Results 21 to 30 of about 144,169 (298)
Warm dark Matter constraints from the joint analysis of CMB, Lyman-α, and global 21 cm data [PDF]
Monthly notices of the Royal Astronomical Society, 2023 With the help of our previously built MCMC-based parameter estimation package CosmoReionMC, we investigate in detail the potential of 21 cm global signal, when combined with CMB and observations related to the QSO absorption spectra, to constraint the ...
Atrideb Chatterjee, T. R. Choudhury
semanticscholar +1 more source
Warm Dark Matter from Higher-Dimensional Gauge Theories
Universe, 2021 Warm dark matter particles with masses in the keV range have been linked with the large group representations in gauge theories through a high number of species at decoupling.
Sinziana Paduroiu +3 more
doaj +1 more source
Primordial black-hole dark matter via warm natural inflation
Physics Letters B, 2022 We report on a study of the natural warm inflationary paradigm (WNI). We show two important new results arise in this model. One is that the observational constraints on the primordial power spectrum from the cosmic microwave background (CMB) can be ...
Miguel Correa +3 more
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Decaying warm dark matter revisited [PDF]
Journal of Cosmology and Astroparticle Physics, 2022 Decaying dark matter models provide a physically motivated way of channeling energy between the matter and radiation sectors. In principle, this could affect the predicted value of the Hubble constant in such a way as to accommodate the discrepancies ...
Emil Brinch Holm, T. Tram, S. Hannestad
semanticscholar +1 more source
New constraints on warm dark matter from the Lyman-
Physical Review D, 2022 The forest of Lyman-$\alpha$ absorption lines detected in the spectra of distant quasars encodes information on the nature and properties of dark matter and the thermodynamics of diffuse baryonic material.
B. Villasenor +3 more
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Estimating the warm dark matter mass from strong lensing images with truncated marginal neural ratio estimation [PDF]
, 2022 Precision analysis of galaxy-galaxy strong gravitational lensing images provides a unique way of characterizing small-scale dark matter halos, and could allow us to uncover the fundamental properties of dark matter's constituents. Recently, gravitational
Noemi Anau Montel +4 more
semanticscholar +1 more source
Constraining Warm Dark Matter and Population III Stars with the Global 21 cm Signal [PDF]
Astrophysical Journal, 2022 Upcoming ground- and space-based experiments may have sufficient accuracy to place significant constraints upon high-redshift star formation, Reionization, and dark matter (DM) using the global 21 cm signal of the intergalactic medium.
J. Hibbard +5 more
semanticscholar +1 more source
A model for mixed warm and hot right-handed neutrino dark matter
Journal of High Energy Physics, 2021 We discuss a model where a mixed warm and hot keV neutrino dark matter rises naturally. We arrange active and sterile neutrinos in the same SU(3) L multiplet, with the lightest sterile neutrino being dark matter.
Maíra Dutra +3 more
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Dark matter in astrophysics/cosmology
SciPost Physics Lecture Notes, 2022 These lecture notes aim to provide an introduction to dark matter from the perspective of astrophysics/cosmology. We start with a rapid overview of cosmology, including the evolution of the Universe, its thermal history and structure formation.
Anne M. Green
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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
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