Weak lensing power spectrum reconstruction by counting galaxies.-- I: the ABS method
arXiv:1703.01575 · doi:10.3847/1538-4357/aa7ed4
Abstract
We propose an Analytical method of Blind Separation (ABS) of cosmic magnification from the intrinsic fluctuations of galaxy number density in the observed galaxy number density distribution. The ABS method utilizes the different dependences of the signal (cosmic magnification) and contamination (galaxy intrinsic clustering) on galaxy flux, to separate the two. It works directly on the measured cross galaxy angular power spectra between different flux bins. It determines/reconstructs the lensing power spectrum analytically, without assumptions of galaxy intrinsic clustering and cosmology. It is unbiased in the limit of infinite number of galaxies. In reality the lensing reconstruction accuracy depends on survey configurations, galaxy biases, and other complexities, due to finite number of galaxies and the resulting shot noise fluctuations in the cross galaxy power spectra. We estimate its performance (systematic and statistical errors) in various cases. We find that, stage IV dark energy surveys such as SKA and LSST are capable of reconstructing the lensing power spectrum at and $\ell\la 5000$ accurately. This lensing reconstruction only requires counting galaxies, and is therefore highly complementary to the cosmic shear measurement by the same surveys.
arXiv commentv1: 13 pages, 10 figures. v2: minor revisions. ApJ in press
References in corpus (69)
- Weak Gravitational Lensing
- Stable clustering, the halo model and nonlinear cosmological power spectra
- Observational Probes of Cosmic Acceleration
- KiDS-450: Cosmological parameter constraints from tomographic weak gravitational lensing
- Theoretical Models of the Halo Occupation Distribution: Separating Central and Satellite Galaxies
- CFHTLenS: The Canada-France-Hawaii Telescope Lensing Survey
- Constraining Galaxy Formation and Cosmology with the Conditional Luminosity Function of Galaxies
- Resumming Cosmological Perturbations via the Lagrangian Picture: One-loop Results in Real Space and in Redshift Space
- Weak Gravitational Lensing by Large-Scale Structure
- CMB Lensing Reconstruction on the Full Sky
- Spatial correlation function and pairwise velocity dispersion of galaxies: CDM models versus the Las Campanas Survey
- Weak Gravitational Lensing and its Cosmological Applications
- Planck 2013 results. XVII. Gravitational lensing by large-scale structure
- Effects of Baryons and Dissipation on the Matter Power Spectrum
- Detection of Gravitational Lensing in the Cosmic Microwave Background
- CFHTLenS: Combined probe cosmological model comparison using 2D weak gravitational lensing
- Detection of B-mode Polarization in the Cosmic Microwave Background with Data from the South Pole Telescope
- Cosmology with Weak Lensing Surveys
- Detection of the Power Spectrum of Cosmic Microwave Background Lensing by the Atacama Cosmology Telescope
- The Intrinsic Alignment of Galaxies and its Impact on Weak Gravitational Lensing in an Era of Precision Cosmology
- A measurement of gravitational lensing of the microwave background using South Pole Telescope data
- GRAVITATIONAL LENSING EFFECT ON COSMIC MICROWAVE BACKGROUND ANISOTROPIES: A POWER SPECTRUM APPROACH
- Detection of Cosmic Magnification with the Sloan Digital Sky Survey
- Correlation of CMB with large-scale structure: II. Weak lensing
- The influence of baryons on the clustering of matter and weak lensing surveys
- Measuring the galaxy-mass and galaxy-dust correlations through magnification and reddening
- The DES Science Verification Weak Lensing Shear Catalogues
- Measurement of the Cosmic Microwave Background Polarization Lensing Power Spectrum with the POLARBEAR experiment
- CFHTLenS: Cosmological constraints from a combination of cosmic shear two-point and three-point correlations
- Minimizing the stochasticity of halos in large-scale structure surveys
- GREAT3 results I: systematic errors in shear estimation and the impact of real galaxy morphology
- Baryons and weak lensing power spectra
- Effect of Hot Baryons on the Weak-Lensing Shear Power Spectrum
- Calibrating the Baryon Oscillation Ruler for Matter and Halos
- Measuring Dark Matter Power Spectrum from Cosmic Microwave Background
- The removal of shear-ellipticity correlations from the cosmic shear signal via nulling techniques
- Cosmic Shear Measurements with DES Science Verification Data
- Evidence for Gravitational Lensing of the Cosmic Microwave Background Polarization from Cross-correlation with the Cosmic Infrared Background
- RCSLenS: The Red Cluster Sequence Lensing Survey
- CARS: The CFHTLS-Archive-Research Survey III. First detection of cosmic magnification in samples of normal high-z galaxies
- The Atacama Cosmology Telescope: Lensing of CMB Temperature and Polarization Derived from Cosmic Infrared Background Cross-Correlation
- A distortion of very--high--redshift galaxy number counts by gravitational lensing
- A Detection of Weak Lensing Magnification using Galaxy Sizes and Magnitudes
- On the complementarity of galaxy clustering with cosmic shear and flux magnification
- Inferring the mass of sub-millimetre galaxies by exploiting their gravitational magnification of background galaxies
- Learning from the Scatter in Type Ia Supernovae
- Mapping dark matter with cosmic magnification
- Cluster Magnification & the Mass-Richness Relation in CFHTLenS
- Wide-Field Lensing Mass Maps from DES Science Verification Data
- Cosmology from supernova magnification maps
- Self calibration of gravitational shear-galaxy intrinsic ellipticity correlation in weak lensing surveys
- HerMES: detection of cosmic magnification of sub-mm galaxies using angular cross-correlation
- Tomographic Magnification of Lyman Break Galaxies in The Deep Lens Survey
- Halo stochasticity in global clustering analysis
- Precision measurement of cosmic magnification from 21 cm emitting galaxies
- Weak Lensing with Sizes, Magnitudes and Shapes
- Detection of Enhancement in Number Densities of Background Galaxies due to Magnification by Massive Galaxy Clusters
- Combining Size and Shape in Weak Lensing
- Herschel-ATLAS/GAMA: SDSS cross-correlation induced by weak lensing
- Self-Calibration Technique for 3-point Intrinsic Alignment Correlations in Weak Lensing Surveys
- Self-Calibration for 3-point Intrinsic Alignment Auto-Correlations in Weak Lensing Surveys
- Magnification of Photometric LRGs by Foreground LRGs and Clusters in SDSS
- Weak lensing reconstruction through cosmic magnification I: a minimal variance map reconstruction
- Perturbation theory for nonlinear halo power spectrum: the renormalized bias and halo bias
- Magnification as a Tool in Weak Lensing
- Cluster mass profile reconstruction with size and flux magnification on the HST STAGES survey
- Weak lensing reconstruction through cosmic magnification. II. Improved power spectrum determination and map-making
- Self-calibrating the gravitational shear-intrinsic ellipticity-intrinsic ellipticity (GII) cross-correlation
- Diagnosing multiplicative error by lensing magnification of type Ia supernovae
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- KiDS-1000: cross-correlation with Planck cosmic microwave background lensing and intrinsic alignment removal with self-calibration
- Detection of Cosmic Magnification via Galaxy Shear -- Galaxy Number Density Correlation from HSC Survey Data
- Non-negative matrix factorization for self-calibration of photometric redshift scatter in weak lensing surveys
- Weak lensing power spectrum reconstruction by counting galaxies.-- II: Improving the ABS method with the shift parameter
- A method of weak lensing reconstruction through cosmic magnification with multi-band photometry information
- Weak Lensing Magnification Reconstruction with the Modified Internal Linear Combination Method
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