The Impact of Tomographic Redshift Bin Width Errors on Cosmological Probes
arXiv:2104.03407 · doi:10.1093/mnras/stab3798
Abstract
Systematic errors in the galaxy redshift distribution can propagate to systematic errors in the derived cosmology. We characterize how the degenerate effects in tomographic bin widths and galaxy bias impart systematic errors on cosmology inference using observational data from the Deep Lens Survey. For this we use a combination of galaxy clustering and galaxy-galaxy lensing. We present two end-to-end analyses from the catalogue level to parameter estimation. We produce an initial cosmological inference using fiducial tomographic redshift bins derived from photometric redshifts, then compare this with a result where the redshift bins are empirically corrected using a set of spectroscopic redshifts. We find that the derived parameter goes from to upon correcting the n(z) errors in the second method.
arXiv comment13 pages, 9 figures
References in corpus (58)
- Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
- LSST: from Science Drivers to Reference Design and Anticipated Data Products
- Bayesian photometric redshift estimation
- Revising the Halofit Model for the Nonlinear Matter Power Spectrum
- Analytic model for galaxy and dark matter clustering
- Cosmology and Fundamental Physics with the Euclid Satellite
- LSST Science Book, Version 2.0
- Why your model parameter confidences might be too optimistic -- unbiased estimation of the inverse covariance matrix
- Cosmology from cosmic shear power spectra with Subaru Hyper Suprime-Cam first-year data
- Galaxies in the Hubble Ultra Deep Field: I. Detection, Multiband Photometry, Photometric Redshifts, and Morphology
- Weak lensing for precision cosmology
- CFHTLenS: Combined probe cosmological model comparison using 2D weak gravitational lensing
- The PRIsm MUlti-Object Survey (PRIMUS) I: Survey Overview and Characteristics
- CosmoSIS: modular cosmological parameter estimation
- Cosmological parameter constraints from galaxy-galaxy lensing and galaxy clustering with the SDSS DR7
- Effect of Photometric Redshift Uncertainties on Weak Lensing Tomography
- Cosmological constraints from cosmic shear two-point correlation functions with HSC survey first-year data
- Large Synoptic Survey Telescope: Overview
- redMaGiC: Selecting Luminous Red Galaxies from the DES Science Verification Data
- Dark Energy Survey Year 1 Results: Redshift distributions of the weak lensing source galaxies
- Calibrating the Nonlinear Matter Power Spectrum: Requirements for Future Weak Lensing Surveys
- The PRIsm MUlti-object Survey (PRIMUS). II. Data Reduction and Redshift Fitting
- Modelling baryonic feedback for survey cosmology
- Exploring the effects of galaxy formation on matter clustering through a library of simulation power spectra
- Improving lognormal models for cosmological fields
- Atmospheric gas dynamics in the Perseus cluster observed with Hitomi
- Growth of Cosmic Structure: Probing Dark Energy Beyond Expansion
- Cosmic shear results from the deep lens survey - I: Joint constraints on omega_m and sigma_8 with a two-dimensional analysis
- An algorithm for the direct reconstruction of the dark matter correlation function from weak lensing and galaxy clustering
- Principal Component Analysis of the Time- and Position-Dependent Point Spread Function of the Advanced Camera for Surveys
- Dark Energy Survey Year 1 Results: Multi-Probe Methodology and Simulated Likelihood Analyses
- Galaxy-galaxy lensing estimators and their covariance properties
- Catastrophic photometric redshift errors: weak lensing survey requirements
- Accounting for baryonic effects in cosmic shear tomography: Determining a minimal set of nuisance parameters using PCA
- The halo model as a versatile tool to predict intrinsic alignments
- Cosmic Shear Results from the Deep Lens Survey - II: Full Cosmological Parameter Constraints from Tomography
- Spectroscopic Needs for Imaging Dark Energy Experiments: Photometric Redshift Training and Calibration
- Towards Precision LSST Weak-Lensing Measurement - I: Impacts of Atmospheric Turbulence and Optical Aberration
- General Requirements on Matter Power Spectrum Predictions for Cosmology with Weak Lensing Tomography
- A General Study of the Influence of Catastrophic Photometric Redshift Errors on Cosmology with Cosmic Shear Tomography
- Cosmology from large scale galaxy clustering and galaxy-galaxy lensing with Dark Energy Survey Science Verification data
- Cosmology with the Large Synoptic Survey Telescope: an Overview
- SHELS: The Hectospec Lensing Survey
- A Unified Analysis of Four Cosmic Shear Surveys
- Error analysis of the photometric redshift tecnique
- Overconfidence in Photometric Redshift Estimation
- Tomographic Magnification of Lyman Break Galaxies in The Deep Lens Survey
- Improved Photometric Redshifts via Enhanced Estimates of System Response, Galaxy Templates, and Magnitude Priors
- Galaxy-Mass Correlations on 10 Mpc Scales in the Deep Lens Survey
- Constraints on Cosmology and Baryonic Feedback with the Deep Lens Survey Using Galaxy-Galaxy and Galaxy-Mass Power Spectra
- Improving Correlation Function Fitting with Ridge Regression: Application to Cross-Correlation Reconstruction
- Bayesian photometric redshifts of blended sources
- Minimising the impact of scale-dependent galaxy bias on the joint cosmological analysis of large scale structures
- Baryonic feedback measurement from KV450 cosmic shear analysis
- Ubercalibration of the Deep Lens Survey
- An Improved Photometric Calibration of the Sloan Digital Sky Survey Imaging Data
- Deep lensing with a twist: E and B modes in a field with multiple lenses
- Dark energy constraints and correlations with systematics from CFHTLS weak lensing, SNLS supernovae Ia and WMAP5