Results 31 to 40 of about 437,676 (389)
European Physical Journal C: Particles and Fields, 2023 Supermassive black holes from the center of galaxy may be immersed in a dark matter halo. This dark matter halo may form a “cusp” structure around the black hole and disappear at a certain distance from the black hole.
Dong Liu +4 more
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The Astrophysical Journal, 2023 Baryons both increase halo concentration through adiabatic contraction and expel mass through feedback processes. However, it is not well understood how the radiation fields prevalent during the epoch of reionization affect the evolution of concentration
Hanjue Zhu, Nickolay Y. Gnedin
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Mass and shape of the Milky Way’s dark matter halo with globular clusters from Gaia and Hubble [PDF]
Astronomy & Astrophysics, 2018 Aims. We estimate the mass of the inner (< 20 kpc) Milky Way and the axis ratio of its inner dark matter halo using globular clusters as tracers. At the same time, we constrain the distribution in phase-space of the globular cluster system around the ...
L. Posti, A. Helmi
semanticscholar +1 more source
MultiDark simulations: the story of dark matter halo concentrations and density profiles [PDF]
, 2014 Accurately predicting structural properties of dark matter halos is one of the fundamental goals of modern cosmology. We use the new suite of MultiDark cosmological simulations to study the evolution of dark matter halo density profiles, concentrations ...
A. Klypin +4 more
semanticscholar +1 more source
Baryons shaping dark matter haloes [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT In this work, we aim at investigating the effects of baryons on the dark matter (DM) haloes structure, focusing on the correlation between the presence and importance of stellar discs and the halo shapes. We study the properties of a subsample of DM haloes from Fenix and eagle cosmological simulations.
M. C. Artale +4 more
openaire +4 more sources
Black hole surrounded by a dark matter halo in the M87 galactic center and its identification with shadow images [PDF]
Physical Review D, 2019 In this paper we present a new black hole solution surrounded by dark matter halo in the galactic center using the mass model of M87 and that coming from the Universal Rotation Curve (URC) dark matter profile representing family of spiral galaxies.
K. Jusufi +4 more
semanticscholar +1 more source
Caustics in dark matter haloes [PDF]
EAS Publications Series, 2006 Comment: Minor changes, two references added, 6 pages, 3 figures, to appear in Proc. 21st IAP Colloquium "Mass Profiles and Shapes of Cosmological Structures", Paris 4-9 July 2005, [EAS Publications Series, eds: G. Mamon, F. Combes, C. Deffayet, B. Fort]
Roya Mohayaee +5 more
openaire +4 more sources
Disk Galaxies Are Self-similar: The Universality of the H i-to-Halo Mass Ratio for Isolated Disks
The Astrophysical Journal Letters, 2023 Observed scaling relations in galaxies between baryons and dark matter global properties are key to shed light on the process of galaxy formation and on the nature of dark matter.
Marie Korsaga +9 more
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Gravothermal Solutions of SIDM Halos: Mapping from Constant to Velocity-dependent Cross Section
The Astrophysical Journal, 2023 The scale-free gravothermal fluid formalism has long proved effective in describing the evolution of self-interacting dark matter halos with a constant dark matter particle cross section.
Shengqi Yang +6 more
doaj +1 more source
Black hole shadow of Sgr A* in dark matter halo [PDF]
Journal of Cosmology and Astroparticle Physics, 2018 We study, for the first time, the shadow of the supermassive black hole Sgr A* at the center of the Milky Way in dark matter halos. For the Cold Dark Matter and Scalar Field Dark Matter models considered in this work, the apparent shapes of the shadow ...
Xian Hou +3 more
semanticscholar +1 more source