Window Effect in the Power Spectrum Analysis of a Galaxy Redshift Survey

Takahiro Sato, Gert Hütsi, Gen Nakamura, Kazuhiro Yamamoto

Graduate School of Physical Sciences, Hiroshima University, Higashi-Hiroshima, Japan.
Tartu Observatory, T?revere, Estonia.

DOI: 10.4236/ijaa.2013.33029                

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.

Keywords

Cosmology; Large-Scale Structure of Universe

Conflicts of Interest

The authors declare no conflicts of interest.

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