Results 51 to 60 of about 7,204,887 (298)

Measurement of anisotropy of dark matter velocity distribution using directional detection

open access: yesEPJ Web of Conferences, 2018
Although the velocity distribution of dark matter is assumed to be generally isotropic, some studies have found that ~25% of the distribution can have anisotropic components.
Nagao Keiko I.
doaj   +1 more source

THE DARK MATTER DISTRIBUTION IN A383: EVIDENCE FOR A SHALLOW DENSITY CUSP FROM IMPROVED LENSING, STELLAR KINEMATIC, AND X-RAY DATA [PDF]

open access: yes, 2011
We extend our analyses of the dark matter (DM) distribution in relaxed clusters to the case of A383, a luminous X-ray cluster at z = 0.189 with a dominant central galaxy and numerous strongly lensed features.
A. Newman, T. Treu, R. Ellis, D. Sand
semanticscholar   +1 more source

Dark Matter distribution in the Milky Way: microlensing and dynamical constraints [PDF]

open access: yes, 2011
nd that the most commonly discussed Dark Matter proles ( viz. Navarro-Frenk-White and Einasto) are consistent with microlensing and dynamical observations, while extreme adiabatically compressed proles are robustly ruled out.
F. Iocco   +3 more
semanticscholar   +1 more source

The Distribution of Satellite Galaxies in the IllustrisTNG100 Simulation

open access: yesThe Astrophysical Journal, 2022
We investigate the spatial distribution of the satellites of isolated host galaxies in the IllustrisTNG100 simulation. In agreement with a previous, similar analysis of the Illustris-1 simulation, the satellites are typically poor tracers of the mean ...
Bryanne McDonough, Tereasa G. Brainerd
doaj   +1 more source

Dynamical modelling of the galactic bulge and bar: the Milky Way's pattern speed, stellar and dark matter mass distribution [PDF]

open access: yes, 2016
We construct a large set of dynamical models of the galactic bulge, bar and inner disk using the Made-to-Measure method. Our models are constrained to match the red clump giant density from a combination of the VVV, UKIDSS and 2MASS infrared surveys ...
Matthieu Portail   +3 more
semanticscholar   +1 more source

QCD equation of state and dark matter [PDF]

open access: yes, 2012
The QCD equation of state is not often discussed in cosmology. However, the relic density of weakly interacting massive particles (WIMPs) depends on the entropy and the expansion rate of the Universe when they freeze out, at a temperature in the range ...
Philipsen, Owe   +3 more
core   +1 more source

The First Robust Evidence Showing a Dark Matter Density Spike Around the Supermassive Black Hole in OJ 287

open access: yesThe Astrophysical Journal Letters
Black hole dynamics suggests that dark matter would redistribute near a supermassive black hole (SMBH) to form a density spike. However, no direct evidence of a dark matter density spike around an SMBH has been identified.
Man Ho Chan, Chak Man Lee
doaj   +1 more source

Dark matter distribution in the Coma cluster from galaxy kinematics: breaking the mass-anisotropy degeneracy [PDF]

open access: yes, 2003
We study velocity moments of elliptical galaxies in the Coma cluster using Jeans equations. The dark matter distribution in the cluster is modelled by a generalized formula based upon the results of cosmological N-body simulations. Its inner slope (cuspy
E. Lokas, G. Mamon
semanticscholar   +1 more source

Pediatric Idiopathic Multicentric Castleman Disease Is Often Severe But Responsive to Siltuximab

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Idiopathic multicentric Castleman disease (iMCD) is a potentially fatal immunologic disorder marked by widespread lymphadenopathy and inflammation. Siltuximab, an interleukin‐6 (IL‐6) inhibitor, is the only FDA‐approved treatment for adult patients with iMCD.
Bridget Austin   +17 more
wiley   +1 more source

Intracluster Light as a Probe for Dark Matter: Exploring Self-interacting Dark Matter and Cold Dark Matter with C-EAGLE Sims

open access: yesThe Astrophysical Journal
In this pilot study, we investigate whether intracluster light (ICL) can serve as an observational discriminator of dark matter physics. The self-interacting dark matter (SIDM) model has gained increasing attention as a possible resolution to small-scale
Jaewon Yoo   +7 more
doaj   +1 more source

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