Results 51 to 60 of about 695,053 (252)
Cosmological axion and neutrino mass constraints from Planck 2015 temperature and polarization data
Physics Letters B, 2016 Axions currently provide the most compelling solution to the strong CP problem. These particles may be copiously produced in the early universe, including via thermal processes.
Eleonora Di Valentino +5 more
doaj +1 more source
Expanding Culturomics from Gut to Extreme Environmental Settings
mSystems, 2021 With the advent of metagenomics, a quest began to identify the dynamics of the microbial communities in different ecological niches. Altogether, this has resulted in identification of microorganisms but is limited to only a small number of phylogenetic ...
Utkarsh Sood, Roshan Kumar, Princy Hira
doaj +1 more source
, 2008 Caustics are a generic feature of the nonlinear growth of structure in the dark matter distribution. If the dark matter were absolutely cold, its mass density would diverge at caustics, and the integrated annihilation probability would also diverge for ...
Alard +23 more
core +1 more source
Hot Dark Matter in Cosmology [PDF]
, 2001 22 pages, including four postscript figures; to appear in D. O.
Primack, Joel R., Gross, Michael A. K.
openaire +2 more sources
Massive Dark Photons as Hot Dark Matter
Acta Physica Polonica B, 2022 Motivated by the growing interest in the existence of new massive gauge bosons, we suggest that massive dark photons A0 can be a consequence of a broken new abelian symmetry U(1)'X. Such a dark symmetry U(1)'D is afterwards supposed to be associated with the conservation of the weak number W belonging to the Weakling Interacting Slim Particles U(1)'W ...
openaire +2 more sources
Cosmological Simulation for Fuzzy Dark Matter Model
Frontiers in Astronomy and Space Sciences, 2019 Fuzzy Dark Matter (FDM), motivated by string theory, has recently become a hot candidate for dark matter. The rest mass of FDM is believed to be ~10−22eV and the corresponding de-Broglie wave length is ~1kpc. Therefore, the quantum effect of FDM plays an
Jiajun Zhang, Hantao Liu, Ming-Chung Chu
doaj +1 more source
Warm and fuzzy dark matter: Free streaming of wave dark matter [PDF]
Physical Review DWave or fuzzy dark matter that is produced with relativistic wave numbers exhibits free-streaming effects analogous to warm or hot particle dark matter with relativistic momenta.
Rayne Liu, Wayne Hu, Huangyu Xiao
semanticscholar +1 more source
The Open Journal of Astrophysics, 2021 We apply the squeezed state formalism to scalar field dark matter (e.g. axion) perturbations generated during inflation. As for the inflationary perturbations, the scalar field state becomes highly squeezed as modes exit the horizon. For as long as $H>m_\
Jondalar L. J. Kuß, David J. E. Marsh
doaj +1 more source
Too hot to handle? Analytic solutions for massive neutrino or warm dark matter cosmologies [PDF]
, 2017 Author(s): Slepian, Z; Portillo, SKN | Abstract: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. We obtain novel closed-form solutions to the Friedmann equation for cosmological models containing a ...
Z. Slepian, S. Portillo
semanticscholar +1 more source
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
semanticscholar +1 more source