Evolution of cosmic structures in different environments in the quasispherical Szekeres model

Details Evolution of cosmic structures in different environments in the quasispherical Szekeres model Evolution of cosmic structures in different environments in the quasispherical Szekeres model

2006-10-10

arxiv.org/abs/astro-ph/0610292v2

Phys.Rev. D75 (2007) 043508

Astronomy and Astrophysics

Astrophysics

11 pages, 10 figures, accepted for publication in Physical Review D

Scientific paper

This paper investigates evolution of cosmic structures in different environments. For this purpose the quasispherical Szekeres model is employed. The Szekeres model is an exact solution of the Einstein field equations within which it is possible to describe more than one structure. In this way investigations of the evolution of the cosmic structures presented here can be freed from such assumptions as small value of the density contrast. Also, studying the evolution of two or three structures within one framework enables us to follow the interaction between these structures and their impact on the evolution. Main findings include a conclusion that small voids surrounded by large overdensities evolve slower than large, isolated voids do. On the other hand, large voids enhance the evolution of adjacent galaxy superclusters which evolve much faster than isolated superclusters

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