An Improved Semianalytical Spherical Collapse Model for Nonlinear Density Evolution
نویسندگان
چکیده
منابع مشابه
Nonlinear density evolution from an improved spherical collapse model
We investigate the evolution of nonlinear density perturbations by taking into account the effects of shear and angular momentum of the system. Starting from the standard spherical top hat model in which these terms are ignored, we introduce a physically motivated closure condition which specifies the dependence of these terms on δ. The modified equation can be used to model the behavior of an ...
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ژورنال
عنوان ژورنال: The Astrophysical Journal Supplement Series
سال: 2008
ISSN: 0067-0049,1538-4365
DOI: 10.1086/522339