Gravitational Collapse in an Expanding Universe: Asymptotic Self-similar Solutions

Details Gravitational Collapse in an Expanding Universe: Asymptotic Self-similar Solutions Gravitational Collapse in an Expanding Universe: Asymptotic Self-similar Solutions

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...416..410z&link_type=abstract

Astrophysical Journal v.416, p.410

Astronomy and Astrophysics

Astronomy

29

Cosmology: Large-Scale Structure Of Universe, Cosmology: Theory, Galaxies: Formation

Scientific paper

The collapse and virialization of self-similar spherical density perturbations to a flat Einstein e Sitter universe is investigated and in particular the asymptotic similarity solutions. Previous calculations of Gunn and Fillmore & Goldreich of the asymptotic solutions are improved here and the collapse factor of a given spherical shell is calculated. Within the framework of the asymptotic behavior exact analytical solutions are obtained.

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