Why is the Hubble flow so quiet?

Abstract

The cosmological vacuum, which is perfectly uniform, dominates by density over all the forms of cosmic matter. It makes the Universe be actually more uniform than it could be seen from the visible picture of the highly non-uniform matter distribution, especially inside the observed cell of uniformity (100-150 Mpc). This uniformity reveals itself in the structure of the Hubble matter flow which extends over a giant range of cosmic space scales -- from few Mpc to a thousand Mpc, -- preserving its kinematical identity. According to Sandage (1999), this flow is mysteriously regular and quiet even deep inside the cell of uniformity. An answer we propose to the question in the title above is as follows: This is most probably because the flow is dynamically controlled by the cosmological vacuum. An additional conjecture of cosmological intermittency, that addresses a complex statistical structure of initial chaotic perturbations, is also suggested in this context.

18 pages, LaTex, no figures. An invited talk at Cosmology Meeting of COSPAR-2000, July 22-23, 2000, Warsaw; to be published in Adv. Space Res

References in corpus (6)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Where is the Dark Matter?
• Evidence for a Positive Cosmological Constant from Flows of Galaxies and Distant Supernovae
• On the fractal structure of galaxy distribution and its implications for cosmology
• The radial space distribution of KLUN-galaxies up to 200 Mpc: incompleteness or evidence for the behaviour predicted by fractal dimension ~ 2?

Cited by in corpus (3)

• Fractal Approach to Large-Scale Galaxy Distribution
• Dark and visible matter distribution in Coma cluster: theory vs observations
• Side Influences on the Operation of Space-Based Interferometers, as Inferred from LLR Data