Testing Cosmology with Double Source Lensing

Abstract

Double source lensing provides a dimensionless ratio of distance ratios, a "remote viewing" of cosmology through distances relative to the gravitational lens, beyond the observer. We use this to test the cosmological framework, particularly with respect to spatial curvature and the distance duality relation. We derive a consistency equation for constant spatial curvature, allowing not only the investigation of flat vs curved but of the Friedmann-Lemaître-Robertson-Walker framework itself. For distance duality, we demonstrate that the evolution of the lens mass profile slope must be controlled to $\gtrsim 5$ times tighter fractional precision than a claimed distance duality violation. Using LENSPOP forecasts of double source lensing systems in Euclid and LSST surveys we also explore constraints on dark energy equation of state parameters and any evolution of the lens mass profile slope.

10 pages, 7 figures. v2 matches version accepted to JCAP

References in corpus (11)

• Gaussian Process Cosmography
• CMB power spectra and cosmological parameters from Planck PR4 with CamSpec
• The Sloan Lens ACS Survey. VI: Discovery and analysis of a double Einstein ring
• Nonparametric Reconstruction of the Dark Energy Equation of State
• How to use GP: Effects of the mean function and hyperparameter selection on Gaussian Process regression
• Growth of Cosmic Structure
• Model-independent constraints on ${\Omega }_m$ and $H(z)$ from the link between geometry and growth
• Strongly lensed supernovae as a self-sufficient probe of the distance duality relation
• Double Source Lensing Probing High Redshift Cosmology
• Deep learning method in testing the cosmic distance duality relation
• What is the Standard Cosmological Model?

Cited by in corpus (7)

• Euclid. I. Overview of the Euclid mission
• Scalar field dark energy models: Current and forecast constraints
• Strong Lensing by Galaxies
• J1721+8842: The first Einstein zig-zag lens
• Constraining Cosmology with Double-source-plane Strong Gravitational Lenses from the AGEL Survey
• Line-of-sight effects on double source plane lenses
• A compact group lens modeled with GIGA-Lens: Enhanced inference for complex systems