暗物质子结构、暗丝和暗物质的组装
Dark Matter Substructure, Filaments and Assembling Disks
摘要：
本文综述了星系暗物质（DM）晕的一般性质，这些性质对重子动力学有直接的影响。具体来说，我们专注于重子和DM之间的相互动力学反馈影响磁盘的形成和演化，通过比较模型与重子和没有从相同的初始条件。重子被发现是能够修改的DM密度分布的内晕，导致等温的配置文件，而不是NFW尖点。这些可以通过随后在较低红移处的暗晕的动力学摩擦来消除。此外，暗晕似乎能有效地触发星系棒，并从盘中烧蚀冷气体，从而淬灭那里的恒星形成。
英文摘要：
We review some general properties of assembling galactic dark matter (DM) halos which have a direct effect on the baryon dynamics. Specifically, we focus on the mutual dynamical feedback between baryons and DM which influence disk formation and evolution, by comparing models with and without baryons evolved from identical initial conditions. Baryons are found to be capable of modifying the DM density profiles of inner halos, leading to isothermal profiles rather than the NFW cusps. Those can be leveled off by the subsequent dynamical friction of the subhalos at lower redshifts. Furthermore, subhalos appear efficient in triggering galactic bars and ablating cold gas from the disks, and therefore quenching of star formation there.
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