On the bin sensitivity of the transverse BAO
astro-ph.CO
Submitted: 2025-11-23
Updated: 2026-07-31
Comments: Accepted for publication by JCAP. 35 pages, 27 figures
DOI: 10.1088/1475-7516/2026/09/088
License: http://creativecommons.org/licenses/by/4.0/
The gist: We investigate the transverse BAO projection effect caused by redshift binning uncertainty (z c).
Terminology
Abstract
We investigate the transverse BAO projection effect caused by redshift binning uncertainty (z c). For SKA HI and DESI LRG surveys, we compare Gaussian, top-hat, and semi-Gaussian bins over widths 0.01<σ z<0.1, and propose a statistical correction using adjacent redshifts. The semi-Gaussian bin best recovers the BAO signal for σ z<0.04, despite higher shot noise. Constraints are survey-dependent: Gaussian binning is weakest for SKA, while for DESI semi-Gaussian is tightest for σ z<0.04 (otherwise comparable). The semi-Gaussian scheme offers the optimal balance between cosmological parameter constraints and BAO fidelity, making it robust for multi-probe analyses.
Sources
- The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in the Data Release 9 Spectroscopic Galaxy Sample
- The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
- The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Cosmological Implications from two Decades of Spectroscopic Surveys at the Apache Point observatory
- Measuring baryon acoustic oscillations with angular two-point correlation function
- Data Release 1 of the Dark Energy Spectroscopic Instrument
- Cosmology with the Wide-Field Infrared Survey Telescope -- Multi-Probe Strategies
- Angular BAO Measurements with the DESI DR1 BGS Sample
- Baryon Acoustic Oscillations in tomographic Angular Density and Redshift Fluctuations
- Angular Correlation Function from sample covariance with BOSS and eBOSS LRG
Related papers
- Angular clustering and bias of photometric quasars in the Kilo-Degree Survey Data Release 4
- A Novel kinetic Sunyaev-Zel'dovich Estimator for Electron-Electron Correlations
- Magnetic fields at the dawn of structure formation I. The CARLA J1510+5958 proto-cluster
- Dark Energy Survey Year 6 Results: Weak Lensing and Galaxy Clustering Cosmological Analysis Framework
- Exploring the Impact of Systematic Bias in Type Ia Supernova Cosmology Across Diverse Dark Energy Parametrizations
- Non-Gaussian Galaxy Stochasticity and the Noise-Field Formulation