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

• 作者: Gen Nakamura Gert Hütsi Kazuhiro Yamamoto Takahiro Sato
• 来源期刊: 天文学与天体物理学国际期刊(英文)
• 学科: 地球科学
• 关键词: COSMOLOGY LARGE-SCALE STRUCTURE of UNIVERSE
• 年，卷（期）: 2013,（3）
• 页码范围: 243-256
• 页数: 14页
• 分类号: P1

摘要

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.