Results 61 to 70 of about 1,187,641 (234)

The Dark Matter Distribution in Galaxy Cluster Cores [PDF]

, 2002
Determining the structure of galaxy clusters is essential for an understanding of large scale structure in the universe, and may hold important clues to the identity and nature of dark matter particles.
Arabadjis, G., Arabadjis, J. S., Bautz, M. W.   +2 more
core   +2 more sources

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

, 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

The interaction of dark matter cusp with the baryon component in disk galaxies

, 2012
In this paper we examine the effect of the formation and evolution of the disk galaxy on the distribution of dark halo matter. We have made simulations of isolated dark matter (DM) halo and two component (DM + baryons).
A. A. Dutton, A. Helmi, A. Khoperskov, A. P. Cooper, A. Rosen, A. V. Khoperskov, A. V. Khoperskov, A. V. Khoperskov, A. V. Maccio, A. V. Zasov, A.G.Doroshkevich,V. N. Lukash, B. Allgood, B. C. Whitmore, B. Leer van, B. M. Shustov, B. M. Shustov, B.M. Shustov, D. Z. Wiebe, E. Griv, E. Mikheeva, F. Governato, H. Mo, I.V. Igumenshchev, J. A. Sellwood, J. Barnes, J. Dubinski, J. F. Navarro, J. F. Navarro, K. Wada, M. A. Eremin, M. D. Weinberg, M. G. Abadi, M. Gustafsson, M. Kuhlen, M. Mori, M. Spano, M. Steinmetz, M. V. Medvedev, N. Katz, P. Das, R. Roskar, S. A. Khoperskov, V. Belokurov, W. J. G. Blok de, W. R. Brown   +44 more
core   +1 more source

The Mass Discrepancy-Acceleration Relation: Disk Mass and the Dark Matter Distribution [PDF]

, 2004
The mass discrepancy in disk galaxies is shown to be well correlated with acceleration, increasing systematically with decreasing acceleration below a critical scale a0 ≈ 3700 km2 s-2 kpc-1 = 1.2 × 10-10 m s-2. For each galaxy, there is an optimal choice
S. McGaugh
semanticscholar   +1 more source

Radial dependence of the dark matter distribution in M33 [PDF]

Monthly Notices of the Royal Astronomical Society, 2017
The stellar and gaseous mass distributions, as well as the extended rotation curve in the nearby galaxy M33 are used to derive the radial distribution of dark matter density in the halo and to test cosmological models of galaxy formation and evolution. Two methods are examined to constrain dark mass density profiles.
Lopez Fune E., Salucci P., Corbelli E.
openaire   +3 more sources

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

The 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

Modelling the flux distribution function of the extragalactic gamma-ray background from dark matter annihilation

, 2015
The one-point function (i.e., the isotropic flux distribution) is a complementary method to (anisotropic) two-point correlations in searches for a gamma-ray dark matter annihilation signature.
Ando, Shin'ichiro, Feyereisen, Michael R., Lee, Samuel K.   +2 more
core   +1 more source

Non-Cold Dark Matter from Primordial Black Hole Evaporation

, 2020
Dark matter coupled solely gravitationally can be produced through the decay of primordial black holes in the early universe. If the dark matter is lighter than the initial black hole temperature, it could be warm enough to be subject to structure ...
Baldes, Iason, Decant, Quentin, Hooper, Deanna C., Lopez-Honorez, Laura   +3 more
core   +1 more source

Hierarchical Structure in Dark Matter Distributions [PDF]

Symposium - International Astronomical Union, 1998
Galaxy observers argue for the dark halo surrounding each galaxy, while cluster investigators discuss the dominance of dark matter (DM) in the intra-cluster space. Then, what is the relation between the cluster DM and the DM associated with member galaxies of the cluster?
openaire   +1 more source

Distribution of annihilation luminosities in dark matter substructure [PDF]

Physical Review D, 2010
We calculate the probability distribution function (PDF) of the expected annihilation luminosities of dark matter subhalos as a function of subhalo mass and distance from the Galactic center using a semi-analytical model of halo evolution. We find that the PDF of luminosities is relatively broad, exhibiting a spread of as much as an order of magnitude ...
Koushiappas, Savvas M., Zentner, Andrew R., Kravtsov, Andrey V.   +2 more
openaire   +2 more sources