A Study of Warm Dark Matter, the Missing Satellites Problem, and the UV Luminosity Cut-Off [PDF]
International Journal of Astronomy and Astrophysics International Journal of Astronomy and Astrophysics, 2022 In the warm dark matter scenario, the Press-Schechter formalism is valid only for galaxy masses greater than the"velocity dispersion cut-off". In this work we extend the predictions to masses below the velocity dispersion cut-off, and thereby address the"
B. Hoeneisen
semanticscholar +1 more source
Entering the era of measuring sub-Galactic dark matter structure: Accurate transfer functions for axino, gravitino, and sterile neutrino thermal warm dark matter [PDF]
Physical Review D, 2022 We examine thermal warm dark matter (WDM) models that are being probed by current constraints, and the relationship between the particle dark matter spin and commensurate thermal history.
Cannon M. Vogel, K. Abazajian
semanticscholar +1 more source
Warm dark matter constraints using Milky Way satellite observations and subhalo evolution modeling [PDF]
Physical Review D, 2021 Warm dark matter (WDM) can potentially explain small-scale observations that currently challenge the cold dark matter (CDM) model, as warm particles suppress structure formation due to free-streaming effects.
A. Dekker +3 more
semanticscholar +1 more source
Inverse seesaw model with a modular S 4 symmetry: lepton flavor mixing and warm dark matter [PDF]
Journal of Cosmology and Astroparticle Physics, 2021 In this paper, we present a systematic investigation on simple inverse seesaw models for neutrino masses and flavor mixing based on the modular S 4 symmetry.
Xinyi Zhang, Shun Zhou
semanticscholar +1 more source
Are James Webb Space Telescope Observations Consistent with Warm Dark Matter? [PDF]
International Journal of Astronomy and Astrophysics International Journal of Astronomy and AstrophysicsWe compare observed with predicted distributions of galaxy stellar masses $M_*$ and galaxy rest-frame ultra-violet luminosities per unit bandwidth $L_{UV}$, in the redshift range $z = 2$ to 13.
B. Hoeneisen
semanticscholar +1 more source
Primordial black holes dark matter and secondary gravitational waves from warm Higgs-G inflation [PDF]
Journal of Cosmology and Astroparticle Physics, 2023 We explore the role of dissipative effects during warm inflation leading to the small-scale enhancement of the power spectrum of curvature perturbations.
R. Arya, R. K. Jain, A. Mishra
semanticscholar +1 more source
A new recipe for $$\Lambda $$ Λ CDM
European Physical Journal C: Particles and Fields, 2017 It is well known that a canonical scalar field is able to describe either dark matter or dark energy but not both. We demonstrate that a non-canonical scalar field can describe both dark matter and dark energy within a unified setting.
Varun Sahni, Anjan A. Sen
doaj +1 more source
Matter power spectrum of light freeze-in dark matter: With or without self-interaction
Physics Letters B, 2020 We study the free-streaming effect in a light freeze-in dark matter model. Naturally in the dark sector one can find dark matter related coupling, and such coupling may induce dark matter self-scattering.
Ran Huo
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Comments on Warm Dark Matter Measurements and Limits
International Journal of Astronomy and Astrophysics International Journal of Astronomy and Astrophysics, 2022 Observed spiral galaxy rotation curves allow a measurement of the warm dark matter particle velocity dispersion and mass. The measured thermal relic mass 100 h m ≈ eV is in disagreement with limits, typically in the range 1 to 4 keV.
B. Hoeneisen
semanticscholar +1 more source
Warm Surprises from Cold Duets: N-Body Simulations with Two-Component Dark Matter [PDF]
Progress of Theoretical and Experimental Physics, 2023 We explore extensive N-body simulations with two-component cold dark matter candidates. We delve into the temperature evolution, power spectrum, density perturbation, and maximum circular velocity functions. We find that the substantial mass difference
Jeong Han Kim +3 more
semanticscholar +1 more source