Results 21 to 30 of about 781,531 (359)
Cold dark matter resuscitated? [PDF]
Monthly Notices of the Royal Astronomical Society, 1995 The Cold Dark Matter (CDM) model has an elegant simplicitly which makes it very predictive, but when its parameters are fixed at their `canonical' values its predictions are in conflict with observational data. There is, however, much leeway in the initial conditions within the CDM framework.
White, Martin +3 more
openaire +2 more sources
The case for a cold dark matter cusp in Draco [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We use a new mass modelling method, GRAVSPHERE, to measure the central dark matter density profile of the Draco dwarf spheroidal galaxy. Draco's star formation shut down long ago, making it a prime candidate for hosting a `pristine' dark matter cusp ...
J. Read, M. Walker, P. Steger
semanticscholar +1 more source
Dark Matters on the Scale of Galaxies
Universe, 2020 The cold dark-matter model successfully explains both the emergence and evolution of cosmic structures on large scales and, when we include a cosmological constant, the properties of the homogeneous and isotropic Universe.
Ivan de Martino +5 more
doaj +1 more source
Cold dark matter haloes in the Planck era: evolution of structural parameters for Einasto and NFW profiles [PDF]
, 2014 We present the evolution of the structure of relaxed cold dark matter haloes in the cosmology from the Planck satellite. Our simulations cover 5 decades in halo mass, from dwarf galaxies to galaxy clusters.
A. Dutton, A. Macciò
semanticscholar +1 more source
Can tides disrupt cold dark matter subhaloes? [PDF]
Monthly notices of the Royal Astronomical Society, 2019 The clumpiness of dark matter on sub-kpc scales is highly sensitive to the tidal evolution and survival of subhaloes. In agreement with previous studies, we show that N-body realisations of cold dark matter subhaloes with centrally-divergent density ...
R. Errani, J. Peñarrubia
semanticscholar +1 more source
Radial Oscillations of Quark Stars Admixed with Dark Matter
Universe, 2022 We investigated compact stars consisting of cold quark matter and fermionic dark matter treated as two admixed fluids. We computed the stellar structures and fundamental radial oscillation frequencies of different masses of the dark fermion in the cases ...
José C. Jiménez, Eduardo S. Fraga
doaj +1 more source
Radio telescope search for the resonant conversion of cold dark matter axions from the magnetized astrophysical sources [PDF]
Physical Review D, 2018 We study the conditions for the adiabatic resonant conversion of the cold dark matter (CDM) axions into photons in the astrophysically sourced strong magnetic fields such as those in the neutron star magnetosphere. We demonstrate the possibility that the
F. Huang +3 more
semanticscholar +1 more source
Heating of Milky Way disc stars by dark matter fluctuations in cold dark matter and fuzzy dark matter paradigms [PDF]
Monthly notices of the Royal Astronomical Society, 2018 Although highly successful on cosmological scales, cold dark matter (CDM) models predict unobserved overdense ‘cusps’ in dwarf galaxies and overestimate their formation rate.
Benjamin V. Church, P. Mocz, J. Ostriker
semanticscholar +1 more source
Missing Satellites Problem: Completeness Corrections to the Number of Satellite Galaxies in the Milky Way are Consistent with Cold Dark Matter Predictions. [PDF]
Physical Review Letters, 2017 A critical challenge to the cold dark matter (CDM) paradigm is that there are fewer satellites observed around the Milky Way than found in simulations of dark matter substructure.
Stacy Y. Kim, A. Peter, J. Hargis
semanticscholar +1 more source
Substructures in cold dark matter haloes [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 We analyse the properties of substructures within dark matter halos (subhalos) using a set of high-resolution numerical simulations of the formation of structure in a Lambda-CDM Universe. Our simulation set includes 11 high-resolution simulations of massive clusters as well as a region of mean density, allowing us to study the spatial and mass ...
De Lucia G. +7 more
openaire +6 more sources