Results 21 to 30 of about 111,737 (267)
A DERIVATION OF (HALF) THE DARK MATTER DISTRIBUTION FUNCTION [PDF]
The Astrophysical Journal, 2012 All dark matter structures appear to follow a set of universalities, such as phase-space density or velocity anisotropy profiles, however, the origin of these universalities remains a mystery. Any equilibrated dark matter structure can be fully described by two functions, namely the radial and the tangential velocity distribution functions (VDF), and ...
Hansen, Steen Harle, Sparre, Martin
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On the distribution of dark matter in galaxies: Quantum treatments [PDF]
Journal of the Korean Physical Society, 2014 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 ...
Argüelles, Carlos R. +3 more
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Imprint of Pressure on Characteristic Dark Matter Profiles: The Case of ESO0140040
Galaxies, 2020 We investigate the dark matter distribution in the spiral galaxy ESO0140040, employing the most widely used density profiles: the pseudo-isothermal, exponential sphere, Burkert, Navarro-Frenk-White, Moore and Einasto profiles.
Kuantay Boshkayev +4 more
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Radial dependence of the dark matter distribution in M33 [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 The stellar and gaseous mass distributions, as well as the extended rotation curve in the nearby galaxy M33 are used to derive the radial distribution of dark matter density in the halo and to test cosmological models of galaxy formation and evolution. Two methods are examined to constrain dark mass density profiles.
Lopez Fune E., Salucci P., Corbelli E.
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The distribution of dark matter in galaxies [PDF]
The Astronomy and Astrophysics Review, 2019 60 pages, 28 Figures ~220 refs. Invited review for The Astronomy and Astrophysics Review.
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The Distribution of Dark Matter in Spirals [PDF]
EAS Publications Series, 2006 In the past years a wealth of observations allowed to unravel the structural properties of the Dark Matter Halos around spirals. First, their rotation curves follow an Universal profile (URC) that can be described in terms of an exponential thin stellar disk and a dark halo with a constant density core, whose relative importance increases with galaxy ...
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Distribution of annihilation luminosities in dark matter substructure [PDF]
Physical Review D, 2010 We calculate the probability distribution function (PDF) of the expected annihilation luminosities of dark matter subhalos as a function of subhalo mass and distance from the Galactic center using a semi-analytical model of halo evolution. We find that the PDF of luminosities is relatively broad, exhibiting a spread of as much as an order of magnitude ...
Koushiappas, Savvas M. +2 more
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THE CENTRAL DARK MATTER DISTRIBUTION OF NGC 2976 [PDF]
The Astrophysical Journal, 2012 20 pages, 15 figures, accepted by ...
Adams, Joshua J. +7 more
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Dark matter induced Brownian motion
European Physical Journal C: Particles and Fields, 2020 We discuss a novel approach for directional, light dark matter searches inspired by the high precision position measurements achieved in gravitational wave detectors.
Ting Cheng +2 more
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DISTRIBUTION FUNCTION IN THE CENTER OF THE DARK MATTER HALO [PDF]
International Journal of Modern Physics D, 2009 N-body simulations of dark matter halos show that the density profiles of the halos behave as ρ(r) ∝ r-α(r), where the density logarithmic slope α ≃ 1–1.5 in the center and α ≃ 3–4 in the outer parts of the halos. However, some observations are not in agreement with simulations in the very central region of the halos.
Ma, Ding, He, Ping
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