Perspectives for studying the dark energy at z>2 with galaxy surveys

Abstract

Now creation of big catalogs of galaxies for measurement of baryon acoustic oscillation (BAO) is actively conducted. Existing and planned in the near future surveys are directed on the range of red shifts of z.2. However, some popular models of dark energy (DE) give the maximum deviation from ΛCDM at z>2 therefore we investigated sensitivity of hypothetical high redshift surveys to the model of DE. We have found that with the increase of the number density of detected galaxies at z>2 high redshift observations may give better constraints of DE parameters.

13 pages, 6 figures

References in corpus (17)

• Dark Energy and the Accelerating Universe
• New Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy
• UV Luminosity Functions at redshifts z~4 to z~10: 10000 Galaxies from HST Legacy Fields
• Observational Constraints on the Nature of the Dark Energy: First Cosmological Results from the ESSENCE Supernova Survey
• Improved Dark Energy Constraints from ~100 New CfA Supernova Type Ia Light Curves
• A test of the nature of cosmic acceleration using galaxy redshift distortions
• The shape of the SDSS DR5 galaxy power spectrum
• Observational constraints on the linear fluctuation growth rate
• Growth factor parametrization and modified gravity
• Phantom Dark Energy Models with a Nearly Flat Potential
• Calibrating Dark Energy
• The growth factor of matter perturbations in an f(R) gravity
• Constraining DGP Gravity from Observational Data
• Growth Rate in the Dynamical Dark Energy Models
• A cosmological exclusion plot: Towards model-independent constraints on modified gravity from current and future growth rate data
• Constraining Models of Dark Energy
• Gravitational energy as dark energy: Cosmic structure and apparent acceleration