A quantitative measure of phase correlations in density fields

Details A quantitative measure of phase correlations in density fields A quantitative measure of phase correlations in density fields

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...377...29s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 377, Aug. 10, 1991, p. 29-35. Research supported by DOE.

Statistics

Computation

39

Correlation, Density Distribution, Galactic Clusters, Gravitational Effects, Black Holes (Astronomy), Computational Astrophysics, Power Spectra, String Theory

Scientific paper

A quantitative measure of the phase correlations in a density field is presented based on the location of the maxima of the Fourier components of that field. It is found that this measue can easily detect non-Gaussian behavior either in artificially constructed density fields or those that become non-Gaussian from gravitational clustering of Gaussian initial conditions. It is found that different initial power spectra produce somewhat distinguishable signals, and the signals are robust against sparse sampling.

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