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arXiv 1402.0700astro-ph.GA
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星系中暗物质的分布:量子处理

On the distribution of dark matter in galaxies: quantum treatments

Carlos R. Argüelles, Remo Ruffini, Ivan Siutsou, Bernardo Fraga

摘要:

考虑了用无碰撞自引力量子粒子的平衡位形来模拟星系中暗物质分布的问题。本文首先总结了Ruffini和Stella(1983)提出的热力学平衡状态下的牛顿自引力费米气体模型,它是King模型的推广。我们进一步回顾了由Gao,Merafina和Ruffini(1990)发展的前一个模型的扩展,在广义相对论中,对中心($θ_0$)任何程度的费米子简并进行了扩展。最后,我们在这里首次提出的解决方案的密度分布和旋转曲线对应的高等。模型,具有确定的质量$M_h$和圆速度$v_h$,在晕半径$r_h$的配置,典型的螺旋星系。这种处理使我们能够确定一个新的核心晕形态的暗物质的配置文件,以及一个新的粒子质量绑定与他们有关。

英文摘要:

The problem of modeling the distribution of dark matter in galaxies in terms of equilibrium configurations of collisionless self-gravitating quantum particles is considered. We first summarize the pioneering model of a Newtonian self-gravitating Fermi gas in thermodynamic equilibrium developed by Ruffini and Stella (1983), which is shown to be the generalization of the King model for fermions. We further review the extension of the former model developed by Gao, Merafina and Ruffini (1990), done for any degree of fermion degeneracy at the center ($θ_0$), within general relativity. Finally, we present here for the first time the solutions of the density profiles and rotation curves corresponding to the Gao et. al. model, which have a definite mass $M_h$ and circular velocity $v_h$, at the halo radius $r_h$ of the configurations, typical of spiral galaxies. This treatment allow us to determine a novel core-halo morphology for the dark matter profiles, as well as a novel particle mass bound associated with them.

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