Distance-redshift and growth-redshift relations as two windows on acceleration and gravitation: Dark energy or new gravity?

2005/03/30 by L. Knox, Lloyd Knox, Yong‐Seon Song +2 · 4 citations
Earth and Planetary Sciences · Physics and Astronomy · #Cosmology and Gravitation Theories #Earth Systems and Cosmic Evolution #Relativity and Gravitational Theory #astro-ph

paper · pdf · doi:10.1103/physrevd.74.023512

published as Phys.Rev.D74:023512,2006 · Submitted to Phys. Rev. Lett

arxiv created 2005/03/30 · openalex publication_date 2006/07/11 · arxiv updated 2010/04/22 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

Small distortions in the observed shapes of distant galaxies, a cosmic shear due to gravitational lensing, can be used to simultaneously determine the distance-redshift relation, r(z), and the density contrast growth factor, g(z). Both of these functions are sensitive probes of the acceleration. Their simultaneous determination allows for a consistency test and provides sensitivity to physics beyond the standard dark energy paradigm.

Citations

• Measurements of Ω and Λ from 42 High‐Redshift Supernovae
• Determination of cosmological parameters from cosmic shear data
• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Power Spectrum Tomography with Weak Lensing

Cited by

• Probing Gravity at Cosmological Scales by Measurements which Test the Relationship between Gravitational Lensing and Matter Overdensity
• Redshift space correlations and scale-dependent stochastic biasing of density peaks
• Parametrized post-Friedmann signatures of acceleration in the CMB
• A step towards testing general relativity using weak gravitational lensing and redshift surveys