Results 11 to 20 of about 701,414 (343)
Hot leptogenesis from thermal Dark Matter [PDF]
Journal of Cosmology and Astroparticle Physics, 2017 In this work, we investigate a scenario in which heavy Majorana Right-Handed Neutrinos (RHNs) are in thermal equilibrium with a dark sector with temperature higher than the Standard Model (SM) thermal bath. Specifically, we consider the scenario in which
Nicolás Bernal, Chee Sheng Fong
semanticscholar +6 more sources
Axion hot dark matter bounds [PDF]
, 2008 We derive cosmological limits on two-component hot dark matter consisting of neutrinos and axions. We restrict the large-scale structure data to the safely linear regime, excluding the Lyman-alpha forest.
Georg G. Raffelt +3 more
core +5 more sources
Interference with gravitational instability: Hot and fuzzy dark matter [PDF]
Physical Review DWave or fuzzy dark matter produced with high momenta behaves in many ways like hot particle dark matter while also possessing seemingly different phenomenology due to wave interference. We develop wave perturbation theory to show that white noise density
Rayne Liu, Wayne Hu, Huangyu Xiao
semanticscholar +4 more sources
Interacting Hot Dark Matter [PDF]
Physical Review D, 1997 We discuss the viability of a light particle ($\sim 30$ eV neutrino) with strong self-interactions as a dark matter candidate. The interaction prevents the neutrinos from free-streaming during the radiation dominated regime so galaxy sized density ...
Atrio-Barandela, Fernando +1 more
core +5 more sources
Captures of hot and warm sterile antineutrino dark matter on EC-decaying63Honuclei [PDF]
, 2011 Capturing low-energy electron antineutrinos on radioactive Ho-163 nuclei, which decay into Dy-163 via electron capture (EC), is a noteworthy opportunity to detect relic sterile antineutrinos.
Y.F Li, Zhi-zhong Xing
openalex +3 more sources
Gravity as a portal to reheating, leptogenesis and dark matter [PDF]
Journal of High Energy Physics, 2022 We show that a minimal scenario, utilizing only the graviton as an intermediate messenger between the inflaton, the dark sector and the Standard Model (SM), is able to generate simultaneously the observed relic density of dark matter (DM), the baryon ...
Basabendu Barman +4 more
doaj +2 more sources
Hidden Hot Dark Matter as Cold Dark Matter [PDF]
, 2009 We show that hidden hot dark matter, hidden-sector dark matter with interactions that decouple when it is relativistic, is a viable dark matter candidate provided it has never been in thermal equilibrium with the particles of the standard model.
Sigurdson, Kris
core +4 more sources
THE HOT DARK MATTER MODEL: FURTHER INVESTIGATION
Odessa Astronomical Publications, 2020 e outer region with the dominant hot dark matter (the parabolic orbit of the test particle). It was assumed that the hot dark matter consists of hypothetical Planck neutrinos arising in the decay of the protons at the Planck scale.
D. L. Khokhlov
doaj +3 more sources
The alignment and shape of dark matter, stellar, and hot gas distributions in the EAGLE and cosmo-OWLS simulations [PDF]
, 2015 We report the alignment and shape of dark matter, stellar, and hot gas distributions in the EAGLE (Evolution and Assembly of GaLaxies and their Environments) and cosmo-OWLS(Over- Whelmingly Large Simulations) simulations.
Marco Velliscig +11 more
openalex +3 more sources
Interpreting Mass and Radius Measurements of Neutron Stars with Dark Matter Halos [PDF]
The Astrophysical JournalThe high densities of neutron stars (NSs) could provide astrophysical locations for dark matter (DM) to accumulate. Depending on the DM model, these DM admixed NSs (DANSs) could have significantly different properties than pure baryonic NSs, accessible ...
Shafayat Shawqi, Sharon M. Morsink
doaj +2 more sources