Results 31 to 40 of about 917,117 (194)

Stationar spherical-symmetric configuration of dark matter

Physical Sciences and Technology, 2021
The article is devoted to the consideration of a model problem, where mass flow of dark matter which take as only gravitational interacting spherical continuous medium without pressure and with radial opposite motion with equilibrium ascending and ...
M. Abishev, N. Beissen, B. Karsimanov, I. Uspanov, M. O. Alimkulova   +4 more
doaj   +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

The inner dark matter distribution of the Cosmic Horseshoe (J1148+1930) with gravitational lensing and dynamics

, 2019
We present a detailed analysis of the inner mass structure of the Cosmic Horseshoe (J1148+1930) strong gravitational lens system observed with the Hubble Space Telescope (HST) Wide Field Camera 3 (WFC3). In addition to the spectacular Einstein ring, this
Chirivì, G., Halkola, A., Lewis, G. F., Schuldt, S., Sonnenfeld, A., Suyu, S. H., Yıldırım, A.   +6 more
core   +1 more source

Interpreting Dark Matter Direct Detection Independently of the Local Velocity and Density Distribution

, 2010
We demonstrate precisely what particle physics information can be extracted from a single direct detection observation of dark matter while making absolutely no assumptions about the local velocity distribution and local density of dark matter.
Graham D. Kribs, J. I. Read, Patrick J. Fox, Tim M. P. Tait   +3 more
core   +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-universality of halo profiles and implications for dark matter experiments [PDF]

, 2011
We explore the cosmological halo-to-halo scatter of the distribution of mass within dark matter halos utilizing a well-resolved statistical sample of clusters from the cosmological Millennium simulation.
Bergstrom, Bertone, Blumenthal, Bullock, Catena, Darren S. Reed, Duffy, Duffy, Einasto, Eke, Fukushige, Gao, Gao, Gillessen, Guo, Hayashi, Jing, Johnston, Jungman, Kamionkowski, Kamionkowski, Knollmanns, Kuhlen, Liang Gao, Lukić, Maccio, Maccio, Mandelbaum, Mandelbaum, Moore, Navarro, Navarro, Navarro, Neto, Power, Reed, Reed, Savvas M. Koushiappas, Seljak, Sheldon, Sheldon, Springel, Springel, Springel, Springel, Strong, Ullio, Vogelsberger, Weber, Wechsler, Widrow, Zavala   +51 more
core   +1 more source

The AIDA-TNG project: Abundance, radial distribution, and clustering properties of halos in alternative dark matter models

Astronomy & Astrophysics
Warm and self-interactive dark matter cosmologies have been proposed as nonbaryonic solutions to the tensions between the Λ cold dark matter model and observations at the kiloparsec scale.
Romanello M., Despali G., Marulli F., Giocoli C., Moscardini L., Vogelsberger M.   +5 more
doaj   +1 more source

Dark matter distribution in superthin galaxies

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT This paper presents a new method of calculating dark matter density profiles for superthin axial symmetric galaxies without a bulge. This method is based on a simple physical model, which includes an infinitely thin galactic disc immersed in a spherically symmetric halo of dark matter. To obtain the desired distribution density,
openaire   +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

Physical properties of dark matter in galaxy U11454

Physical Sciences and Technology, 2020
In this paper physical characteristics of dark matter distribution in the spiral galaxy U11454 is explored using only well-known cored density profiles in the literature such as the pseudo-isothermal, Burkert, Einasto, exponential sphere, Beta and ...
K. Boshkayev, T. K. Konysbayev, E. B. Kurmanov, M. Muccino, G. Zhumakhanova   +4 more
doaj   +3 more sources