Power Spectrum Tomography with Weak Lensing

1999/04/13 by Wayne Hu · 15 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #astro-ph

paper · pdf · doi:10.1086/312210

published as Astrophys.J.522:L21-L24,1999 · 4 pages, 3 figures, submitted to ApJ Lett

arxiv created 1999/04/13 · openalex publication_date 1999/09/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31

Abstract

Upcoming weak lensing surveys on wide fields will provide the opportunity to reconstruct the structure along the line of sight tomographically by employing photometric redshift information about the source distribution. We define power spectrum statistics (including cross-correlation between redshift bins), quantify the improvement that redshift information can make in cosmological parameter estimation, and discuss ways to optimize the redshift binning. We find that within the adiabatic cold dark matter class of models, crude tomography using two or three redshift bins is sufficient to extract most of the information and improve, by up to an order of magnitude, the measurements of cosmological parameters that determine the growth rate of structure.

Citations

• Power Spectrum Correlations Induced by Nonlinear Clustering

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