scholarly journals Evolution of the Phase‐Space Density in Dark Matter Halos

2007 ◽  
Vol 671 (2) ◽  
pp. 1108-1114 ◽  
Author(s):  
Yehuda Hoffman ◽  
Emilio Romano‐Diaz ◽  
Isaac Shlosman ◽  
Clayton Heller
Keyword(s):  
Dark Matter ◽  
Phase Space ◽  
Phase Space Density ◽  
Dark Matter Halos ◽  
Space Density

scholarly journals DISTRIBUTION FUNCTION IN THE CENTER OF THE DARK MATTER HALO

2009 ◽  
Vol 18 (03) ◽  
pp. 477-484
Author(s):  
DING MA ◽  
PING HE
Keyword(s):  
Dark Matter ◽  
Distribution Function ◽  
Phase Space ◽  
Velocity Dispersion ◽  
Anisotropy Parameter ◽  
Dark Matter Halo ◽  
Phase Space Density ◽  
Dark Matter Halos ◽  
Density Profiles ◽  
Space Density

N-body simulations of dark matter halos show that the density profiles of the halos behave as ρ(r) ∝ r-α(r), where the density logarithmic slope α ≃ 1–1.5 in the center and α ≃ 3–4 in the outer parts of the halos. However, some observations are not in agreement with simulations in the very central region of the halos. The simulations also show that the velocity dispersion anisotropy parameter β ≈ 0 in the inner part of the halo and the so-called pseudo–phase-space density ρ/σ3 behaves as a power law in radius r. With these results in mind, we study the distribution function and the pseudo–phase-space density ρ/σ3 of the center of dark matter halos and find that they are closely related.

scholarly journals The Phase-space Density Distribution of Dark Matter Halos

2004 ◽  
Author(s):  
Liliya L. R. Williams ◽  
Crystal Austin ◽  
Eric Barnes ◽  
Arif Babul ◽  
Julianne Dalcanton
Keyword(s):  
Dark Matter ◽  
Phase Space ◽  
Density Distribution ◽  
Phase Space Density ◽  
Dark Matter Halos ◽  
Space Density

scholarly journals NIHAO project II: halo shape, phase-space density and velocity distribution of dark matter in galaxy formation simulations

2016 ◽  
Vol 462 (1) ◽  
pp. 663-680 ◽  
Author(s):  
Iryna Butsky ◽  
Andrea V. Macciò ◽  
Aaron A. Dutton ◽  
Liang Wang ◽  
Aura Obreja ◽  
...  
Keyword(s):  
Dark Matter ◽  
Phase Space ◽  
Velocity Distribution ◽  
Galaxy Formation ◽  
Phase Space Density ◽  
Space Density

scholarly journals The density and pseudo-phase-space density profiles of cold dark matter haloes

2011 ◽  
Vol 415 (4) ◽  
pp. 3895-3902 ◽  
Author(s):  
Aaron D. Ludlow ◽  
Julio F. Navarro ◽  
Simon D. M. White ◽  
Michael Boylan-Kolchin ◽  
Volker Springel ◽  
...  
Keyword(s):  
Dark Matter ◽  
Phase Space ◽  
Cold Dark Matter ◽  
Phase Space Density ◽  
Density Profiles ◽  
Space Density
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