Results 41 to 50 of about 234,039 (316)
DARK ENERGY AND KEY PHYSICAL PARAMETERS OF CLUSTERS OF GALAXIES
Odessa Astronomical Publications, 2012 We discuss the physics of clusters of galaxies embedded in the cosmic dark energy background and show that 1) the halo cut-off radius of a cluster like the Virgo cluster is practically, if not exactly, equal to the zero-gravity radius at which the dark ...
A. D. Chernin, G. S. Bisnovatyi-Kogan
doaj +1 more source
Dynamical Models of Spherical Galaxies with Massive Halo [PDF]
Journal of Astronomy and Space Sciences, 2003 Using the Schwarzschild's linear programming technique, we obtained the general solutions of the collisionless Bolzmann equation describing the spherical galaxy in dynamical equilibrium.
Mun-Suk Chun +2 more
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Evolution of dark-matter haloes in a variety of dark-energy cosmologies [PDF]
New Astron.Rev. 49 (2005) 199-203, 2004 High-resolution, numerical simulations of 17 cluster-sized dark-matter haloes in eight different cosmologies with and without dynamical dark energy confirm the picture that core halo densities are imprinted early during their formation by the mean cosmological density.
arxiv +1 more source
Imprints of flavor anomalies on neutrino oscillations through dark matter halo
Nuclear Physics B, 2023 In this work we study the impact of new physics, stimulated by flavor anomalies, on neutrino oscillations through dense dark matter halo. Inspired by a model where a Majorana dark matter fermion and two new scalar fields contribute to b→sμ+μ− transition ...
Ashutosh Kumar Alok +2 more
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The segregation of baryons and dark matter during halo assembly [PDF]
MNRAS 470, 2262 (2017), 2016 The standard galaxy formation theory assumes that baryons and dark matter are initially well-mixed before becoming segregated due to radiative cooling. We use non-radiative hydrodynamical simulations to explicitly examine this assumption and find that baryons and dark matter can also be segregated because of different physics obeyed by gas and dark ...
arxiv +1 more source
The Astrophysical Journal, 2004 We study properties of dark matter halos at high redshifts z=2-10 for a vast range of masses with the emphasis on dwarf halos with masses 10^7-10^9 Msun/h. We find that the density profiles of relaxed dwarf halos are well fitted by the NFW profile and do not have cores. We compute the halo mass function and the halo spin parameter distribution and find
Stefan Gottlöber +3 more
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Recoiling black holes in static and evolving dark matter halo potential [PDF]
Serbian Astronomical Journal, 2015 We follow trajectories of kicked black holes in static and evolving dark matter halo potential. We explore both NFW and Einasto dark matter density distributions.
Smole M.
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Statistics of substructures in dark matter haloes [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 13 pages, 11 figures and 1 table.
G. De Lucia +4 more
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Halo cold dark matter and microlensing [PDF]
Physical Review Letters, 1994 There is good evidence that most of the baryons in the Universe are dark and some evidence that most of the matter in the Universe is nonbaryonic with cold dark matter (cdm) being a promising possibility. We discuss expectations for the abundance of baryons and cdm in the halo of our galaxy and locally.
Michael S. Turner, Evalyn Gates
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The detection of sub-solar mass dark matter halos [PDF]
New J.Phys.11:105012,2009, 2009 Dark matter halos of sub-solar mass are the first bound objects to form in cold dark matter theories. In this article, I discuss the present understanding of "microhalos'', their role in structure formation, and the implications of their potential presence, in the interpretation of dark matter experiments.
arxiv +1 more source