Evidence for a non-zero Lambda and a low matter density from a combined analysis of the 2dF Galaxy Redshift Survey and Cosmic Microwave Background Anisotropies

Abstract

We perform a joint likelihood analysis of the power spectra of the 2dF Galaxy Redshift Survey (2dFGRS) and the cosmic microwave background (CMB) anisotropies under the assumptions that the initial fluctuations were adiabatic, Gaussian and well described by power laws with scalar and tensor indices of n_s and n_t. On its own, the 2dFGRS sets tight limits on the parameter combination Omega_m h, but relatively weak limits on the fraction of the cosmic matter density in baryons Omega_b/Omega_m. The CMB anisotropy data alone set poor constraints on the cosmological constant and Hubble constant because of a `geometrical degeneracy' among parameters. Furthermore, if tensor modes are allowed, the CMB data allow a wide range of values for the physical densities in baryons and cold dark matter. Combining the CMB and 2dFGRS data sets helps to break both the geometrical and tensor mode degeneracies. The values of the parameters derived here are consistent with the predictions of the simplest models of inflation, with the baryon density derived from primordial nucleosynthesis and with direct measurements of the Hubble parameter. In particular, we find strong evidence for a positive cosmological constant with a pm 2sigma range of 0.65 < Omega_Lambda < 0.85, completely independently of constraints on Omega_Λderived from Type Ia supernovae.

7 pages, 7 figures, mn.sty submitted to mnras

References in corpus (9)

• The 2dF Galaxy Redshift Survey: Spectra and redshifts
• A measurement of the cosmological mass density from clustering in the 2dF Galaxy Redshift Survey
• A High Spatial Resolution Analysis of the MAXIMA-1 Cosmic Microwave Background Anisotropy Data
• Cosmological implications of the MAXIMA-I high resolution Cosmic Microwave Background anisotropy measurement
• Density Perturbations in the Ekpyrotic Scenario
• Is cosmology consistent?
• Measuring Polarization with DASI
• Chemical abundances in an UV-selected sample of galaxies
• The build-up of halos within Press-Schechter theory

Cited by in corpus (201)

• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• Cosmological parameters from CMB and other data: a Monte-Carlo approach
• New Constraints on ${\Omega }_M$, ${\Omega }_{\Lambda }$, and w from an Independent Set of Eleven High-Redshift Supernovae Observed with HST
• Observational Probes of Cosmic Acceleration
• Nearly 5000 Distant Early-Type Galaxies in COMBO-17: a Red Sequence and its Evolution since z~1
• The New Galaxy: Signatures of its Formation
• Constraining Cosmological Parameters Based on Relative Galaxy Ages
• The 2dF Galaxy Redshift Survey: correlation functions, peculiar velocities and the matter density of the Universe
• Probing Dark Energy with Baryonic Acoustic Oscillations from Future Large Galaxy Redshift Surveys
• The 2dF Galaxy Redshift Survey: The bias of galaxies and the density of the Universe
• The 6dF Galaxy Survey: Samples, Observational Techniques and the First Data Release
• A primer on hierarchical galaxy formation: the semi-analytical approach
• Interacting quintessence solution to the coincidence problem
• Constraints on the equation of state of dark energy and the Hubble constant from stellar ages and the CMB
• The end of unified dark matter?
• Spherically symmetric solutions of modified field equations in f(R) theories of gravity
• Parameter constraints for flat cosmologies from CMB and 2dFGRS power spectra
• Extended tachyon field, Chaplygin gas and solvable k-essence cosmologies
• Bayesian Strong Gravitational-Lens Modeling on Adaptive Grids: Objective Detection of Mass Substructure in Galaxies
• The abundance and clustering of dark haloes in the standard Lambda CDM cosmogony
• The Hubble Higher-Z Supernova Search: Supernovae to z=1.6 and Constraints on Type Ia Progenitor Models
• Cosmological constraints from the X-ray gas mass fraction in relaxed lensing clusters observed with Chandra
• Cluster Lenses
• The Formation of a Realistic Disk Galaxy in Lambda Dominated Cosmologies
• The Origin and Evolution of the Mass-Metallicity Relationship for Galaxies: Results from Cosmological N-Body Simulations
• The foundations of observing dark energy dynamics with the Wilkinson Microwave Anisotropy Probe
• The 2dF Galaxy Redshift Survey: Spherical Harmonics analysis of fluctuations in the final catalogue
• Is the Low CMB Quadrupole a Signature of Spatial Curvature?
• A new view of k-essence
• Cosmological parameters from CMB measurements and the final 2dFGRS power spectrum
• Cosmological Constraints from Strong Gravitational Lensing in Galaxy Clusters
• Constraints on Omega_m and sigma_8 from weak lensing in RCS fields
• Cosmic Microwave Background Fluctuations from Gravitational Waves: An Analytic Approach
• A new upper limit on the total neutrino mass from the 2dF Galaxy Redshift Survey
• The shear power spectrum from the COMBO-17 survey
• The power spectrum of galaxies in the 2dF 100k redshift survey
• Cosmological baryonic and matter densities from 600,000 SDSS Luminous Red Galaxies with photometric redshifts
• Towards a Cosmological Hubble Diagram for Type II-P Supernovae
• Static spherically symmetric perfect fluid solutions in $f(R)$ theories of gravity
• Early Gas Stripping as the Origin of the Darkest Galaxies in the Universe
• Interpreting Cosmological Vacuum Decay
• Weak lensing with COMBO-17: estimation and removal of intrinsic alignments
• Separating the Early Universe from the Late Universe: cosmological parameter estimation beyond the black box
• CLASH-VLT: A Highly Precise Strong Lensing Model of the Galaxy Cluster RXC J2248.7-4431 (Abell S1063) and Prospects for Cosmography
• Verifying the Cosmological Utility of Type Ia Supernovae: Implications of a Dispersion in the Ultraviolet Spectra
• Towards Cosmological Concordance on Galactic Scales
• The Hubble Diagram of Type Ia Supernovae as a Function of Host Galaxy Morphology
• Cosmological parameter constraints from SDSS luminous red galaxies: a new treatment of large-scale clustering
• Absolute Values of Neutrino Masses: Status and Prospects
• Cosmological structure formation in a homogeneous dark energy background
• Nonlinear structure formation in the Cubic Galileon gravity model
• The galaxy power spectrum take on spatial curvature and cosmic concordance
• K-essence and the coincidence problem
• Constraining the cosmological parameters with the gas mass fraction in local and z>0.7 Galaxy Clusters
• Dark halo properties from rotation curves
• Bayesian power-spectrum inference for Large Scale Structure data
• Models of inflation liberated by the curvaton hypothesis
• Information content of the non-linear matter power spectrum
• Morphology of the supercluster-void network in LCDM cosmology
• Constraining the Matter Power Spectrum Normalization using the SDSS/RASS and REFLEX Cluster surveys
• Stability of a vacuum nonsingular black hole
• The Impact of an Extra Background of Relativistic Particles on the Cosmological Parameters derived from Microwave Background Anisotropies
• Spherical collapse in Galileon gravity: fifth force solutions, halo mass function and halo bias
• Cosmological parameter estimation using Very Small Array data out to l=1500
• Fourier analysis of luminosity-dependent galaxy clustering
• Halo properties in models with dynamical Dark Energy
• Improved Measurements of the CMB Power Spectrum with ACBAR
• Upper limits on neutrino masses from the 2dFGRS and WMAP: the role of priors
• Current status of weak gravitational lensing
• Constraints on large scale inhomogeneities from WMAP-5 and SDSS: confrontation with recent observations
• Comparing approximate methods for mock catalogues and covariance matrices I: correlation function
• Information content of the non-linear power spectrum: the effect of beat-coupling to large scales
• Testing homogeneity on large scales in the Sloan Digital Sky Survey Data Release One
• The distribution of red and blue galaxies in groups: an empirical test of the halo model
• Imprints of Dark Energy on Cosmic Structure Formation I) Realistic Quintessence Models and the Non-Linear Matter Power Spectrum
• Probing the Friedmann equation during recombination with future CMB experiments
• Revealing the Nature of Dark Energy Using Bayesian Evidence
• The Millennium Galaxy Catalogue: The photometric accuracy, completeness and contamination of the 2dFGRS and SDSS-EDR & DR1 datasets
• Thinking Outside the Box: Effects of Modes Larger than the Survey on Matter Power Spectrum Covariance
• A 2% Distance to z = 0.35 by Reconstructing Baryon Acoustic Oscillations - III : Cosmological Measurements and Interpretation
• Cosmological expansion and the uniqueness of gravitational action
• The X-ray surface brightness profiles of hot galaxy clusters up to z~0.8: evidence for self-similarity and constraints on Omega_0
• The galaxy power spectrum: precision cosmology from large scale structure?
• Reconciling the local void with the CMB
• First results from the Very Small Array -- IV. Cosmological parameter estimation
• The last stand before MAP: cosmological parameters from lensing, CMB and galaxy clustering
• Constraints on the dark energy equation of state from the imprint of baryons on the power spectrum of clusters
• Arc Statistics in Cosmological Models with Dark Energy
• ISW measurements with photometric redshift surveys: 2MASS results and future prospects
• Stellar configurations in f(R) theories of gravity
• Cosmography with cluster strong lenses: the influence of substructure and line-of-sight halos
• Restframe I-band Hubble diagram for type Ia supernovae up to redshift z ~0.5
• Methods for Bayesian power spectrum inference with galaxy surveys
• The 2dF QSO Redshift Survey - XIII. A Measurement of Lambda from the QSO Power Spectrum
• Dark Matter and Dark Energy from the solution of the strong CP problem
• Swiss Cheese and a Cheesy CMB
• Measuring our universe from galaxy redshift surveys
• Mass-temperature relation of galaxy clusters: implications from the observed luminosity-temperature relation and X-ray temperature function
• What is the best way to measure baryonic acoustic oscillations?
• Quintessential inflation: A tale of emergent and broken symmetries
• Cluster Formation Rate in Models with Dark Energy
• Type Ia Supernovae and Cosmology
• Bayesian Evidence for a Cosmological Constant using new High-Redshift Supernovae Data
• Cosmological implications and structure formation from a time varying vacuum
• Model-independent dark energy test with sigma_8 using results from the Wilkinson Microwave Anisotropy Probe
• Toward a Unified Description of Dark Energy and Dark Matter from the Abnormally Weighting Energy Hypothesis
• Bianchi Type-I Cosmological Models with Variable G and 4Λ$-Terms in General Relativity
• Galaxy cluster strong lensing cosmography: cosmological constraints from a sample of regular galaxy clusters
• The 2dF QSO Redshift Survey - XI. The QSO Power Spectrum
• Bulk Viscous LRS Biachi-I Universe with variable $G$ and decaying $\Lambda$
• A Cold Front in a Preheated Galaxy Cluster
• Tight Cosmological Constraints from the Angular-Size/Redshift Relation for Ultra-Compact Radio Sources
• The SuperCOSMOS all-sky galaxy catalogue
• Bright High z SnIa: A Challenge for LCDM?
• On Recovering the Nonlinear Bias Function from Counts in Cells Measurements
• Modified Chaplygin Traversable Wormholes
• The generality of inflation in closed cosmological models with some quintessence potentials
• Cosmography with cluster strong lensing
• Clustering, Angular Size and Dark Energy
• Dark Matter and Dark Energy from a single scalar field and CMB data
• Evolution of large-scale perturbations in quintessence models
• On the observational determination of squeezing in relic gravitational waves and primordial density perturbations
• The power spectrum amplitude from clusters revisited: σ_8 using simulations with preheating and cooling
• Ages and Metallicities of Early-Type Void Galaxies from Line Strength Measurements
• Towards accurate modelling of the ISW effect, the non-linear contribution
• Gravitational Lensing by a Compound Population of Halos: Standard Models
• Spheroidal post-mergers in the local Universe
• Geometrical Constraints on Dark Energy
• Galaxy surveys, inhomogeneous reionization, and dark energy
• Symmetries leading to inflation
• Features in the primordial power spectrum: constraints from the CMB and the limitation of the 2dF and SDSS redshift surveys to detect them
• Principal Component Analysis of the Cosmic Microwave Background Anisotropies: Revealing The Tensor Degeneracy
• Dark energy effects on the Lyman-alpha forest
• Response of distance measures to the equation of state
• The nature of the relative bias between galaxies of different spectral type in 2dFGRS
• Cosmological implications from the full shape of the large-scale power spectrum of the SDSS DR7 luminous red galaxies
• Galaxy Bias in Quintessence Cosmological Models
• A new model for the full shape of the large-scale power spectrum
• Cosmic acceleration and extra dimensions: constraints on modifications of the Friedmann equation
• Strong Gravitational Lensing and Dynamical Dark Energy
• Light of Planck-2015 on Non-Canonical Inflation
• Galactic Foregrounds in OVRO and UCSB South Pole 1994 Cosmic Microwave Background Anisotropy Data
• Role of Modified Chaplygin Gas as a Dark Energy Model in Collapsing Spherically Symmetric Cloud
• Cosmological Constraints from a Combined Analysis of the Cluster Mass Function and Microwave Background Anisotropies
• Age of the Universe in the Cardassian Model
• Large extra dimensions, the galaxy power spectrum and the end of inflation
• Potential--density pairs for spherical galaxies and bulges: the influence of scalar fields
• The power spectrum of galaxy clustering in the APM survey
• Combined constraints on Cardassian models from supernovae, CMB and large-scale structure observations
• Mock galaxy redshift catalogues from simulations: implications for Pan-STARRS1
• Small scale clustering of late forming dark matter
• Tracing the Nature of Dark Energy with Galaxy Distribution
• Probing Dark Energy with Supernovae : Bias from the time evolution of the equation of state
• Quintessence with a constant equation of state in hyperbolic universes
• The Integrated Sachs-Wolfe effect as a probe of non-standard cosmological evolution
• Large-scale structure and matter in the universe
• An infrared study of local galaxy mergers
• Cosmological constrains from X-ray AGN clustering and SNIa data
• The power spectrum from the angular distribution of galaxies in the CFHTLS-Wide fields at redshift ~0.7
• Cosmological constraints from the cluster contribution to the power spectrum of the soft X-ray background. New evidence for a low sigma_8
• Potential-density pairs for axisymmetric galaxies: the influence of scalar fields
• Observational estimates of the initial power spectrum at small scale from Lyman-$\alpha$ absorbers
• MEDUSA: Minkowski functionals estimated from Delaunay tessellations of the three-dimensional large-scale structure
• Surveying the dark side
• Constraining the CDM spectrum normalization in flat dark energy cosmologies
• Inflating p-branes
• GASP VIII: Capturing the birth of a Tidal Dwarf Galaxy in a merging system at z~0.05
• The Angular-Diameter-Distance-Maximum and Its Redshift as Constraints on $\Lambda \ne 0$ FLRW Models
• Wide Field Surveys and Astronomical Discovery Space
• Reconstructing the extended structure of multiple sources strongly lensed by the ultra-massive elliptical galaxy SDSS J0100+1818
• Cosmological simulations using a static scalar-tensor theory
• A spherical scalar-tensor galaxy model
• Predictions of mixed non-Gaussian cosmological density fields for the cosmic microwave background radiation
• Tachyon field in loop quantum cosmology: An example of traversable singularity
• The 2dF Galaxy Redshift Survey as a Cosmological Laboratory
• Cosmology With Interacting Dark Energy
• Statistical characteristics of observed Ly-$\alpha$ forest and the shape of initial power spectrum
• Cosmological surveys with multi-object spectrographs
• Is the CMB shift parameter connected with the growth of cosmological perturbations?
• The tension of cosmological magnetic fields as a contribution to dark energy
• Can we distinguish early dark energy from a cosmological constant?
• Evolution mapping II: describing statistics of the non-linear cosmic velocity field
• Improved two-point correlation function estimates using glass-like distributions as a reference sample
• `Hyper Parameters' Approach to Joint Estimation: Applications to Cepheid-Calibrated Distances and X-Ray Clusters
• Complementarity of Future Dark Energy Probes
• Inflationary Cosmology: Theory and Phenomenology
• A primer on the ekpyrotic scenario
• Statistically significant length scale of filaments as a robust measure of galaxy distribution
• Constraints on smoothness parameter and dark energy using observational $H(z)$ data
• Loitering universe models in light of the CMB
• 20+ years of Inflation
• Nature of Dark Energy and Polarization Measurements
• Phenomenological aspects of dark energy dominated cosmologies
• Glass-Like Random Catalogues for Two-Point Estimates on the Light Cone
• Cosmology in a Higher-Curvature Gravity
• Vacuum Polarization in an Anti-de Sitter Space as an Origin for a Cosmological Constant in a Brane World
• Testing the CMB Data for Systematic Effects
• Structure Formation in Dynamical Dark Energy Models
• String Cosmology in LRS Bianchi Type-II Dusty Universe with Time Decaying Vacuum Energy Density $\Lambda$
• New tests of dark sector interactions from the full-shape galaxy power spectrum
• Redshift-space distortion from dynamical dark energy with time-dependent Lagrangian perturbation theory