Wavelet Analysis of One-Dimensional Cosmological Density Fluctuations

Details Wavelet Analysis of One-Dimensional Cosmological Density Fluctuations Wavelet Analysis of One-Dimensional Cosmological Density Fluctuations

1995-09-20

arxiv.org/abs/astro-ph/9509102v2

Prog.Theor.Phys. 95 (1996) 1059-1078

Astronomy and Astrophysics

Astrophysics

13 pages, Latex, figures available upon request (27 postscript files), minor Latex error corrected

Scientific paper

10.1143/PTP.95.1059

Wavelet analysis is proposed as a new tool for studying the large-scale structure formation of the universe. To reveal its usefulness, the wavelet decomposition of one-dimensional cosmological density fluctuations is performed. In contrast with the Fourier analysis, the wavelet analysis has advantage of its ability to keep the information for location of local density peaks in addition to that for their scales. The wavelet decomposition of evolving density fluctuations with various initial conditions is examined. By comparing the wavelet analysis with the usual Fourier analysis, we conclude that the wavelet analysis is promising as the data analysis method for the Sloan Digital Sky Survey and COBE.

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