Results 51 to 60 of about 213,451 (373)
The relationship between galaxy and dark matter halo size from z ∼ 3 to the present [PDF]
, 2017 We explore empirical constraints on the statistical relationship between the radial size of galaxies and the radius of their host dark matter haloes from z similar to 0.1-3 using the Galaxy And Mass Assembly (GAMA) and Cosmic Assembly Near Infrared Deep ...
R. Somerville +12 more
semanticscholar +1 more source
SHAPES OF DARK MATTER HALOS [PDF]
The Shapes of Galaxies and Their Dark Halos, 2002 5 pages, 2 figures, to appear in proceedings of the May 2001 Yale workshop "The Shapes of Galaxies and their Halos"
openaire +3 more sources
Velocity peaks and caustic rings [PDF]
, 1998 The late infall of cold dark matter onto an isolated galaxy produces flows with definite local velocity vectors throughout the galactic halo. It also produces caustic rings, which are places in the halo where the dark matter density is very large.
Bertschinger +12 more
core +3 more sources
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
doaj +1 more source
Splashback Radius in a Spherical Collapse Model
Universe, 2022 It was shown several years ago that dark matter halo outskirts are characterized by very steep density profiles in a very small radial range. This feature has been interpreted as a pile-up of different particle orbits at a similar location, namely ...
Antonino Del Popolo, Morgan Le Delliou
doaj +1 more source
Hierarchy in the Phase Space and Dark Matter Astronomy [PDF]
, 2009 We develop a theoretical framework for describing the hierarchical structure of the phase space of cold dark matter haloes, due to gravitationally bound substructures.
B. Jain +4 more
core +1 more source
Crater 2: An Extremely Cold Dark Matter Halo [PDF]
, 2016 We present results from MMT/Hectochelle spectroscopy of 390 red giant candidate stars along the line of sight to the recently discovered Galactic satellite Crater 2. Modeling the joint distribution of stellar positions, velocities, and metallicities as a
N. Caldwell +8 more
semanticscholar +1 more source
Annual Review of Astronomy and Astrophysics, 2021 We review the physics and phenomenology of wave dark matter: a bosonic dark matter candidate lighter than about 30 eV. Such particles have a de Broglie wavelength exceeding the average interparticle separation in a galaxy like the Milky Way and are, thus,
L. Hui
semanticscholar +1 more source
Warm dark matter chills out: constraints on the halo mass function and the free-streaming length of dark matter with eight quadruple-image strong gravitational lenses [PDF]
Monthly notices of the Royal Astronomical Society, 2019 The free-streaming length of dark matter depends on fundamental dark matter physics, and determines the abundance and concentration of dark matter haloes on sub-galactic scales.
D. Gilman +5 more
semanticscholar +1 more source