Resolving infall caustics in dark matter halos

被引：0
|
作者：
K. Dolag
A. D. Dolgov
I. I. Tkachev
机构：
[1] University Observatory Munich,Laboratory of Cosmology and Elementary Particles
[2] Max-Planck-Institut für Astrophysik,Dipartimento di Fisica
[3] Novosibirsk State University,Istituto Nazionale di Fisica Nucleare
[4] Universitá degli Studi di Ferrara,Institute for Nuclear Research
[5] Polo Scientifico e Tecnologico—Edificio C,undefined
[6] Sezione di Ferrara,undefined
[7] Polo Scientifico e Tecnologico—Edificio C,undefined
[8] Alikhanov Institute for Theoretical and Experimental Physics,undefined
[9] Russian Academy of Sciences,undefined
来源：
JETP Letters | 2013年 / 96卷
关键词：
Phase Space; JETP Letter; Dark Matter Particle; Galactic Halo; Dark Matter Halo;
D O I：
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中图分类号：
学科分类号：
摘要：
It has been found that the phase space of dark matter particles assembling a galactic halo in cosmological N-body simulations well defines the fine grained structure. Recently accreted particles form distinctive velocity streams with high density contrast. For a fixed observer position, these streams lead to peaks in the velocity distribution. Overall structure is close to that emerging in the secondary infall model.
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页码：754 / 758
页数：4
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