Distribution Functions of Dark Matter Halos
ORAL
Abstract
The spherical NFW profile provides a good approximation to the density distributions of dark matter halos. In dynamical equilibrium, this density profile should correspond to a stationary distribution function of dark matter in phase space. We derive this distribution function and show that it is a good match to those obtained from N-body simulations. Additionally, we demonstrate a simple scaling relationship between R(E), the inversion of the potential energy, and the distribution function, and we show how this scaling can be used to well approximate the distribution function.
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Publication: The research presented presented here is being prepared for a pair of papers, to be submitted in the next few weeks.
Presenters
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Axel Gross
University of Minnesota
Authors
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Axel Gross
University of Minnesota
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Yong-Zhong Qian
University of Minnesota
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Zhaozhou Li
The Hebrew University of Jerusalem