The Lyman-alpha forest and WMAP year three

Abstract

A combined analysis of Cosmic Microwave Background (CMB) and Lyman-a forest data allows to constrain the matter power spectrum from small scales of about 1 Mpc/h all the way to the horizon scale. The long lever arm and complementarity provided by such an analysis has previously led to a significant tightening of the constraints on the shape and the amplitude of the power spectrum of primordial density fluctuations. We present here a combined analysis of the WMAP three year results with Lyman-a forest data. The amplitude of the matter power spectrum sigma_8 and the spectral index ns inferred from the joint analysis with high resolution Lyman-a forest data and low resolution Lyman-a forest data as analyzed by Viel & Haehnelt (2006) are consistent with the new WMAP results to within 1 sigma. The joint analysis with the mainly low resolution data as analysed by McDonald et al. (2005) suggests a value of sigma_8 which is ~ 2 sigma higher than that inferred from the WMAP three year data alone. The joint analysis of the three year WMAP and the Lyman-a forest data also does not favour a running of the spectral index. The best fit values for a combined analysis of the three year WMAP data, other CMB data, 2dF and the Lyman-a forest data are (sigma_8, ns) = (0.78\pm 0.03,0.96 \pm 0.01).

5 pages, 4 figs, 2 tables. MNRAS letters in press

References in corpus (37)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• The cosmological simulation code GADGET-2
• Cosmological parameters from CMB and other data: a Monte-Carlo approach
• Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant
• GADGET: A code for collisionless and gasdynamical cosmological simulations
• Cosmological parameter analysis including SDSS Ly-alpha forest and galaxy bias: constraints on the primordial spectrum of fluctuations, neutrino mass, and dark energy
• Constraining Warm Dark Matter candidates including sterile neutrinos and light gravitinos with WMAP and the Lyman-alpha forest
• The 2dF Galaxy Redshift Survey: The power spectrum and the matter content of the universe
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Parameter Estimation Methodology
• The Lyman-alpha Forest Power Spectrum from the Sloan Digital Sky Survey
• Towards a Precise Measurement of Matter Clustering: Lyman-alpha Forest Data at Redshifts 2-4
• Recovery of the Power Spectrum of Mass Fluctuations from Observations of the Lyman-alpha Forest
• Probing the Universe with the Lyman-alpha Forest: I. Hydrodynamics of the Low Density IGM
• The Linear Theory Power Spectrum from the Lyman-alpha Forest in the Sloan Digital Sky Survey
• High Resolution Observations of the CMB Power Spectrum with ACBAR
• The Observed Probability Distribution Function, Power Spectrum, and Correlation Function of the Transmitted Flux in the Lyman-alpha Forest
• Extended Mosaic Observations with the Cosmic Background Imager
• Inferring the dark matter power spectrum from the Lyman-alpha forest in high-resolution QSO absorption spectra
• Toward a Measurement of the Cosmological Geometry at z~2: Predicting Lyman-alpha Forest Correlation in Three Dimensions, and the Potential of Future Data Sets
• High sensitivity measurements of the CMB power spectrum with the extended Very Small Array
• Cosmological parameters from CMB measurements and the final 2dFGRS power spectrum
• Cosmological and astrophysical parameters from the SDSS flux power spectrum and hydrodynamical simulations of the Lyman-alpha forest
• Matter Power Spectrum from the Lyman-Alpha Forest: Myth or Reality?
• Physical effects on the Lyman-alpha forest flux power spectrum: damping wings, ionizing radiation fluctuations, and galactic winds
• Linear Cosmological Structure Limits on Warm Dark Matter
• The power spectrum of the flux distribution in the Lyman-alpha forest of a Large sample of UVES QSO Absorption Spectra (LUQAS)
• The effects of UV background correlations on LyA forest flux statistics
• Constraints on the Primordial Power Spectrum from High Resolution Lyman-alpha Forest Spectra and WMAP
• Squeezing the window on isocurvature modes with the Lyman-alpha forest
• A Concordance Model of the Lyman-alpha Forest at z = 1.95
• Inferring the Linear Power Spectrum from the Lyman-alpha Forest
• Tightening Constraints from the Lyman Alpha Forest with the Flux Probability Distribution Function
• On Estimating the QSO Transmission Power Spectrum
• Testing the accuracy of the Hydro-PM approximation in numerical simulations of the Lyman-alpha forest
• The effect of (strong) discrete absorption systems on the lyman alpha forest flux power spectrum
• Dark energy effects on the Lyman-alpha forest
• Joint modeling of the probability distribution and power spectrum of the Lya forest: comparison with observations at z=3

Cited by in corpus (76)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Likelihoods and Parameters from the WMAP data
• Cosmological Constraints from the SDSS Luminous Red Galaxies
• Warm Dark Matter as a solution to the small scale crisis: new constraints from high redshift Lyman-alpha forest data
• Transients from Initial Conditions in Cosmological Simulations
• Effect of Primordial Black Holes on the Cosmic Microwave Background and Cosmological Parameter Estimates
• The morphology of HII regions during reionization
• The observed ionization rate of the intergalactic medium and the ionizing emissivity at z >5: Evidence for a photon starved and extended epoch of reionization
• DESI and other dark energy experiments in the era of neutrino mass measurements
• Cosmic dynamics in the era of Extremely Large Telescopes
• How cold is cold dark matter? Small scales constraints from the flux power spectrum of the high-redshift Lyman-alpha forest
• Inside-out or Outside-in: The topology of reionization in the photon-starved regime suggested by Lyman-alpha forest data
• The nature and evolution of the highly ionized near-zones in the absorption spectra of z~6 quasars
• Possible evidence for an inverted temperature-density relation in the intergalactic medium from the flux distribution of the Lyman-alpha forest
• Neutrino mass in cosmology: status and prospects
• An improved measurement of the flux distribution of the Ly-alpha forest in QSO absorption spectra: the effect of continuum fitting, metal contamination and noise properties
• New Constraints on Oscillations in the Primordial Spectrum of Inflationary Perturbations
• The neutrino mass bound from WMAP-3, the baryon acoustic peak, the SNLS supernovae and the Lyman-alpha forest
• Constraint on neutrino masses from SDSS-III/BOSS Ly$\alpha$ forest and other cosmological probes
• The Rise of the First Stars: Supersonic Streaming, Radiative Feedback, and 21-cm Cosmology
• On the formation of dwarf galaxies and stellar halos
• Intermediate inflation in light of the three-year WMAP observations
• Glimpsing through the high redshift neutral hydrogen fog
• The Physics and Early History of the Intergalactic Medium
• Observational bounds on the cosmic radiation density
• On the intergalactic temperature-density relation
• The First Stars in The Universe
• Fluctuations in 21cm Emission After Reionization
• Increasing the effective number of neutrinos with decaying particles
• The formation and gas content of high redshift galaxies and minihalos
• Implications of a Running Spectral Index for Slow Roll Inflation
• Numerical and Perturbative Computations of the Fuzzy Dark Matter Model
• An improved cosmological bound on the thermal axion mass
• New approach for precise computation of Lyman-alpha forest power spectrum with hydrodynamical simulations
• Neutrino masses and cosmic radiation density: Combined analysis
• Closing in on Resonantly Produced Sterile Neutrino Dark Matter
• MCMC analysis of WMAP3 and SDSS data points to broken symmetry inflaton potentials and provides a lower bound on the tensor to scalar ratio
• Signatures of reionization on Lyman alpha emitters
• Features in Dark Energy Equation of State and Modulations in the Hubble Diagram
• Early structure formation in quintessence models and its implications for cosmic reionisation from first stars
• Cosmological constraints on neutrino plus axion hot dark matter
• VoIgt profile Parameter Estimation Routine (VIPER): H I photoionization rate at z<0.5
• A combined analysis of 3D Weak Lensing, Lyman-alpha forest and WMAP year three data
• On the minimum mass of reionization sources
• Bayesian optimal reconstruction of the primordial power spectrum
• Dark energy records in lensed cosmic microwave background
• Numerical Simulations of the Lyman-alpha forest - A comparison of Gadget-2 and Enzo
• The Effective Theory of Inflation in the Standard Model of the Universe and the CMB+LSS data analysis
• How robust are inflation model and dark matter constraints from cosmological data?
• WMAP 3-year primordial power spectrum
• How Late can the Dark Matter form in our universe?
• The Non-Linear Matter Power Spectrum in Warm Dark Matter Cosmologies
• Constraining fundamental physics with the cosmic microwave background
• Lyman-α Forest and Cosmic Weak Lensing in a Warm Dark Matter Universe
• Simulating intergalactic gas for DESI-like small scale Lymanα forest observations
• Inferring high redshift large-scale structure dynamics from the Lyman-alpha forest
• The QSO proximity effect at redshift <z>=2.6 with the FLO approach
• Cosmological Constraints from the eBOSS Lyman-$\alpha$ Forest using the PRIYA Simulations
• On the importance of high redshift intergalactic voids
• The giant arc statistics in the three year WMAP cosmological model
• A hierarchical field-level inference approach to reconstruction from sparse Lyman-$\alpha$ forest data
• The Effect of Large-Scale Power on Simulated Spectra of the Lya forest
• Conservative Estimates of the Mass of the Neutrino from Cosmology
• Constraining Light Gravitino Mass from Cosmic Microwave Background
• Tracing the gas at redshift 1.7-3.5 with the Lyman-alpha forest: the FLO approach
• Weighing neutrinos in the presence of a running primordial spectral index
• Probing reionization using quasar near-zones at redshift z ~ 6
• A Multi-Fidelity Emulator for the Lyman-$\alpha$ Forest Flux Power Spectrum
• Scale dependence of the primordial spectrum from combining the three-year WMAP, Galaxy Clustering, Supernovae, and Lyman-alpha forests
• Measuring the equation of state of the high-z intergalactic medium using curvature statistics
• Braneworld inflation from an effective field theory after WMAP three-year data
• Constraining Slow-Roll Inflation in the Presence of Dynamical Dark Energy
• Ly$\alpha$ Leaks and Reionization
• Cosmology of Single Species Hidden Dark Matter
• Probing Primordial Symmetry Breaking with Cosmic Microwave Background Anisotropy
• Probing Neutrino low energy and mass scales