Results 31 to 40 of about 417,071 (324)
Warm Dark Matter from keVins [PDF]
Journal of Cosmology and Astroparticle Physics, 2012 32 pages, 9 figures, 2 ...
Alexander Merle +2 more
openaire +5 more sources
Warm Dark Matter Galaxies with Central Supermassive Black Holes
Universe, 2022 We generalize the Thomas–Fermi approach to galaxy structure to include central supermassive black holes and find, self-consistently and non-linearly, the gravitational potential of the galaxy plus the central black hole (BH) system.
Hector J. de Vega, Norma G. Sanchez
doaj +1 more source
REIONIZATION IN THE WARM DARK MATTER MODEL [PDF]
The Astrophysical Journal, 2012 Compared with the cold dark matter (CDM) model, in the warm dark matter (WDM) model formation of small scale structure is suppressed. It is often thought that this would delay the reionization of the intergalactic medium (IGM), as the star formation rate during the epoch of reionization (EOR) would be lowered. However, during the later stage of the EOR,
Bin Yue, Xuelei Chen, Xuelei Chen
openaire +3 more sources
Constraining Warm Dark Matter using QSO gravitational lensing [PDF]
, 2007 Warm Dark Matter (WDM) has been invoked to resolve apparent conflicts of Cold Dark Matter (CDM) models with observations on subgalactic scales. In this work we provide a new and independent lower limit for the WDM particle mass (e.g.
Abazajian +57 more
core +2 more sources
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
Interacting dark matter disguised as warm dark matter
Physical Review D, 2002 14 pages, 5 figures, to appear in ...
S. H. Hansen +4 more
openaire +3 more sources
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
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
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