Self-similar secondary infall and accretion in an Einstein-de Sitter universe
@article{Bertschinger1985SelfsimilarSI,
title={Self-similar secondary infall and accretion in an Einstein-de Sitter universe},
author={Edmund Bertschinger},
journal={Astrophysical Journal Supplement Series},
year={1985},
volume={58},
pages={39-65}
}Similarity solutions have been found for secondary infall and accretion onto an initially overdense perturbation in an Einstein--de Sitter (..cap omega.. = 1) universe. After the initial collapse of a positive density perturbation, bound shells continue to turn around and fall in, with the radius of the shell currently turning around increasing as t/sup 8/9/ and the mass within this radius increasing as t/sup 2/3/. The secondary infall approaches a self-similar form, with the exact behavior…
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