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

Abstract

We study the effect of the supersonic relative velocity between dark matter and baryons on large-scale galaxy clustering and derive the constraint on the relative velocity bias parameter from the Baryonic Oscillation Spectroscopic Survey (BOSS) power spectrum measurements. Recent work has shown that the relative velocity effect may have a dramatic impact on the star formation at high redshifts, if first stars are formed in minihalos around z~20, or if the effect propagates through secondary effects to stars formed at later redshifts. The relative velocity effect has particularly strong signatures in the large scale clustering of these sources, including the BAO position. Assuming that a small fraction of stars in low-redshift massive galaxies retain the memory of the primordial relative velocity effect, galaxy clustering measurements can be used to constrain the signatures of the first stars. Luminous red galaxies contain some of the oldest stars in the Universe and are ideally suited to search for this effect. Using the BOSS power spectrum measurements from the Sloan Data Release 9, in combination with Planck, we derive the upper limit on the fraction of the stars sensitive to relative velocity effect f_star<3.3% at the 95% confidence level in the CMASS galaxy sample. If additional galaxy sample not sensitive to the effect is available in a given survey, a joint multi-tracer analysis can be applied to construct a sample-variance cancelling combination, providing a model-independent way to verify the presence of the relative velocity effect in the galaxy power spectrum on large scales. Such a multi-tracer analysis in future galaxy surveys can greatly improve the current constraint, achieving a 0.1% level in f_star.

19 pages, 9 figures, accepted for publication in PRD

References in corpus (10)

• Cosmology at Low Frequencies: The 21 cm Transition and the High-Redshift Universe
• Measuring primordial non-gaussianity without cosmic variance
• Halo Stochasticity from Exclusion and non-linear Clustering
• Measuring the matter density using baryon oscillations in the SDSS
• Non-linear structure formation and the acoustic scale
• How to suppress the shot noise in galaxy surveys
• Large-scale BAO signatures of the smallest galaxies
• The Physics and Early History of the Intergalactic Medium
• Optimal Weighting in Galaxy Surveys: Application to Redshift-Space Distortions
• The WiggleZ Dark Energy Survey: small-scale clustering of Lyman Break Galaxies at z < 1

Cited by in corpus (25)

• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in the Data Release 10 and 11 galaxy samples
• Large-Scale Galaxy Bias
• The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: First measurement of Baryon Acoustic Oscillations between redshift 0.8 and 2.2
• FAST-PT: a novel algorithm to calculate convolution integrals in cosmological perturbation theory
• The Rise of the First Stars: Supersonic Streaming, Radiative Feedback, and 21-cm Cosmology
• The effect of relative velocity and density perturbations between baryons and dark matter on the clustering of galaxies
• The BOSS-WiggleZ overlap region I: Baryon Acoustic Oscillations
• On the signature of the baryon-dark matter relative velocity in the two and three-point galaxy correlation functions
• Streaming velocities and the baryon-acoustic oscillation scale
• Modeling CMB Lensing Cross Correlations with {\sc CLEFT}
• Baryon Acoustic Oscillation Theory and Modelling Systematics for the DESI 2024 results
• The BOSS-WiggleZ overlap region II: dependence of cosmic growth on galaxy type
• Baryon-CDM isocurvature galaxy bias with IllustrisTNG
• Redshift-space streaming velocity effects on the Lyman-$\alpha$ forest baryon acoustic oscillation scale
• Small-scale structure and the Lyman-$\alpha$ forest baryon acoustic oscillation feature
• New constraints on cosmological modified gravity theories from anisotropic three-point correlation functions of BOSS DR12 galaxies
• Imprints of Reionization in Galaxy Clustering
• Effect of supersonic relative motion between baryons and dark matter on collapsed objects
• Dwarf galaxy formation with and without dark matter-baryon streaming velocities
• Dynamical friction in the primordial neutrino sea
• First test of the consistency relation for the large-scale structure using the anisotropic three-point correlation function of BOSS DR12 galaxies (An explanatory video is available at https://youtu.be/Zi36ooLPhss.)
• Relative baryon-dark matter velocities in cosmological zoom simulations
• Cosmic voids and BAO with relative baryon-CDM perturbations
• Non-Gaussianity in the Squeezed Three-Point Correlation from the Relativistic Effects