Anisotropic models of dark halos

N.Ya. Sotnikova, S.A. Rodionov

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

Abstract

An iterative approach is used to construct spherically symmetric equilibrium models with an anisotropic velocity distribution. The potentialities of the method have been tested on models with known distribution functions, the Osipkov-Merritt models. It is shown that models that differ significantly from the Osipkov-Merritt models can be constructed. An N-body model of a dark halo with a density distribution that approximates the results of cosmological simulations (the Navarro-Frenk-White model) has been constructed. The anisotropy profile has been taken to be similar to that yielded by cosmological simulations. The constructed models can serve as direct input data for investigating the dynamics and stability of such systems in N-body simulations. © 2008 Pleiades Publishing, Ltd.
Original languageEnglish
Pages (from-to)664-674
JournalAstronomy Letters
Volume34
Issue number10
DOIs
StatePublished - 2008

Cite this

Sotnikova, N.Ya. ; Rodionov, S.A. / Anisotropic models of dark halos. In: Astronomy Letters. 2008 ; Vol. 34, No. 10. pp. 664-674.
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Anisotropic models of dark halos. / Sotnikova, N.Ya.; Rodionov, S.A.

In: Astronomy Letters, Vol. 34, No. 10, 2008, p. 664-674.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Anisotropic models of dark halos

AU - Sotnikova, N.Ya.

AU - Rodionov, S.A.

PY - 2008

Y1 - 2008

N2 - An iterative approach is used to construct spherically symmetric equilibrium models with an anisotropic velocity distribution. The potentialities of the method have been tested on models with known distribution functions, the Osipkov-Merritt models. It is shown that models that differ significantly from the Osipkov-Merritt models can be constructed. An N-body model of a dark halo with a density distribution that approximates the results of cosmological simulations (the Navarro-Frenk-White model) has been constructed. The anisotropy profile has been taken to be similar to that yielded by cosmological simulations. The constructed models can serve as direct input data for investigating the dynamics and stability of such systems in N-body simulations. © 2008 Pleiades Publishing, Ltd.

AB - An iterative approach is used to construct spherically symmetric equilibrium models with an anisotropic velocity distribution. The potentialities of the method have been tested on models with known distribution functions, the Osipkov-Merritt models. It is shown that models that differ significantly from the Osipkov-Merritt models can be constructed. An N-body model of a dark halo with a density distribution that approximates the results of cosmological simulations (the Navarro-Frenk-White model) has been constructed. The anisotropy profile has been taken to be similar to that yielded by cosmological simulations. The constructed models can serve as direct input data for investigating the dynamics and stability of such systems in N-body simulations. © 2008 Pleiades Publishing, Ltd.

U2 - 10.1134/S1063773708100022

DO - 10.1134/S1063773708100022

M3 - Article

VL - 34

SP - 664

EP - 674

JO - Astronomy Letters

JF - Astronomy Letters

SN - 1063-7737

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