Results 11 to 20 of about 917,117 (194)

Mixed Dark Matter from Axino Distribution [PDF]

Physical Review D, 1993
We study the possibility of mixed dark matter obtained through the phase space distribution of a single particle. An example is offered in the context of SUSY models with a Peccei-Quinn symmetry.
A. Klypin, A. Masiero, A. N. Taylor, D. A. Dicus, F. Gabbiani, J. A. Holtzman, J. A. Holtzman, J. E. Kim, J. Ellis, J. F. Nieves, K. Enqvist, K. Rajagopal, M. Dine, M. Fukugita, Q. Shafi, R. Peccei, R. Peccei, R. Valdarnini, S. A. Bonometto, S. A. Bonometto, S. A. Bonometto, S. A. Bonometto, S. A. Bonometto, S. Achilli   +23 more
core   +5 more sources

Dark Matter Distribution in Milky Way analog Galaxies

The Astrophysical Journal
Our current understanding of how dark matter (DM) is distributed within the Milky Way (MW) halo, particularly in the solar neighborhood, is based on either careful studies of the local stellar orbits, model assumptions on the global shape of the MW halo,
Natanael G. de Isídio, K. Menéndez-Delmestre, T. S. Gonçalves, M. Grossi, D. C. Rodrigues, N. Garavito-Camargo, A. Araujo-Carvalho, P. P. B. Beaklini, Y. Cavalcante-Coelho, A. Cortesi, L. H. Quiroga-Nuñez, T. Randriamampandry   +11 more
doaj   +3 more sources

Dependence of dark matter - electron scattering on the galactic dark matter velocity distribution [PDF]

Journal of Cosmology and Astroparticle Physics, 2021
21+6 pages, 2 appendices, 13 figures, 4 ...
Radick, Aria, Taki, Anna-Maria, Yu, Tien-Tien   +2 more
openaire   +2 more sources

Testing dark matter distributions by neutrino–dark matter interactions [PDF]

The European Physical Journal C, 2020
AbstractAt present, a variety of dark matter (DM) density profiles are available in the literature, able to fit the observed rotation velocity curves in galaxies. These distributions may be classified according to nature and mass of the DM candidate, and their estimation of the concentration of DM on halo scales, as well as through their central ...
A. V. Penacchioni, O. Civitarese, C. R. Argüelles   +2 more
openaire   +4 more sources

Distribution function of dark matter [PDF]

Physical Review D, 2006
There is good evidence from N-body simulations that the velocity distribution in the outer parts of halos is radially anisotropic, with the kinetic energy in the radial direction roughly equal to the sum of that in the two tangential directions. We provide a simple algorithm to generate such cosmologically important distribution functions.
N. Wyn Evans, Jin H. An
openaire   +3 more sources

The local dark matter distribution in self-interacting dark matter halos

Journal of Cosmology and Astroparticle Physics, 2023
Abstract We study the effects of dark matter self-interactions on the local dark matter distribution in selected Milky Way-like galaxies in the EAGLE hydrodynamical simulations. The simulations were run with two different self-interacting dark matter models, a constant and velocity-dependent self-interaction cross-section. We find that
Rahimi, Elham, Vienneau, Evan, Bozorgnia, Nassim, Robertson, Andrew   +3 more
openaire   +2 more sources

Sources and distributions of dark matter [PDF]

Nuclear Physics B - Proceedings Supplements, 1995
In the first section, I will try to convey a sense of the variety of observational inputs that tell us about the existence and the spatial distribution of dark matter in the universe. In the second section, I will briefly review the four main dark matter candidates, taking note of each candidate's status in the world of particle physics, its production
I. Newton Institute, University of Cambridge, Cambridge, CB3 OEH, UK ( host institution ), Sikivie, P. ( author )   +1 more
openaire   +3 more sources

The dark matter distribution in disc galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2001
We use high-quality optical rotation curves of 9 low-luminosity disk galaxies to obtain the velocity profile of the surrounding dark matter halos. We find that they increase linearly with radius at least out to the stellar disk edge, implying that, over the entire region where the stars reside, the density of the dark halo is constant.
Borriello A, Salucci, Paolo
openaire   +3 more sources

DISTRIBUTION FUNCTION OF DARK MATTER WITH CONSTANT ANISOTROPY [PDF]

International Journal of Modern Physics D, 2008
N-body simulations of dark matter halos show that the density is cusped near the center of the halo. The density profile behaves as r–γ in the inner parts, where γ ≃ 1 for the NFW model and γ ≃ 1.5 for the Moore model, but in the outer parts the two models agree with each other in the asymptotic behavior of the density profile.
Ma, Ding, He, Ping
openaire   +3 more sources

Dark Matter Distribution in Nearby Galaxies [PDF]

Symposium - International Astronomical Union, 2004
We present results obtained from a study of the mass distribution of 24 galaxies observed using Fabry-Pérot techniques, as part of the GHASP survey (see Russeil et al., this meeting). For each galaxy, we combined high resolution Hα rotation curves derived from 2-D velocity fields, with low resolution HI data, in order to determine accurately the inner ...
Olivia Garrido, Philippe Amram, Claude Carignan, Sébastien Blais-Ouellette, Michel Marcelin, Delphine Russeil   +5 more
openaire   +1 more source