Unfolding the matter distribution using three-dimensional weak gravitational lensing

  title={Unfolding the matter distribution using three-dimensional weak gravitational lensing},
  author={P. Simon and Andy N. Taylor and Jan Hartlap},
  journal={Monthly Notices of the Royal Astronomical Society},
Combining redshift and galaxy shape information offers new exciting ways of exploiting the gravitational lensing effect for studying the large scales of the cosmos. One application is the three-dimensional (3D) reconstruction of the matter density distribution which is explored in this paper. We give a generalization of an already known minimum-variance estimator of the 3D matter density distribution that facilitates the combination of thin redshift slices of sources with samples of broad… Expand
Improving three-dimensional mass mapping with weak gravitational lensing using galaxy clustering
Context. The weak gravitational lensing distortion of distant galaxy images (defined as sources) probes the projected large-scale matter distribution in the Universe. The availability of redshiftExpand
Optimal weighting in galaxy surveys: Application to redshift-space distortions
Using multiple tracers of large-scale structure allows to evade the limitations imposed by sampling variance for some parameters of interest in cosmology. We demonstrate the optimal way of carryingExpand
Improving Weak Lensing Reconstructions in 3D Using Sparsity
Weak gravitational lensing is a powerful tool, which allows us to map the distribution of dark matter in the Universe. With the advent of large, high-resolution and multi-wavelength surveys, it hasExpand
The COSMOS Density Field: A Reconstruction Using Both Weak Lensing and Galaxy Distributions
The COSMOS field has been the subject of a wide range of observations, with a number of studies focusing on reconstructing the 3D dark matter density field. Typically, these studies have focused onExpand
Density mapping with weak lensing and phase information
The available probes of the large-scale structure in the Universe have distinct properties: galaxies are a high resolution but biased tracer of mass, while weak lensing avoids such biases but, due toExpand
Three-dimensional Reconstruction of the Density Field: An SVD Approach to Weak-lensing Tomography
We present a new method for constructing three-dimensional mass maps from gravitational lensing shear data. We solve the lensing inversion problem using truncation of singular values (within theExpand
CFHTLenS: mapping the large-scale structure with gravitational lensing
We present a quantitative analysis of the largest contiguous maps of projected mass density obtained from gravitational lensing shear. We use data from the 154 deg^2 covered by theExpand
GLIMPSE: accurate 3D weak lensing reconstructions using sparsity
We present GLIMPSE - Gravitational Lensing Inversion and MaPping with Sparse Estimators - a new algorithm to generate density reconstructions in three dimensions from photometric weak lensingExpand
Efficient optimal reconstruction of linear fields and band-powers from cosmological data
We present an efficient implementation of Wiener filtering of real-space linear field and optimal quadratic estimator of its power spectrum Band-powers. We first recast the field reconstruction intoExpand
Improving weak lensing mass map reconstructions using Gaussian and Sparsity Priors: application to DES SV
Mapping the underlying density field, including non-visible dark matter, using weak gravitational lensing measurements is now a standard tool in cosmology. Due to its importance to the scienceExpand


Weak-Lensing Surveys and the Intrinsic Correlation of Galaxy Ellipticities
We explore the possibility that an intrinsic correlation between galaxy ellipticities arising during the galaxy formation process may account for part of the shear signal recently reported by severalExpand
Mapping the 3D dark matter potential with weak shear
We investigate the practical implementation of Taylor's three-dimensional gravitational potential reconstruction method using weak gravitational lensing, together with the requisite reconstruction ofExpand
Weak Lensing Reconstruction and Power Spectrum Estimation: Minimum Variance Methods
Large-scale structure distorts the images of background galaxies, which allows one to measure directly the projected distribution of dark matter in the universe and determine its power spectrum. HereExpand
COSMOS: Three-dimensional Weak Lensing and the Growth of Structure*
We present a three-dimensional cosmic shear analysis of the Hubble Space Telescope COSMOS survey, the largest ever optical imaging program performed in space. We have measured the shapes of galaxiesExpand
Intrinsic correlation of galaxy shapes: implications for weak lensing measurements
Weak gravitational lensing is now established as a powerful method to measure mass fluctuations in the universe. It relies on the measurement of small coherent distortions of the images of backgroundExpand
Three-dimensional mapping of dark matter
We study the prospects for three-dimensional mapping of the dark matter to high redshift through the shearing of faint galaxies images at multiple distances by gravitational lensing. Such maps couldExpand
GaBoDS: The Garching-Bonn Deep Survey - VI. Probing galaxy bias using weak gravitational lensing
Aims. An interesting question of contemporary cosmology concerns the relation between the spatial distribution of galaxies and dark matter, which is thought to be the driving force behind theExpand
Cosmology with weak lensing surveys.
  • D. Munshi, P. Valageas
  • Physics, Medicine
  • Philosophical transactions. Series A, Mathematical, physical, and engineering sciences
  • 2005
Various aspects of probing the matter power spectrum and the bi-spectrum and other related statistics with weak lensing surveys are described to probe the background dynamics of the universe as well as the nature of dark matter and dark energy. Expand
Spin-induced Galaxy Alignments and Their Implications for Weak-Lensing Measurements
Large-scale correlations in the orientations of galaxies can result from alignments in their angular momentum vectors. These alignments arise from the tidal torques exerted on neighboringExpand
Wiener reconstruction of the IRAS 1.2-Jy galaxy redshift survey: cosmographical implications
We utilize the method of Wiener reconstruction with spherical harmonics and Bessel functions to recover the density and velocity fields from the IRAS 1.2-Jy redshift survey. The reconstruction reliesExpand