Baryon Acoustic Oscillations in the Ly-α forest of BOSS quasars

Abstract

We report a detection of the baryon acoustic oscillation (BAO) feature in the three-dimensional correlation function of the transmitted flux fraction in the \Lya forest of high-redshift quasars. The study uses 48,640 quasars in the redshift range $2.1\le z\le 3.5$ from the Baryon Oscillation Spectroscopic Survey (BOSS) of the third generation of the Sloan Digital Sky Survey (SDSS-III). At a mean redshift $z=2.3$, we measure the monopole and quadrupole components of the correlation function for separations in the range $20\hMpc<r<200\hMpc$. A peak in the correlation function is seen at a separation equal to $(1.01\pm 0.03)$ times the distance expected for the BAO peak within a concordance $\Lambda$CDM cosmology. This first detection of the BAO peak at high redshift, when the universe was strongly matter dominated, results in constraints on the angular diameter distance $\da$ and the expansion rate $H$ at $z=2.3$ that, combined with priors on $H_0$ and the baryon density, require the existence of dark energy. Combined with constraints derived from Cosmic Microwave Background (CMB) observations, this result implies $H(z=2.3)=(224\pm 8)\mathrm{km}{\mathrm{s}}^{-1}\mathrm{Mp}{\mathrm{c}}^{-1}$, indicating that the time derivative of the cosmological scale parameter $\dot{a}=H(z=2.3)/(1+z)$ is significantly greater than that measured with BAO at $z\sim 0.5$. This demonstrates that the expansion was decelerating in the range $0.7<z<2.3$, as expected from the matter domination during this epoch. Combined with measurements of $H_0$, one sees the pattern of deceleration followed by acceleration characteristic of a dark-energy dominated universe.

arXiv commentaccepted for publication in Astronomy and Astrophysics

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• The C IV forest as a probe of baryon acoustic oscillations
• The ACCEL2 Project: Precision Measurements of EFT Parameters and BAO Peak Shifts for the Lyman-$\alpha$ Forest
• Impact of Massive Neutrinos and Dark Radiation on the High-redshift Cosmic Web. I. Lyman-Alpha Forest Observables
• Reconstruction of cosmological matter perturbations in Modified Gravity
• Spectroscopic QUasar Extractor and redshift (z) EstimatorSQUEzE I: Methodology
• A Reconstruction of Quintessence Dark Energy
• The Reconstruction of Constant Jerk Parameter with $f(R,T)$ Gravity in Bianchi-I spacetime
• Weak lensing of the Lyman-alpha forest
• Cosmological Constraints on Scalar Field Dark Matter
• Noise Estimates for Measurements of Weak Lensing from the Lyman-alpha Forest
• Light mass galileon and late time acceleration of the Universe
• Predictions for BAO distance estimates from the cross-correlation of the Lyman-alpha forest and redshifted 21-cm emission
• On the luminosity distance and the epoch of acceleration
• Quasar -- CIV forest cross-correlation with SDSS DR12
• Detecting baryon acoustic oscillations by 3d weak lensing
• Using the redshift evolution of the Lyman-$\alpha$ effective opacity as a probe of dark matter models
• Null tests with Gaussian Process
• LyMAS reloaded: improving the predictions of the large-scale Lyman-α forest statistics from dark matter density and velocity fields
• Spherically Symmetric N-body Simulations with General Relativistic Dynamics
• Bianchi type-V Transitioning model in Brans-Dicke theory with Observational Constraint
• Observational Constraints on the Dark Energy with a Quadratic Equation of State
• Stability, dark energy parameterization and swampland aspect of Bianchi Type-$V{I}_h$ cosmological models with f(R, T)-gravity
• Direct reconstruction of dynamical dark energy from observational Hubble parameter data
• Implications on the cosmic coincidence by a dynamical extrinsic curvature
• Constraining the Halo Mass of Damped Ly$\alpha$ Absorption Systems (DLAs) at $z=2-3.5$ using the Quasar-CMB Lensing Cross-correlation
• Radiation-pressure Waves and Multiphase Quasar Outflows
• Predictions for measuring the cross power spectrum of the HI 21-cm signal and the Lyman-$\alpha$ forest using OWFA
• Cosmological Boundary Flux Parameter
• Dodging the dark matter degeneracy while determining the dynamics of dark energy
• Cosmological constraints on dark energy
• Constraining Mixed Dark Matter models with high redshift Lyman-alpha forest data
• Low-Redshift Constraints on Covariant Canonical Gauge Theory of Gravity
• Revisiting GeV-scale annihilating dark matter with the AMS-02 positron fraction
• Hubble constant by natural selection: Evolution chips in the Hubble tension
• Black hole virial masses from single-epoch photometry: the miniJPAS test case
• Smoothing expansion rate data to reconstruct cosmological matter perturbations
• Large-scale fluctuations in the cosmic ionising background: the impact of beamed source emission
• Interacting warm dark matter
• Modified Equations of State for Dark Energy and Observational Limitations
• Distinguish the $f(T)$ model from $\Lambda$CDM model with Gravitational Wave observations
• Model Selection with Baryonic Acoustic Oscillations in the Lyman-alpha Forest
• Reconstructing equation of state of dark energy with principal component analysis
• Perturbations in Tachyon Dark Energy and their Effect on Matter Clustering
• Constraints on Cosmological Models from Hubble Parameters Measurements
• The interaction of extended Bose-Einstein condensate dark matter with viscous $f(T,B)$ gravity
• Modeling Lyman-α Forest Cross-Correlations with LyMAS
• What have we learned from observational cosmology ?
• The Lyman-beta forest as a cosmic thermometer
• Probing large-scale structure with large samples of X-ray selected AGN: I Baryonic acoustic oscillations
• Posing Constraints on the Free Parameters of a New Model of Dark Energy EoS : Responses Through Cosmological Behaviours
• On the limitations of statistical absorption studies with the Sloan Digital Sky Surveys I--III
• Non minimally coupled condensate cosmologies: matching observational data with phase space
• A More Accurate and Competitive Estimative of $H_0$ in Intermediate Redshifts
• Observational constraints on the growth index parameters in $f(Q)$ gravity
• A possible role for the merger of clusters/voids in the cosmological expansion
• CCDM Model with Spatial Curvature and The Breaking of "Dark Degeneracy"
• Cosmological constraints on galaxy cluster structure
• Analysis cosmological tachyon and fermion model and observation data constraints
• Probing Inhomogeneity in the Helium Ionizing UV Background
• Ly$\alpha$NNA: A Deep Learning Field-level Inference Machine for the Lyman-$\alpha$ Forest
• Tachyon field non-minimally coupled to massive neutrino matter
• Baryon acoustic oscillations with the cross-correlation of spectroscopic and photometric samples
• Cosmic void exclusion models and their impact on the distance scale measurements from large scale structure
• Constraining deceleration, jerk and transition redshift using cosmic chronometers, Type Ia supernovae and ISW effect
• A new parametrization of Hubble function and Hubble tension
• Can the coincidence problem be solved by a cosmological model of coupled dark energy and dark matter?
• Observational constraints using Bayesian statistics and Deep Learning in $f(Q)$ gravity
• Eternal vs singular observers in interacting dark energy-dark matter models
• Holography and matter creation revisited
• Barrow holographic dark energy interacting model in the presence of radiation and matter
• Reconstructing the Gravitational Lensing Potential from the Lyman-$\alpha$ Forest
• Optimizing BAO measurements with non-linear transformations of Lyman-alpha forest
• Lyra's cosmology of homogeneous and isotropic universe in Brans-Dicke theory
• Origin of Metals around Galaxies I: Catalogs of Metal-line Absorption Doublets from High-Resolution Quasar Spectra
• Observational constraints on cosmological parameters in the Bianchi type III Universe with f(R,T) gravity theory
• Reconstructing HI power spectrum with minimal parameters using the dark matter distribution beyond halos
• Anisotropic cosmology in Bumblebee gravity theory
• The Compressed 3D Lyman-Alpha Forest Bispectrum
• Hubble Tension and Dark Energy in Teleparallel Gauss-Bonnet Gravity: New Constraints from DESI BAO, Pantheon${}^{+}$ and Hubble Data
• Observational constraints in late time for an axially symmetric transitioning model with bulk viscous fluid
• Exploring the expansion of the universe using the Grüneisen parameter
• Giant monopoles as a dark matter candidate
• Cosmic expansion beyond $\Lambda$CDM: Investigating power-law and logarithmic corrections
• A Dynamic Dark Information Energy Consistent with Planck Data
• Dark Energy Survey: DESI-Independent Angular BAO Measurement
• Reconstructing cosmic evolution with a density parametrization
• Model-independent reconstruction of the cosmological scale factor as a function of lookback time
• The Lyman-alpha Forest as a tool for disentangling non-Gaussianities
• Degeneracy and Discreteness in Cosmological Model Fitting
• ForestFlow: predicting the Lyman-$\alpha$ forest clustering from linear to nonlinear scales
• Improved source classification and performance analysis using Gaia DR3
• On Direct Estimation of Density Parameters and Hubble Constant for $\Lambda$CDM Universe using Hubble Measurements
• On the possibility of Baryon Acoustic Oscillation measurements at redshift $z>7.6$ with the Roman Space Telescope
• The Hubble flow: an observer's perspective
• Mimetic Tensor-Vector-Scalar Cosmology: Incorporating Dark Matter, Dark Energy and Stiff Matter
• The miniJPAS survey quasar selection IV: Classification and redshift estimation with SQUEzE
• 3D Correlations in the Lyman-$\alpha$ Forest from Early DESI Data
• Background power subtraction in Lyman-alpha forest
• An Alternative Approach to the Exact Solution of FRW-Type Spacetime with a Generalized Chaplygin Gas
• The equation and solution of 4-point correlation function of galaxies in Gaussian approximation and its parity-odd part
• Accelerating Universe with binary mixture of bulk viscous fluid and dark energy
• Observational Constraints on Chaplygin Gas Models in Non-Minimally Coupled Power Law $f(Q)$ Gravity with Quasars
• Ricci-Cubic Holographic Dark Energy: Confronting Observations, Stability and the Cosmic Coincidence Problem
• The Lyman-$\alpha$ Forest from LBGs: First 3D Correlation Measurement with DESI and Prospects for Cosmology
• Modeling the Cosmological Lyman-$\alpha$ Forest at the Field Level
• Quintessence dark energy model in non-linear $f(Q)$ theory with bulk-viscosity
• Finding Possibility of Dynamical Dark Energy with Hubble Parameters
• Accelerating BAO Scale Fitting Using Taylor Series
• Characterizing the Lyman-$\alpha$ flux probability distribution function using Legendre polynomials
• The Effect of Interstellar Absorption on Measurements of the Baryon Acoustic Peak in the Lyman-α Forest
• An Overview of CHIME, the Canadian Hydrogen Intensity Mapping Experiment
• Exploring the constraints on cosmological models with CosmoEJS
• Bridging Simulations and EFT: A Hybrid Model of the Lyman-Alpha Forest Field
• Generation of Lognormal Synthetic Lyman-$\alpha$ Forest Spectra for $P_{1D}$ Analysis
• Optimal data compression for Lyman-$\alpha$ forest cosmology
• Streaming Velocity Effects on the Post-reionization 21 cm Baryon Acoustic Oscillation Signal
• The nonlinear equation of correlation function of galaxies in the expanding universe and the solution in linear approximation
• Lya2pcf: an efficient pipeline to estimate two- and three-point correlation functions of the Lyman-$\alpha$ forest