Window effect in the power spectrum analysis of a galaxy redshift survey

Abstract

We investigate the effect of the window function on the multipole power spectrum in two different ways. First, we consider the convolved power spectrum including the window effect, which is obtained by following the familiar (FKP) method developed by Feldman, Kaiser and Peacock. We show how the convolved multipole power spectrum is related to the original power spectrum, using the multipole moments of the window function. Second, we investigate the deconvolved power spectrum, which is obtained by using the Fourier deconvolution theorem. In the second approach, we measure the multipole power spectrum deconvolved from the window effect. We demonstrate how to deal with the window effect in these two approaches, applying them to the Sloan Digital Sky Survey (SDSS) luminous red galaxy (LRG) sample.

22 pages, 11 figures, references added

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• Testing LSST Dither Strategies for Survey Uniformity and Large-Scale Structure Systematics
• Measurement of $H(z)$ and $D_A(z)$ from the two-dimensional power spectrum of Sloan Digital Sky Survey luminous red galaxies
• Power spectrum in the presence of large-scale overdensity and tidal fields: breaking azimuthal symmetry
• An Optimally Weighted Estimator of the Linear Power Spectrum Disentangling the Growth of Density Perturbations Across Galaxy Surveys
• The impact of the redshift-dependent selection effect of halos on the redshift-space power spectrum
• An empirical nonlinear power spectrum overdensity-response