Results 11 to 20 of about 28,541 (177)
Axions as hot and cold dark matter [PDF]
The presence of a hot dark matter component has been hinted at 3 sigma by a combination of the results from different cosmological observations. We examine a possibility that pseudo Nambu-Goldstone bosons account for both hot and cold dark matter components.
Kwang Sik Jeong+2 more
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Hot Dark Matter in Cosmology [PDF]
22 pages, including four postscript figures; to appear in D. O.
Joel R. Primack, Michael Groß
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Hot-dark matter, cold dark matter and accelerating universe
The Friedman equation is solved for a universe contains hotdark matter and cold dark matter. In this scenario, hot-dark matter drives an accelerating universe no cold dark matter.
Abbas Farmany+2 more
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Future cosmological sensitivity for hot dark matter axions [PDF]
We study the potential of a future, large-volume photometric survey to constrain the axion mass $m_a$ in the hot dark matter limit. Future surveys such as Euclid will have significantly more constraining power than current observations for hot dark matter. Nonetheless, the lowest accessible axion masses are limited by the fact that axions lighter than $
Maria Archidiacono+5 more
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THE CASE OF 1.5 eV NEUTRINO HOT DARK MATTER [PDF]
3 pages, Proceedings Marcel Grossmann XII, Paris ...
Theo M. Nieuwenhuizen
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Sterile neutrino hot, warm, and cold dark matter [PDF]
We calculate the incoherent resonant and non-resonant scattering production of sterile neutrinos in the early universe. We find ranges of sterile neutrino masses, vacuum mixing angles, and initial lepton numbers which allow these species to constitute viable hot, warm, and cold dark matter (HDM, WDM, CDM) candidates which meet observational constraints.
Kevork N. Abazajian+2 more
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Hot and Cold Dark Matter Search with GENIUS [PDF]
GENIUS is a proposal for a large volume detector to search for rare events. An array of 40-400 'naked' HPGe detectors will be operated in a tank filled with ultra-pure liquid nitrogen. After a description of performed technical studies of detector operation in liquid nitrogen and of Monte Carlo simulations of expected background components, the ...
L. Baudis+5 more
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Statistics that capture the directional dependence of the baryon distribution in the cosmic web enable unique tests of cosmology and astrophysical feedback.
M. Lokken+75 more
doaj +2 more sources