A DWT power spectrum analysis of PSCz galaxies

The power spectrum estimator based on the Discrete Wavelet Transformation ( DWT) is applied to detect the clustering power in the IRAS Point Source Cat alog 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 similar to 2.0 h Mpc(-1). We have fitted three typical CDM models (SCD M, tau CDM and ACDM) using the Peacock-Dodds formula including non-linear e volution and redshift distortion. We find that, our results are in good agr eement with other statistical measurements of the PSCz.