Results 1 to 10 of about 233,940 (217)
Pushing the Limits of Detectability: Mixed Dark Matter from Strong Gravitational Lenses [PDF]
Mon Not R Astron Soc, 2023 One of the frontiers for advancing what is known about dark matter lies in using strong gravitational lenses to characterize the population of the smallest dark matter halos. There is a large volume of information in strong gravitational lens images -- the question we seek to answer is to what extent we can refine this information.
Keeley RE +5 more
arxiv +2 more sources
On the structure and nature of dark matter halos [PDF]
arXiv, 1999 The structure of dark matter halos as predicted from cosmological models is discussed and compared with observed rotation curves of dark matter-dominated dwarf galaxies. The theoretical models predict that dark matter halos represent a one-parameter family with a universal density profile.
Andreas Burkert, Joseph Silk
arxiv +3 more sources
Time delay of light in the gravitational lensing of supermassive black holes in dark matter halos [PDF]
European Physical Journal C: Particles and FieldsThe dark matter halo has non-negligible effects on the gravitational lensing of supermassive black hole in the galaxy center. Our work presents a study on the time-delay of light in gravitational lensing of black holes enclosed by dark matter halos.
Chen-Kai Qiao, Ping Su
doaj +2 more sources
Collisional Dark Matter and the Structure of Dark Halos [PDF]
The Astrophysical Journal, 2000 We study how the internal structure of dark halos is affected if Cold Dark Matter particles are assumed to have a large cross-section for elastic collisions. We identify a cluster halo in a large cosmological N-body simulation and resimulate its formation with progressively increasing resolution.
Naoki Yoshida +3 more
openalex +5 more sources
The GD-1 Stellar Stream Perturber as a Core-collapsed Self-interacting Dark Matter Halo [PDF]
The Astrophysical Journal LettersThe GD-1 stellar stream exhibits spur and gap structures that may result from a close encounter with a dense substructure. When interpreted as a dark matter subhalo, the perturber is denser than predicted in the standard cold dark matter (CDM) model.
Xingyu Zhang +3 more
doaj +2 more sources
Universal scaling laws and density slopes for dark matter haloes [PDF]
Scientific Reports, 2023 Smalls scale challenges suggest some missing pieces in our current understanding of dark matter. A cascade theory for dark matter is proposed to provide extra insights, similar to the cascade phenomenon in hydrodynamic turbulence.
Zhijie Xu
doaj +2 more sources
The mass function of dark matter haloes [PDF]
Monthly Notices of the Royal Astronomical Society, 2001 14 pages, 12 figures, Minor changes.
Adrian Jenkins +7 more
openalex +6 more sources
Cuspy dark matter haloes and the Galaxy [PDF]
Monthly Notices of the Royal Astronomical Society, 2001 5 pages, 1 figures, MNRAS (submitted)
James Binney, N. W. Evans
openalex +6 more sources
A Cuspy Dark Matter Halo [PDF]
The Astrophysical Journal, 2021 Abstract The cusp–core problem is one of the main challenges of the cold dark matter paradigm on small scales; the density of a dark matter halo is predicted to rise rapidly toward the center as ρ(r) ∝ r α with α between −1 and −1.5, while such a cuspy profile has not been ...
Yong Shi +6 more
openaire +3 more sources
Dark Matter Haloes and Subhaloes [PDF]
Galaxies, 2019 The development of methods and algorithms to solve the N-body problem for classical, collisionless, non-relativistic particles has made it possible to follow the growth and evolution of cosmic dark matter structures over most of the universe’s history.
Jesús Zavala, Carlos S. Frenk
openaire +5 more sources