A Quantitative Measure of Phase Correlations in Density Fields
Abstract
We present a quantitative measure of the phase correlations in a density field based on the location of the maxima of the Fourier components of that field. We find that our measure 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. We find that different initial power spectra produce somewhat distinguishable signals, and the signals are robust against sparse sampling.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- August 1991
- DOI:
- 10.1086/170333
- Bibcode:
- 1991ApJ...377...29S
- Keywords:
-
- Correlation;
- Density Distribution;
- Galactic Clusters;
- Gravitational Effects;
- Black Holes (Astronomy);
- Computational Astrophysics;
- Power Spectra;
- String Theory;
- Astrophysics;
- GALAXIES: CLUSTERING;
- NUMERICAL METHODS