Results 41 to 50 of about 556,485 (362)

Common origin of warm dark matter and dark radiation [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2020
We consider a cosmological scenario where a relativistic particle and a stable massive particle are simultaneously produced from the decay of a late-decaying particle after Big-Bang Nucleosynthesis but before matter-radiation equality. The relativistic and massive particles behave as dark radiation and warm dark matter, respectively.
Buen-Abad, Manuel A.   +2 more
openaire   +2 more sources

Cosmological constraints on variable warm dark matter [PDF]

open access: greenPhysics Letters B, 2013
11 pages, 6 figures, 1 table, revtex4; v2: discussions added, Phys. Lett.
Hao Wei, Zu-Cheng Chen, Jing Liu
openalex   +4 more sources

New constraints on warm dark matter from the Lyman- α forest power spectrum [PDF]

open access: yesPhysical Review D, 2022
The forest of Lyman-$\alpha$ absorption lines detected in the spectra of distant quasars encodes information on the nature and properties of dark matter and the thermodynamics of diffuse baryonic material.
B. Villasenor   +3 more
semanticscholar   +1 more source

Interacting warm dark matter [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2013
22 pages, 7 figures, 2 tables.
Cruz, Norman   +3 more
openaire   +4 more sources

A model for mixed warm and hot right-handed neutrino dark matter

open access: yesJournal of High Energy Physics, 2021
We discuss a model where a mixed warm and hot keV neutrino dark matter rises naturally. We arrange active and sterile neutrinos in the same SU(3) L multiplet, with the lightest sterile neutrino being dark matter.
Maíra Dutra   +3 more
doaj   +1 more source

The energy cascade from warm dark matter decays [PDF]

open access: greenMonthly Notices of the Royal Astronomical Society: Letters, 2008
Abstract We use a set of Monte Carlo simulations to follow the cascade produced by a primary electron of energy Ein in the intergalactic medium. We choose Ein= 3–10 keV as expected from the decay of one of the most popular warm dark matter (WDM) candidates, sterile neutrinos.
M. Valdés, Andrea Ferrara
openalex   +5 more sources

Warm-plus-hot neutrino dark matter [PDF]

open access: yesPhysical Review D, 1995
We investigate a new hybrid-model universe containing two types of dark matter, one ``warm'' and the other ``hot.'' The hot component is an ordinary light neutrino with mass \ensuremath{\sim}25${\mathit{h}}^{2}$ eV while the warm component is a sterile neutrino with mass \ensuremath{\sim}700${\mathit{h}}^{2}$ eV.
, Malaney, , Starkman, , Widrow
openaire   +2 more sources

Dark matter in astrophysics/cosmology

open access: yesSciPost Physics Lecture Notes, 2022
These lecture notes aim to provide an introduction to dark matter from the perspective of astrophysics/cosmology. We start with a rapid overview of cosmology, including the evolution of the Universe, its thermal history and structure formation.
Anne M. Green
doaj   +1 more source

Warm Little Inflaton Becomes Cold Dark Matter [PDF]

open access: yesPhysical Review Letters, 2019
6 pages, 2 figures; Matches version published in Physical Review ...
Rosa, João G., Ventura, Luís B.
openaire   +4 more sources

Estimating the warm dark matter mass from strong lensing images with truncated marginal neural ratio estimation [PDF]

open access: yes, 2022
Precision analysis of galaxy-galaxy strong gravitational lensing images provides a unique way of characterizing small-scale dark matter halos, and could allow us to uncover the fundamental properties of dark matter's constituents. Recently, gravitational
Noemi Anau Montel   +4 more
semanticscholar   +1 more source

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