Merging rates inside large-scale structures

Details Merging rates inside large-scale structures Merging rates inside large-scale structures

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...436..559m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 436, no. 2, p. 559-564

Mathematics

Logic

7

Astronomical Models, Cosmology, Galactic Clusters, Galactic Evolution, Interacting Galaxies, Many Body Problem, Computerized Simulation, Mathematical Models

Scientific paper

We use data from cosmological N-body simulations to determine amplitude and time evolution of the galaxy number density and relative velocity inside large-scale filamentary structures. We use the above determinations in analytical formulas to evaluate the galaxy merging rate in such environments where most of the galaxies are found. The resulting rate does not decrease with time (as it would in a Hubble expanding field) and is of order of approximately 5-10/Gyr much greater than Ho exp -1 so that the evolution of galaxy statistics can be significantly affected by binary aggregations.

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