Results 71 to 80 of about 28,541 (177)
Decay-Produced Neutrino Hot Dark Matter
Physical Review Letters, 1998 We investigate different types of neutrino hot dark matter with respect to structure formation and anisotropies in the cosmic microwave background radiation (CMBR). The possibility of neutrino hot dark matter produced through the decay of a heavier neutrino by the process nu_H -> nu_L + phi, where phi is a scalar particle, is discussed in detail ...
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The Astrophysical JournalModified Newtonian dynamics (MOND) was originally proposed to model galaxy rotation curves without dark matter. However, MOND presents difficulties in explaining the radial acceleration relation observed in galaxy clusters, and moreover, it does not ...
Robert Monjo
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Upper bound on hot dark matter density from SO(10) Yukawa unification [PDF]
, 1994 Andrea Brignole +2 more
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Cooling of Neutron Stars admixed with light dark matter: A case study
Physics Letters B, 2022 Neutron Stars (NSs) are born as hot, lepton-rich objects that evolve according to the standard paradigm through subsequent stages where they radiate the excess of energy by emitting, first, neutrinos and, later on, photons.
M. Ángeles Pérez-García +4 more
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Breakdown of Chiral Perturbation Theory for the Axion Hot Dark Matter Bound [PDF]
, 2021 Luca Di Luzio, G. Martinelli, G. Piazza
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Refracted Gravity Solutions from Small to Large Scales
AstronomyIf visible matter alone is present in the Universe, general relativity (GR) and its Newtonian weak field limit (WFL) cannot explain several pieces of evidence, from the largest to the smallest scales.
Valentina Cesare
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CνB Damping of Primordial Gravitational Waves and the Fine-Tuning of the CγB Temperature Anisotropy
Advances in High Energy Physics, 2014 Damping of primordial gravitational waves due to the anisotropic stress contribution owing to the cosmological neutrino background (CνB) is investigated in the context of a radiation-to-matter dominated universe.
A. E. Bernardini, J. F. G. Santos
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Hydro-Gravitational Dynamics of Planets and Dark Energy
Journal of Applied Fluid Mechanics, 2009 Self gravitational fluid mechanical methods termed hydro-gravitational-dynamics (HGD) predict plasma fragmentation 0.03 Myr after the turbulent big bang to form protosuperclustervoids, turbulent protosuperclusters, and protogalaxies at the 0.3 Myr ...
Carl H. Gibson, R.E, Schild
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Constraints on massive neutrinos as hot dark matter
Nuclear Physics B - Proceedings Supplements, 1996 This article highlights three astronomical observations that can constrain the masses of neutrinos as hot dark matter: high-redshift damped Lyα systems, the cosmic microwave background anisotropy, and gravitational lenses. Theoretical predictions and current constraints are summarized.
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A Warm-Plus-Hot Dark Matter Universe
, 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 $\sim 25h^2$~eV while the warm component is a sterile neutrino with mass $\sim 700h^2$~eV. The two types of dark matter arise entirely within the neutrino sector and do not require
Malaney, R. A. +2 more
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