Cosmological Density Distribution Function from the Ellipsoidal Collapse Model in Real Space
نویسندگان
چکیده
منابع مشابه
Cosmological Density Distribution Function from the Ellipsoidal Collapse Model in Real Space
We calculate the one-point probability distribution function (PDF) for cosmic density δ in non-linear regime of the gravitational evolution. Under the local approximation that the evolution of cosmic fluid fields can be characterized by the Lagrangian local dynamics with finite degrees of freedom, the analytic expressions of PDF are derived taking account of the smoothing effect. The validity a...
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We present a general framework to treat the evolution of one-point probability distribution function (PDF) for cosmic density δ and velocity-divergence fields θ. In particular, we derive an evolution equation for the one-point PDFs and consider the stochastic nature associated with these quantities. Under the local approximation that the evolution of cosmic fluid fields can be characterized by ...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2004
ISSN: 0004-637X,1538-4357
DOI: 10.1086/420762