Results 11 to 20 of about 164,168 (293)
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
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
Discretely Charged Dark Matter in Inflation Models Based on Holographic Space-Time [PDF]
Universe, 2022 The holographic space-time (HST) model of inflation has a potential explanation for dark matter as tiny primordial black holes. Motivated by a recent paper of Barrau, we propose a version of this model where some of the inflationary black holes (IBHs ...
Tom Banks, Willy Fischler
doaj +2 more sources
Axion hot dark matter bounds after Planck [PDF]
Journal of Cosmology and Astroparticle Physics, 2013 20 pages, 8 figures, matches version published in JCAP 1310 (2013 ...
Archidiacono M +4 more
openaire +6 more sources
Interference with gravitational instability: Hot and fuzzy dark matter
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 fluctuations generated by the interference of high-momenta waves are gravitationally unstable in ...
Rayne Liu, Wayne Hu, Huangyu Xiao
openaire +3 more sources
Constraining hot dark matter sub-species with weak lensing and the cosmic microwave background radiation [PDF]
Astronomy & Astrophysics, 2023 Although it is well known that the bulk of dark matter (DM) has to be cold, the existence of an additional sub-dominant, hot species remains a valid possibility.
F. H. Peters +4 more
semanticscholar +1 more source
Breakdown of Chiral Perturbation Theory for the Axion Hot Dark Matter Bound. [PDF]
Physical Review Letters, 2021 We show that the commonly adopted hot dark matter bound on the axion mass m_{a}≲1 eV is not reliable, since it is obtained by extrapolating the chiral expansion in a region where the effective field theory breaks down.
Luca Di Luzio, G. Martinelli, G. Piazza
semanticscholar +1 more source
Merger Effects on the Spin and Shape Alignments of Galaxy Stellar, Cold Gas, Hot Gas, and Dark Matter Components [PDF]
Astrophysical Journal, 2022 We present a numerical evidence supporting the scenario that the peculiar alignments of the galaxy stellar spins with the major principal axes of the local tidal tensors are produced during the quiescent evolution period when the galaxies experience no ...
Jounghun Lee, Jun-Sung Moon
semanticscholar +1 more source
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 perturbations can survive. Smaller scale perturbations are damped due to neutrino diffusion.
Atrio-Barandela, Fernando +1 more
openaire +2 more sources
Dark matter and gravitational waves from a dark big bang [PDF]
Physical Review D, 2023 The Hot Big Bang is often considered as the origin of all matter and radiation in the Universe. Primordial nucleosynthesis (BBN) provides strong evidence that the early Universe contained a hot plasma of photons and baryons with a temperature $T>\text ...
K. Freese, M. W. Winkler
semanticscholar +1 more source