Results 31 to 40 of about 1,359 (236)
ELUCID. V. Lighting Dark Matter Halos with Galaxies [PDF]
The Astrophysical Journal, 2018 Abstract In a recent study, using the distribution of galaxies in the north galactic pole of the SDSS DR7 region enclosed in a 500 box, we carried out our ELUCID simulation (ELUCID III). Here, we light the dark matter halos and subhalos in the reconstructed region in the simulation with ...
Xiaohu Yang +18 more
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Galaxy-Induced Transformation of Dark Matter Halos [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 11 pages and 9 ...
Abadi, Mario G. +4 more
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Relating the Structure of Dark Matter Halos to Their Assembly and Environment
The Astrophysical Journal, 2020 We use a large N -body simulation to study the relation of the structural properties of dark matter halos to their assembly history and environment. The complexity of individual halo assembly histories can be well described by a small number of principal
Yangyao Chen +6 more
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Galaxy mass models: MOND versus dark matter haloes [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 Mass models of 15 nearby dwarf and spiral galaxies are presented. The galaxies are selected to be homogeneous in terms of the method used to determine their distances, the sampling of their rotation curves (RCs) and the mass-to-light ratio (M/L) of their stellar contributions, which will minimize the uncertainties on the mass model results.
Randriamampandry, Toky, Carignan, Claude
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Galaxy occupation statistics of dark matter haloes: observational results [PDF]
Monthly Notices of the Royal Astronomical Society, 2005 Abstract We study the occupation statistics of galaxies in dark matter haloes using galaxy groups identified from the Two-degree Field Galaxy Redshift Survey with the halo-based group finder of Yang et al.. The occupation distribution is considered separately for early- and late-type galaxies, as well as in terms of central and satellite
Yang, XH +3 more
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Galaxies, 2018 The cold dark matter (CDM) paradigm successfully explains the cosmic structure over an enormous span of redshifts. However, it fails when probing the innermost regions of dark matter halos and the properties of the Milky Way’s dwarf galaxy satellites ...
Ivan de Martino +5 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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GRAVISCALAR DARK MATTER AND SMOOTH GALAXY HALOS [PDF]
Modern Physics Letters A, 2009 In the framework of the unimodular metagravity, with the scalar graviton/graviscalar dark matter, a regular anomalous one-parameter solution to the static spherically symmetric metagravity equations in empty space is found. The solution presents a smooth graviscalar halo, with a finite central density profile, qualitatively reproducing the ...
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Ellipticity of dark matter haloes with galaxy-galaxy weak lensing [PDF]
Monthly Notices of the Royal Astronomical Society, 2006 20 pages, 8 figures, matches MNRAS accepted version (includes updated discussion of systematics, no changes to conclusions)
Mandelbaum, Rachel +4 more
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Physics Letters B, 2020 We discuss formation of dark matter (DM) mini-halos around primordial black holes (PBHs) and its implication on DM direct detection experiments, including axion searches.
Mark P. Hertzberg +2 more
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