منابع مشابه
Exothermic Double-Disk Dark Matter
If a subdominant component of dark matter (DM) interacts via long-range dark force carriers it may cool and collapse to form complex structures within the Milky Way galaxy, such as a rotating dark disk. This scenario was proposed recently and termed “Double-Disk Dark Matter” (DDDM). In this paper we consider the possibility that DDDM remains in a cosmologically long-lived excited state and can ...
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In the generic CDM cosmogony, dark-matter halos emerge too lumpy and centrally concentrated to host observed galactic disks. Moreover, disks are predicted to be smaller than those observed. We argue that the resolution of these problems may lie with a combination of the effects of protogalactic disks which would have had a mass comparable to that of the inner dark halo and be plausibly non-axis...
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Cosmological N–body simulations have revealed a remarkable similarity in the structure of dark matter halos formed in hierarchically clustering universes. Regardless of halo mass, cosmological parameters, and power spectrum of initial density fluctuations, the spherically averaged density profiles of dark matter halos have a universal shape. The logarithmic slope of this profile is shallower th...
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ژورنال
عنوان ژورنال: Physics of the Dark Universe
سال: 2013
ISSN: 2212-6864
DOI: 10.1016/j.dark.2013.07.001