Full-Sky Weak Lensing Simulation with 70 Billion Particles

Abstract

We have performed a 70 billion dark-matter particles N-body simulation in a 2 $h^{-1}$ Gpc periodic box, using the concordance, cosmological model as favored by the latest WMAP3 results. We have computed a full-sky convergence map with a resolution of $\Delta \theta \simeq 0.74$ arcmin${}^2$, spanning 4 orders of magnitude in angular dynamical range. Using various high-order statistics on a realistic cut sky, we have characterized the transition from the linear to the nonlinear regime at $\ell \simeq 1000$ and shown that realistic galactic masking affects high-order moments only below $\ell <200$. Each domain (Gaussian and non-Gaussian) spans 2 decades in angular scale. This map is therefore an ideal tool for testing map-making algorithms on the sphere. As a first step in addressing the full map reconstruction problem, we have benchmarked in this paper two denoising methods: 1) Wiener filtering applied to the Spherical Harmonics decomposition of the map and 2) a new method, called MRLens, based on the modification of the Maximum Entropy Method on a Wavelet decomposition. While the latter is optimal on large spatial scales, where the signal is Gaussian, MRLens outperforms the Wiener method on small spatial scales, where the signal is highly non-Gaussian. The simulated full-sky convergence map is freely available to the community to help the development of new map-making algorithms dedicated to the next generation of weak-lensing surveys.

7 pages, 6 figures, accepted in Astronomy and Astrophysics, final version after language editing

References in corpus (24)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• HEALPix -- a Framework for High Resolution Discretization, and Fast Analysis of Data Distributed on the Sphere
• Cosmological Hydrodynamics with Adaptive Mesh Refinement: a new high resolution code called RAMSES
• Power Spectra for Cold Dark Matter and its Variants
• Weak Gravitational Lensing by Large-Scale Structure
• Very weak lensing in the CFHTLS Wide: Cosmology from cosmic shear in the linear regime
• Multiscale Gaussian Random Fields for Cosmological Simulations
• Ray Tracing Simulations of Weak Lensing by Large-Scale Structure
• Cosmological Model Predictions for Weak Lensing: Linear and Nonlinear Regimes
• Weak Lensing and Dark Energy
• The influence of baryons on the clustering of matter and weak lensing surveys
• Initial Conditions for Large Cosmological Simulations
• Wavelets, ridgelets and curvelets on the sphere
• Weak Lensing: Prospects for Measuring Cosmological Parameters
• The onion universe: all sky lightcone simulations in spherical shells
• Accurate estimators of power spectra in N-body simulations
• Weak Lensing Predictions at Intermediate Scales
• Weak Lensing Mass Reconstruction using Wavelets
• CMB data analysis and sparsity
• Evaluating Dark Energy Probes using Multi-Dimensional Dark Energy Parameters
• Simulations of weak gravitational lensing
• A Large Sky Simulation of the Gravitational Lensing of the Cosmic Microwave Background
• Two-point correlation functions on the light cone: testing theoretical predictions against N-body simulations
• DUNE: The Dark Universe Explorer

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• The dark matter of gravitational lensing
• Connecting the cosmic web to the spin of dark halos: implications for galaxy formation
• The pre-launch Planck Sky Model: a model of sky emission at submillimetre to centimetre wavelengths
• The MICE Grand Challenge Lightcone Simulation I: Dark matter clustering
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• Simulations of Wide-Field Weak Lensing Surveys I: Basic Statistics and Non-Gaussian Effects
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• Statistics of extreme objects in the Juropa Hubble Volume simulation
• Imprints of relativistic effects on the asymmetry of the halo cross-correlation function: from linear to non-linear scales
• The Millennium Run Observatory: First Light
• Bias and scatter in the Hubble diagram from cosmological large-scale structure
• Exact Wavelets on the Ball
• Probing cosmology with weak lensing selected clusters I: Halo approach and all-sky simulations
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• Weak lensing predictions for modified gravities at non-linear scales
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• The Correspondence between Convergence Peaks from Weak Lensing and Massive Dark Matter Haloes
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• Resolution Convergence in Cosmological Hydrodynamical Simulations Using Adaptive Mesh Refinement
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