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The differential energy distribution of the universal density profile of dark halo

Published online by Cambridge University Press:  26 May 2016

Asao Habe  and
Chiaki Hanyu
Asao Habe
Affiliation:
DIvision of Physics, Hokkaido University, Kita8 Nishi10, Kita-ku, Sapporo, Japan
Chiaki Hanyu
Affiliation:
DIvision of Physics, Hokkaido University, Kita8 Nishi10, Kita-ku, Sapporo, Japan

Abstract

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We study the differential energy distribution of dark matter halos, carrying out cosmological N-body simulation. From our simulation, we give an analytical formula of the differential energy distribution of dark matter in the halos. Density distribution from the analytical formula is consistent with the Navarro, Frenk, and White (NFW) profile. We find that a parameter in our analytical formula of differential energy distribution is related with the slope of inner cusp of dark halo. We discuss physical reason of form of the analytical formula.

Type
Posters
Information
Symposium - International Astronomical Union , Volume 208: Astrophysical Supercomputing using Particle Simulations , 2003 , pp. 397 - 398
Copyright
Copyright © Astronomical Society of the Pacific 2003 

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