Results 51 to 60 of about 113,786 (346)
Dark Matter Subhalos in the Ursa Minor Dwarf Galaxy
, 2012 Through numerical simulations, we study the dissolution timescale of the Ursa Minor cold stellar clump, due to the combination of phase-mixing and gravitational encounters with compact dark substructures in the halo of Ursa Minor.
A. Just +48 more
core +1 more source
The shapes and alignments of dark matter halos [PDF]
Journal of Cosmology and Astroparticle Physics, 2012 We present measurements of the triaxial dark matter halo shapes and alignment correlation functions in the Millennium and Millennium-2 dark matter N-body simulations. These two simulations allow us to measure the distributions of halo shapes down to 10% of the virial radius over a halo mass range of 6E9 - 2E14 M_sun/h.
Shaun Cole +3 more
openaire +4 more sources
Do globular clusters possess Dark Matter halos? A case study in NGC 2419
, 2012 We use recently published measurements of the kinematics, surface brightness and stellar mass-to-light ratio of the globular cluster NGC 2419 to examine the possibility that this Galactic halo satellite is embedded in a low-mass dark matter halo.
Bellazzini, Michele +5 more
core +1 more source
Disentangling the dark matter halo from the stellar halo [PDF]
Monthly Notices of the Royal Astronomical Society, 2011 The outer haloes of the Milky Way and Andromeda galaxies contain as much important information on their assembly and formation history as the properties of the discs resident in their centres. In this paper we have used the Constrained Local UniversE Simulation project to disentangle the stellar and DM component of three galaxies that resemble the MW ...
Libeskind, Noam I. +4 more
openaire +5 more sources
Time delay of light in the gravitational lensing of supermassive black holes in dark matter halos
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 +1 more source
The Response of the Inner Dark Matter Halo to Stellar Bars
GalaxiesBarred galaxies constitute about two-thirds of observed disc galaxies. Bars affect not only the mass distribution of gas and stars but also that of the dark matter. An elongation of the inner dark matter halo is known as the halo bar.
Daniel A. Marostica +3 more
doaj +1 more source
Estimate of halo ellipticity as a function of radius with flexions [PDF]
, 2000 The cold dark matter theory predicts triaxial dark matter haloes. The radial distribution of halo ellipticity depends on baryonic processes and the nature of dark matter particles (collisionless or collisional).
De Vries, N.K. +7 more
core +5 more sources
Imeglimin attenuates liver fibrosis by inhibiting vesicular ATP release from hepatic stellate cells
FEBS Letters, EarlyView.Imeglimin, at clinically relevant concentrations, inhibits vesicular ATP accumulation and release from hepatic stellate cells, thereby attenuating purinergic signaling and reducing fibrogenic activation. This mechanism reveals a newly identified antifibrotic action of imeglimin beyond glycemic control.
Seiji Nomura +8 more
wiley +1 more source
The Astrophysical JournalWe investigate the mass ( M _200 ) and concentration ( c _200 ) dependencies of the velocity anisotropy ( β ) profiles for different components in the dark matter halo—including halo stars, dark matter, and subhalos—using systems from the IllustrisTNG ...
Jiaxin He +10 more
doaj +1 more source
The impact of baryonic discs on the shapes and profiles of self-interacting dark matter halos
, 2018 We employ isolated N-body simulations to study the response of self-interacting dark matter (SIDM) halos in the presence of the baryonic potentials. Dark matter self-interactions lead to kinematic thermalization in the inner halo, resulting in a tight ...
Creasey, Peter +5 more
core +1 more source