Improving measurements of H(z) and Da(z) by analyzing clustering anisotropies

Abstract

The baryonic acoustic feature in galaxy clustering is a promising tool for constraining the nature of the cosmic acceleration, through measurements of expansion rates H and angular diameter distances D_A. Angle-averaged measurements of clustering yield constraints on the quantity D_A^2/H. However, to break the degeneracy between these two parameters one must measure the anisotropic correlation function as a function of both line-of-sight (radial) and transverse separations. Here we investigate how to most effectively do so, using analytic techniques and mock catalogues. In particular, we examine multipole expansions of the correlation function as well as "clustering wedges" xi(Delta mu, s), where mu = s_||/s and s_|| is the radial component of separation s. Both techniques allow strong constraints on H and D_A, as expected. The radial wedges strongly depend on H and the transverse wedges are sensitive to D_A. Analyses around the region of the acoustic peak constrain H ~20% better when using the wedge statistics than when using the monopole-quadrupole combination. However, we show that the hexadecapole allows substantially stronger constraints than the monopole and quadrupole alone. Our findings here demonstrate that wedge statistics provide a practical alternative technique to multipoles, that should be useful to test systematics and will provide comparable or better constraints. Finally, we predict the constraints from galaxy clustering that will be possible with a completed version of the ongoing Baryonic Oscillation Spectroscopic Survey.

26 pages, 14 figures, submitted to MNRAS

References in corpus (23)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• The 6dF Galaxy Survey: Baryon Acoustic Oscillations and the Local Hubble Constant
• Cosmological Constraints from the SDSS Luminous Red Galaxies
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Power Spectra and WMAP-Derived Parameters
• The imprints of primordial non-gaussianities on large-scale structure: scale dependent bias and abundance of virialized objects
• Measuring the Baryon Acoustic Oscillation scale using the SDSS and 2dFGRS
• Improving Cosmological Distance Measurements by Reconstruction of the Baryon Acoustic Peak
• Nonlinear Evolution of Baryon Acoustic Oscillations
• Baryon Acoustic Oscillations in 2D: Modeling Redshift-space Power Spectrum from Perturbation Theory
• Thick gas discs in faint dwarf galaxies
• Towards an accurate model of the redshift space clustering of halos in the quasilinear regime
• Large-Scale Anisotropic Correlation Function of SDSS Luminous Red Galaxies
• Cosmological baryonic and matter densities from 600,000 SDSS Luminous Red Galaxies with photometric redshifts
• `Eppur Si Muove': On The Motion of the Acoustic Peak in the Correlation Function
• Clustering of luminous red galaxies I: large scale redshift space distortions
• Constraining Anisotropic Baryon Oscillations
• Redshift-Space Distortions with the Halo Occupation Distribution II: Analytic Model
• Anisotropic Magnification Distortion of the 3D Galaxy Correlation: I. Real Space
• Galaxy Bias and its Effects on the Baryon Acoustic Oscillations Measurements
• Forecasting the Cosmological Constraints with Anisotropic Baryon Acoustic Oscillations from Multipole Expansion
• Clustering of photometric luminous red galaxies I : Growth of Structure and Baryon Acoustic Feature
• Regarding the Line-of-Sight Baryonic Acoustic Feature in the Sloan Digital Sky Survey and Baryon Oscillation Spectroscopic Survey Luminous Red Galaxy Samples
• Constraining dark energy via baryon acoustic oscillations in the (an)isotropic light-cone power spectrum

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