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首页> 外文期刊>General Relativity and Gravitation: GRG Journal >The spacetime associated with galactic dark matter halos
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The spacetime associated with galactic dark matter halos

机译:与银河暗物质晕有关的时空

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摘要

We show how an adequate post-Newtonian generalization can be obtained for Newtonian dark matter halos associated with an empiric density profile. Applying this approach to halos that follow from the well known numerical simulations of Navarro, Frenk and White (NFW), we derive all dynamical variables and show that NFW halos approximately follow an ideal gas type of equation of state which fits very well to a polytropic relation in the region outside the core. This fact suggests that "outer" regions of NFW halos might be related to equilibrium states in the non-extensive Statistical Mechanics formalism proposed by Tsallis.
机译:我们展示了如何为与经验密度分布相关的牛顿暗物质晕获得足够的后牛顿概化。将这种方法应用于光晕,该光晕是根据Navarro,Frenk和White(NFW)的著名数值模拟得出的,我们得出了所有动态变量,并表明NFW光晕大致遵循理想气体类型的状态方程,非常适合多变核心以外区域的关系。这个事实表明,在Tsallis提出的非扩展统计力学形式主义中,NFW光晕的“外部”区域可能与平衡状态有关。

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