How relaxed is the distribution of galaxies?

Details How relaxed is the distribution of galaxies? How relaxed is the distribution of galaxies?

Feb 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...301....1c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 301, Feb. 1, 1986, p. 1-6.

Astronomy and Astrophysics

Astrophysics

47

Cosmology, Distribution Functions, Galactic Clusters, Frequency Distribution, Hydrodynamics, Relaxation (Mechanics), Thermodynamics

Scientific paper

The authors compare the distribution functions f(N) predicted for a quasi-relaxed gravitating system with the observed distributions of galaxies in the Zwicky catalog. There is good agreement between them. The value of the ratio of gravitational correlation energy to thermal energy which best fits the observations is b = 0.70±0.05. This agrees with the values found previously in N-body computer experiments. It suggests that the observed distribution of galaxies is mostly the relaxed result of gravitational clustering.

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