Coupling of modes of cosmological mass density fluctuations
Abstract
Cosmological mass density fluctuations are described by their connected correlation functions. Assuming an Omega = 1 universe with Gaussian primordial fluctuations that have a Zeldovich power spectrum, the authors discuss the form of the connected correlations induced by nonlinearities in the time evolution. Assuming cold dark matter the authors compute the first five moments of the probability distribution for the mass density fluctuations averaged over a Gaussian ball.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- December 1986
- DOI:
- 10.1086/164749
- Bibcode:
- 1986ApJ...311....6G
- Keywords:
-
- Cosmology;
- Density Distribution;
- Fluctuation Theory;
- Galactic Clusters;
- Mass Distribution;
- Space Density;
- Coupled Modes;
- Dark Matter;
- Normal Density Functions;
- Power Spectra;
- Probability Distribution Functions;
- Astrophysics;
- BOW WAVES;
- FLOW VELOCITY;
- GIACOBINI-ZINNER COMET;
- MAGNETIC FIELDS;
- PLASMA WAVES;
- INTERNATIONAL SUN EARTH EXPLORER 3;
- SHOCK WAVES;
- SOLAR WIND;
- SUBSONIC FLOW;
- SUPERSONIC FLOW;
- WAVE PROPAGATION