Non-self-similar clustering of galaxies

Abstract

view Abstract Citations (12) References (12) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Non--Self-similar Clustering of Galaxies Gramann, Mirt Abstract The influence of large-scale density fluctuations on the evolution of small-scale clustering of galaxies is examined. To investigate the fully nonlinear regime we ran N-body simulations. Numerical results show that the evolution of clustering of galaxies strongly depends on the transition scale of the power spectrum. For a two-dimensional power spectrum with n = -1, the wavelength on which density fluctuations go nonlinear is determined by the value of (λ_t_,λdelta_)^1/2^, where λ_t_ is the transition scale of the power spectrum, and λ_delta_ is the length scale on which the rms amplitude of the density becomes equal to unity. We analyze the variance of the power spectrum and potential field in different subsamples of the simulations. To investigate the potential field using observational data, the sample size must be at least of the order of the transition scale in the power spectrum. Publication: The Astrophysical Journal Pub Date: December 1992 DOI: 10.1086/172034 Bibcode: 1992ApJ...401...19G Keywords: Cosmology; Galactic Clusters; Many Body Problem; Computerized Simulation; Power Spectra; Relic Radiation; Spatial Distribution; Astrophysics; COSMOLOGY: THEORY; GALAXIES: CLUSTERING full text sources ADS |