Hierarchical structure in the distribution of galaxies

Abstract

view Abstract Citations (24) References (22) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Hierarchical structure in the distribution of galaxies Schulman, Lawrence S. ; Seiden, Philip E. Abstract The distribution of galaxies has a hierarchical structure with power-law correlations. This is usually thought to arise from gravity alone acting on an originally uniform distributioon. If, however, the original process of galaxy formation occurs through the stimulated birth of one galaxy due to a nearby recently formed galaxy, and if this process occurs near its percolation threshold, then a hierarchical structure with power-law correlations arises at the time of galaxy formation. If subsequent gravitational evolution within an expanding cosmology is such as to retain power-law correlations, the initial r exp -1 dropoff can steepen to the observed r exp -1.8. The distribution of galaxies obtained by this process produces clustering and voids, as observed. Publication: The Astrophysical Journal Pub Date: December 1986 DOI: 10.1086/164748 Bibcode: 1986ApJ...311....1S Keywords: Galactic Structure; Mass Distribution; Correlation; Galactic Clusters; Galactic Evolution; Gravitation; Voids; Astrophysics; BETA FACTOR; ELECTRON DENSITY PROFILES; GIACOBINI-ZINNER COMET; PLASMA WAVES; WAVE PROPAGATION; INTERNATIONAL SUN EARTH EXPLORER 3; MAGNETIC FIELDS; MAGNETOHYDRODYNAMIC STABILITY; PLASMA TURBULENCE; PROPAGATION MODES; SOLAR WIND full text sources ADS |