CFHTLenS: testing the laws of gravity with tomographic weak lensing and redshift-space distortions

By F. Simpson, Catherine Heymans, David Parkinson, C. Blake, M. Kilbinger, J. Benjamin, T. Erben, H. Hildebrandt, H. Hoekstra, Thomas D. Kitching and 13 more. 2012

150 citations recorded by the source corpus.

Dark energy may be the first sign of new fundamental physics in the Universe, taking either a physical form or revealing a correction to Einsteinian gravity. Weak gravitational lensing and galaxy peculiar velocities provide complementary probes of general relativity, and in combination allow us to test modified theories of gravity in a unique way. We perform such an analysis by combining measurements of cosmic shear tomography from the Canada–France–Hawaii Telescope Lensing Survey (CFHTLenS) with the growth of structure from the WiggleZ Dark Energy Survey and the Six-degree-Field Galaxy Survey, producing the strongest existing joint constraints on the metric potentials that describe general theories of gravity. For scale-independent modifications to the metric potentials which evolve linearly with the effective dark energy density, we find present-day cosmological deviations in the Newtonian potential and curvature potential from the prediction of general relativity to be ΔΨ/Ψ = 0.05 ± 0.25 and ΔΦ/Φ = −0.05 ± 0.3, respectively (68 per cent confidence limits).

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/aa02662ca7d1fc943c30900ae504b1b5788a8195

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Citations in the corpus

KiDS-450 + 2dFLenS: Cosmological parameter constraints from weak gravitational lensing tomography and overlapping redshift-space galaxy clustering (2017, methodology): “This complementarity has notably been used in Simpson et al. (2013) to constrain deviations from GR with the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS; Heymans et al. 2012; Hildebrandt et al. 2012; Erben et al. 2013; Miller et al. 2013), WiggleZ Dark Energy Survey (Blake et al. 2011,…”
CFHTLenS tomographic weak lensing cosmological parameter constraints: Mitigating the impact of intrinsic galaxy alignments (2013, methodology): “This broad bin tomography measurement is also used to constrain parametrized modified gravity models in Simpson et al. (2013).”
Effective field theory of dark energy: A review (2019, methodology): “A parameterization commonly used in the literature is [243, 202, 244, 1]”
The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Measuring growth rate and geometry with anisotropic clustering (2013, background): “…deviations from the predictions of general relativity (GR) since even small changes in the growth of structure accumulate to a large offset over cosmic time (for recent GR constraints see e.g. Zhao et al. 2012; Rapetti et al. 2013; Samushia et al. 2013; Sanchez et al. 2013a; Simpson et al. 2013).”
Cosmological tests of modified gravity (2015, background): “One parametrisation is to assume that these functions are scale invariant and their time dependence is determined by the density parameter associated with the cosmological constant [216]”
Testing modified gravity at cosmological distances with LISA standard sirens (2019, background): “Common options include a power law for αM in terms of the scale factor a or, motivated by a connection to dark energy, a proportionality to the fractional dark energy density ΩΛ(a) ≡ 8πGΛ/(3H2) as well as a generalisation of that to an evolving effective dark energy contribution [72].”
Beyond the Cosmological Standard Model (2014, unknown): “This represents the state of the art in using weak lensing, but ongoing surveys will reduce the statistical errors by a significant factor [958].”
Galaxy Alignments: An Overview (2015, background): “2000) and is developing into an increasingly mature cosmological probe (e.g. Schrabback et al. 2010; Heymans et al. 2013; Simpson et al. 2013; Kitching et al. 2014b).”
Gravitational lensing analysis of the Kilo-Degree Survey (2015, background): “MNRAS 454, 3500–3532 (2015) for example Heymans et al. 2013, and references therein) and a range of modified gravity scenarios (Simpson et al. 2013; Planck Collaboration XIV 2015b).”
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Constraining modified gravity (2016, background): “For further studies see for instance Daniel et al. (2010); Simpson et al. (2013); Planck Collaboration et al. (2016b).”
CFHTLenS: combined probe cosmological model comparison using 2D weak gravitational lensing (2012, methodology): “In several companion papers, we perform 3D cosmic shear analyses by splitting up galaxies into redshift bins using correlation function methods presented here (lensing tomography: Benjamin et al. 2013; Simpson et al. 2013, Heymans et al., in preparation).”
The Intrinsic Alignment of Galaxies and its Impact on Weak Gravitational Lensing in an Era of Precision Cosmology (2014, unknown): “…Ishak and Dossett (2009); Song and Doré (2009); Thomas et al. (2009); Zhao et al. (2009); Bean and Tangmatitham (2010); Daniel et al. (2010); Jain and Khoury (2010); Tereno et al. (2011); Dossett et al. (2011); Thomas et al. (2011); Asaba et al. (2013); Kirk et al. (2013); Simpson et al. (2013)).”