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 ...
متن کاملExothermic dark matter
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. We propose a novel mechanism for dark matter to explain the observed annual modulation signal at DAMA/LIBRA which a...
متن کاملInverted dipole feature in directional detection of exothermic dark matter
Directional dark matter detection attempts to measure the direction of motion of nuclei recoiling after having interacted with dark matter particles in the halo of our Galaxy. Due to Earth’s motion with respect to the Galaxy, the dark matter flux is concentrated around a preferential direction. An anisotropy in the recoil direction rate is expected as an unmistakable signature of dark matter. T...
متن کاملThe Dark Matter Problem in Disk Galaxies
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...
متن کاملDark Matter Halos and Disk Rotation Curves
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: Journal of Cosmology and Astroparticle Physics
سال: 2013
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2013/10/058