Results 11 to 20 of about 917,675 (340)

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   +2 more sources

Caustics, Cold Flows, and Annual Modulation [PDF]

open access: yesAdvances in Astronomy, 2011
We discuss the formation of dark matter caustics, and their possible detection by future dark matter experiments. The annual modulation expected in the recoil rate measured by a dark matter detector is discussed.
Aravind Natarajan
doaj   +4 more sources

Mapping the Distribution of Luminous and Dark Matter in Strong Lensing Galaxies [PDF]

open access: bronze, 2007
We present the distribution of luminous and dark matter in a set of strong lensing (early-type) galaxies. By combining two independent techniques - stellar population synthesis and gravitational lensing - we can compare the baryonic and dark matter ...
Ignacio Ferreras   +3 more
openalex   +4 more sources

Sources and distributions of dark matter [PDF]

open access: yesNuclear 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 )   +1 more
openaire   +3 more sources

The dark matter distribution in disc galaxies [PDF]

open access: yesMonthly 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

How does dark matter affect compact star properties and high density constraints of strongly interacting matter [PDF]

open access: yesEPJ Web of Conferences, 2022
We study the impact of asymmetric bosonic dark matter on neutron star properties, including possible changes of tidal deformability, maximum mass, radius, and matter distribution inside the star.
Sagun Violetta   +4 more
doaj   +1 more source

Dark Matter direct detection of classical WIMPs

open access: yesSciPost Physics Lecture Notes, 2022
One of the highest priorities in particle physics today is the identification of the constituents of dark matter. This manuscript is a supplement to pedagogical lectures given at the 2021 Les Houches Summer School on Dark Matter.
Jodi Cooley
doaj   +1 more source

DISTRIBUTION FUNCTION OF DARK MATTER WITH CONSTANT ANISOTROPY [PDF]

open access: yesInternational 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

Magellan/M2FS and MMT/Hectochelle Spectroscopy of Dwarf Galaxies and Faint Star Clusters within the Galactic Halo

open access: yesThe Astrophysical Journal Supplement Series, 2023
We present spectroscopic data for 16,369 stellar targets within and/or toward 38 dwarf spheroidal galaxies and faint star clusters within the Milky Way halo environment.
Matthew G. Walker   +7 more
doaj   +1 more source

Indirect Evidence for Dark Matter Density Spikes around Stellar-mass Black Holes

open access: yesThe Astrophysical Journal Letters, 2023
It has been suggested for a long time that dark matter would form a density spike around a black hole. However, no promising evidence has been observed so far to verify this theoretical suggestion.
Man Ho Chan, Chak Man Lee
doaj   +1 more source

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