Computer Science – Numerical Analysis
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...391..423s&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 391, no. 2, June 1, 1992, p. 423-428.
Computer Science
Numerical Analysis
13
Cosmology, Galactic Clusters, Gravitational Effects, Thermodynamic Equilibrium, Adiabatic Conditions, Galactic Evolution, Kinetic Energy, Numerical Analysis, Temperature Dependence
Scientific paper
The rate of gravitational galaxy clustering is considered within the framework of the simple but fundamental case when the initial distribution of galaxy positions is close to Poisson and most of the matter is closely associated with the galaxies. Simple gravitational clustering in an expanding universe is found to evolve along an adiabat of the equation of state which includes gravitational interactions. The faster the universe expands relative to its gravitational clustering time scale, the better this adiabatic approximation becomes. This generalizes the well-known result that a homogeneous unclustered perfect gas in an expanding universe evolves along an adiabat of the perfect gas equation of state. The evolving clustering is characterized. There is a critical value of 0.8604 at which clustering dominates the equation of state and the specific heat at constant volume becomes negative. Subsequent growth of clustering slows appreciably. Numerical N-body experiments are consistent with these properties.
No associations
LandOfFree
The rate of gravitational galaxy clustering does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The rate of gravitational galaxy clustering, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The rate of gravitational galaxy clustering will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1199761