A DWT Power Spectrum Analysis of PSCz Galaxies
Yang, Xiao-Hu; Feng, Long-Long; Chu, Yao-Quan; Yang, Xiao-Hu; Center for Astrophysics, University of Science and Technology of China, Hefei 230026; National Astronomical Observatories, Chinese Academy of Science, Beijing 100012; Feng, Long-Long; Center for Astrophysics, University of Science and Technology of China, Hefei 230026; National Astronomical Observatories, Chinese Academy of Science, Beijing 100012; Chu, Yao-Quan; Center for Astrophysics, University of Science and Technology of China, Hefei 230026; National Astronomical Observatories, Chinese Academy of Science, Beijing 100012
Журнал:
Chinese Journal of Astronomy and Astrophysics
Дата:
2001-06-01
Аннотация:
The power spectrum estimator based on the Discrete Wavelet Transformation (DWT) is applied to detect the clustering power in the IRAS Point Source Catalog Redshift Survey (PSCz). Comparison with mock samples extracted from N-body simulation shows that the DWT power spectrum estimator could provide a robust measurement of banded fluctuation power over a range of wavenumbers 0.1 ∼ 2.0 h Mpc<sup>−1</sup>. We have fitted three typical CDM models (SCDM, τCDM and ΛCDM) using the Peacock-Dodds formula including non-linear evolution and redshift distortion. We find that, our results are in good agreement with other statistical measurements of the PSCz.
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