Results 61 to 70 of about 556,485 (362)
Self-interacting warm dark matter
Physical Review D, 2000 It has been shown by many independent studies that the cold dark matter scenario produces singular galactic dark halos, in strong contrast with observations. Possible remedies are that either the dark matter is warm so that it has significant thermal motion or that the dark matter has strong self interactions.
Hannestad, Steen, Scherrer, Robert J.
openaire +2 more sources
Warm Dark Matter from keVins [PDF]
Journal of Cosmology and Astroparticle Physics, 2012 32 pages, 9 figures, 2 ...
Stephen F King, Alexander Merle
openaire +3 more sources
Superconducting Detectors for Super Light Dark Matter [PDF]
, 2015 We propose and study a new class of superconducting detectors which are sensitive to O(meV) electron recoils from dark matter-electron scattering. Such devices could detect dark matter as light as the warm dark matter limit, mX > keV. We compute the rate
Hochberg, Yonit +2 more
core +3 more sources
Constraints on warm dark matter from UV luminosity functions of high-z galaxies with Bayesian model comparison [PDF]
Monthly notices of the Royal Astronomical Society, 2021 The number density of small dark matter (DM) haloes hosting faint high-redshift galaxies is sensitive to the DM free-streaming properties. However, constraining these DM properties is complicated by degeneracies with the uncertain baryonic physics ...
A. Rudakovskyi +3 more
semanticscholar +1 more source
A new recipe for $$\Lambda $$ Λ CDM
European Physical Journal C: Particles and Fields, 2017 It is well known that a canonical scalar field is able to describe either dark matter or dark energy but not both. We demonstrate that a non-canonical scalar field can describe both dark matter and dark energy within a unified setting.
Varun Sahni, Anjan A. Sen
doaj +1 more source
Are James Webb Space Telescope Observations Consistent with Warm Dark Matter? [PDF]
International Journal of Astronomy and Astrophysics International Journal of Astronomy and AstrophysicsWe compare observed with predicted distributions of galaxy stellar masses $M_*$ and galaxy rest-frame ultra-violet luminosities per unit bandwidth $L_{UV}$, in the redshift range $z = 2$ to 13.
B. Hoeneisen
semanticscholar +1 more source
Matter power spectrum of light freeze-in dark matter: With or without self-interaction
Physics Letters B, 2020 We study the free-streaming effect in a light freeze-in dark matter model. Naturally in the dark sector one can find dark matter related coupling, and such coupling may induce dark matter self-scattering.
Ran Huo
doaj +1 more source
Unifying dark matter and dark energy with non-canonical scalars
European Physical Journal C: Particles and Fields, 2021 Non-canonical scalar fields with the Lagrangian $${{\mathcal {L}}} = X^\alpha - V(\phi )$$ L = X α - V ( ϕ ) , possess the attractive property that the speed of sound, $$c_s^{2} = (2\,\alpha - 1)^{-1}$$ c s 2 = ( 2 α - 1 ) - 1 , can be exceedingly small ...
Swagat S. Mishra, Varun Sahni
doaj +1 more source
Lyman-alpha constraints on warm and on warm-plus-cold dark matter models [PDF]
, 2008 We revisit Lyman-alpha bounds on the dark matter mass in Lambda Warm Dark Matter (Lambda-WDM) models, and derive new bounds in the case of mixed Cold plus Warm models (Lambda-CWDM), using a set up which is a good approximation for several theoretically ...
Boyarsky, Alexey +3 more
core +3 more sources
KeV warm dark matter and composite neutrinos [PDF]
Journal of High Energy Physics, 2012 12 pages, 2 figures, published ...
Robinson, Dean J, Tsai, Yuhsin
openaire +2 more sources