanced structure may be detectable by Arecibo at redshifts near z=15-20, and with appropriate instrumentation FAST could measure the BAO power spectrum with high precision. In principle, this effect could also pose a serious challenge for efforts to constrain dark energy using observations of the BAO feature at low redshift.

arXiv comment9 pages, 5 figures

References in corpus (21)

• Efficient Computation of CMB anisotropies in closed FRW models
• Ellipsoidal collapse and an improved model for the number and spatial distribution of dark matter haloes
• Cosmology at Low Frequencies: The 21 cm Transition and the High-Redshift Universe
• How small were the first cosmological objects?
• Observational constraints on Cosmic Reionization
• 21-cm Tomography of the Intergalactic Medium at High Redshift
• Effect of Reionization on the Structure Formation in the Universe
• Relative velocity of dark matter and baryonic fluids and the formation of the first structures
• On the Robustness of the Acoustic Scale in the Low-Redshift Clustering of Matter
• Probing the Universe with the Lyman-alpha Forest: I. Hydrodynamics of the Low Density IGM
• A Review of Bondi--Hoyle--Lyttleton Accretion
• The formation of the first stars and galaxies
• The first WIMPy halos
• Early Cosmological HII/HeIII Regions and Their Impact on Second-Generation Star Formation
• Feedback from Galaxy Formation: Production and Photodissociation of Primordial Molecular Hydrogen
• The Kinetic Sunyaev-Zel'dovich Effect from Reionization
• Reconstructing Patchy Reionization from the Cosmic Microwave Background
• Pulsar science with the Five hundred metre Aperture Spherical Telescope
• The Baryon Oscillation Spectroscopic Survey: Precision measurements of the absolute cosmic distance scale
• Galaxy surveys, inhomogeneous reionization, and dark energy
• On the peculiar momentum of baryons after Reionization

Cited by in corpus (102)

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• The trouble with $H_0$
• Hydrogen Epoch of Reionization Array (HERA)
• Possible interaction between baryons and dark-matter particles revealed by the first stars
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• Measurement of BAO correlations at $z=2.3$ with SDSS DR12 \lya-Forests
• Gravity and Large-Scale Non-local Bias
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in Fourier-space
• Data Analysis for Precision 21 cm Cosmology
• Signature of Excess Radio Background in the 21-cm Global Signal and Power Spectrum
• The GMRT-EoR Experiment: A new upper limit on the neutral hydrogen power spectrum at z~8.6
• Impact of the Relative Motion between the Dark Matter and Baryons on the First Stars
• The signature of the first stars in atomic hydrogen at redshift 20
• Constraining Baryon--Dark Matter Scattering with the Cosmic Dawn 21-cm Signal
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• HERA Phase I Limits on the Cosmic 21-cm Signal: Constraints on Astrophysics and Cosmology During the Epoch of Reionization
• The Delay of Population III Star Formation by Supersonic Streaming Velocities
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• Eliminating the optical depth nuisance from the CMB with 21 cm cosmology
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• The Rise of the First Stars: Supersonic Streaming, Radiative Feedback, and 21-cm Cosmology
• Simulations of Early Baryonic Structure Formation with Stream Velocity: II. The Gas Fraction
• Probing the Small-Scale Matter Power Spectrum with Large-Scale 21-cm Data
• 21-cm Fluctuations from Charged Dark Matter
• Peak-Background Split, Renormalization, and Galaxy Clustering
• Simulations of Early Baryonic Structure Formation with Stream Velocity: I. Halo Abundance
• The formation of massive black holes in z~30 dark matter haloes with large baryonic streaming velocities
• The Formation of the First Massive Black Holes
• Tight Constraints on the Excess Radio Background at $z=9.1$ from LOFAR
• A tale of two sites -- I: Inferring the properties of minihalo-hosted galaxies from current observations
• The rich complexity of 21-cm fluctuations produced by the first stars
• The effect of relative velocity and density perturbations between baryons and dark matter on the clustering of galaxies
• Complete history of the observable 21-cm signal from the first stars during the pre-reionization era
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• Emulating the Global 21-cm Signal from Cosmic Dawn and Reionization
• Robust Velocity-induced Acoustic Oscillations at Cosmic Dawn
• Higher-order initial conditions for mixed baryon-CDM simulations
• A Standard Ruler at Cosmic Dawn
• On the signature of the baryon-dark matter relative velocity in the two and three-point galaxy correlation functions
• Unveiling dark fifth forces with linear cosmology
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• Modeling the large-scale redshift-space 3-point correlation function of galaxies
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• Charting the Parameter Space of the 21-cm Power Spectrum
• Streaming velocities and the baryon-acoustic oscillation scale
• Globular Clusters and Dark Satellite Galaxies through the Stream Velocity
• An Effective Model for the Cosmic-Dawn 21-cm Signal
• Supersonic Relative Velocity between Dark Matter and Baryons: A Review
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• The 21-cm BAO signature of enriched low-mass galaxies during cosmic reionization
• Impact of baryonic streaming velocities on the formation of supermassive black holes via direct collapse
• Power spectra in the eikonal approximation with adiabatic and non-adiabatic modes
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• Biased Tracers of Two Fluids in the Lagrangian Picture
• Low-mass suppression of the satellite luminosity function due to the supersonic baryon--cold-dark-matter relative velocity
• The effect of baryonic streaming motions on the formation of the first supermassive black holes
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• The Supersonic Project: Shining Light on SIGOs - a New Formation Channel for Globular Clusters
• Baryon history and cosmic star formation in non-Gaussian cosmological models: numerical simulations
• Baryon-CDM isocurvature galaxy bias with IllustrisTNG
• Redshift-space streaming velocity effects on the Lyman-$\alpha$ forest baryon acoustic oscillation scale
• A self-consistent semi-analytic model for Population III star formation in minihalos
• Linearization of homogeneous, nearly-isotropic cosmological models
• How Density Environment Changes the Influence of the Dark Matter-Baryon Streaming Velocity on the Cosmological Structure Formation
• Probing ultra-light axions with the 21-cm Signal during Cosmic Dawn
• New constraints on cosmological modified gravity theories from anisotropic three-point correlation functions of BOSS DR12 galaxies
• Signatures of First Stars in Galaxy Surveys: Multi-Tracer Analysis of the Supersonic Relative Velocity Effect and the Constraints from the BOSS Power Spectrum Measurements
• Unveiling dark forces with measurements of the Large Scale Structure of the Universe
• Constraining Warm Dark Matter and Pop III stars with the Global 21-cm Signal
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• The Supersonic Project: rotational effects of supersonic motions on the first structures in the Universe
• The role of Pop III stars and early black holes in the 21cm signal from Cosmic Dawn
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• Precise Measurement of the Reionization Optical Depth from The Global 21-cm Signal Accounting for Cosmic Heating
• A Model-Insensitive Baryon Acoustic Oscillation Feature in the 21 cm Signal from Reionization
• Measuring the cosmic expansion rate using 21-cm velocity acoustic oscillations
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• The Supersonic Project: To cool or not to cool Supersonically Induced Gas Objects (SIGOs)?
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• Formation of First Galaxies inside Density Peaks and Voids under the Influence of Dark Matter-Baryon Streaming Velocity, I: Initial Condition and Simulation Scheme
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• The Effects of Dark Matter Annihilation and Dark Matter-Baryon Velocity Offsets at Cosmic Dawn
• Luminosity Bias (II): The Cosmic Web of the First Stars
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• Non-Gaussianity in the Squeezed Three-Point Correlation from the Relativistic Effects
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