Catalog-level blinding on the bispectrum for DESI-like galaxy surveys

Abstract

We evaluate the performance of the catalog-level blind analysis technique (blinding) presented in Brieden et al. (2020) in the context of a fixed template power spectrum and bispectrum analysis. This blinding scheme, which is tailored for galaxy redshift surveys similar to the Dark Energy Spectroscopic Instrument (DESI), has two components: the so-called "AP blinding" (concerning the dilation parameters ${\alpha }_{\parallel },{\alpha }_{\perp }$) and "RSD blinding'' (redshift space distortions, affecting the growth rate parameter $f$). Through extensive testing, including checks for the RSD part in cubic boxes, the impact of AP blinding on mocks with realistic survey sky coverage, and the implementation of a full AP+RSD blinding pipeline, our analysis demonstrates the effectiveness of the technique in preserving the integrity of cosmological parameter estimation when the analysis includes the bispectrum statistic. We emphasize the critical role of sophisticated -- and difficult to accidentally unblind -- blinding methods in precision cosmology.

References in corpus (25)

• Array Programming with NumPy
• The Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package
• The DESI Experiment Part I: Science,Targeting, and Survey Design
• Why your model parameter confidences might be too optimistic -- unbiased estimation of the inverse covariance matrix
• The Effective Field Theory of Cosmological Large Scale Structures
• Overview of the Instrumentation for the Dark Energy Spectroscopic Instrument
• On the Robustness of the Acoustic Scale in the Low-Redshift Clustering of Matter
• The Early Data Release of the Dark Energy Spectroscopic Instrument
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: measurement of the BAO and growth rate of structure of the luminous red galaxy sample from the anisotropic correlation function between redshifts 0.6 and 1
• SPT-3G: A Next-Generation Cosmic Microwave Background Polarization Experiment on the South Pole Telescope
• The Spectroscopic Data Processing Pipeline for the Dark Energy Spectroscopic Instrument
• Target Selection and Validation of DESI Luminous Red Galaxies
• The DESI Experiment Part II: Instrument Design
• AbacusSummit: A Massive Set of High-Accuracy, High-Resolution $N$-Body Simulations
• The Robotic Multi-Object Focal Plane System of the Dark Energy Spectroscopic Instrument (DESI)
• Understanding higher-order nonlocal halo bias at large scales by combining the power spectrum with the bispectrum
• Reconstructing Baryon Oscillations: A Lagrangian Theory Perspective
• KiDS+VIKING-450 and DES-Y1 combined: Mitigating baryon feedback uncertainty with COSEBIs
• A blinded determination of $H_0$ from low-redshift Type Ia supernovae, calibrated by Cepheid variables
• The BOSS bispectrum analysis at one loop from the Effective Field Theory of Large-Scale Structure
• Efficient Reconstruction of Linear Baryon Acoustic Oscillations in Galaxy Surveys
• Dark matter and halo bispectrum in redshift space: theory and applications
• Bispectrum-window convolution via Hankel transform
• A blinding solution for inference from astronomical data
• GEO-FPT: a model of the galaxy bispectrum at mildly non-linear scales

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• DESI 2024 V: Full-Shape Galaxy Clustering from Galaxies and Quasars
• Dark Energy Survey Year 3 Results: Cosmological constraints from second and third-order shear statistics