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The hot dark matter paradox

Nuclear Physics B - Proceedings Supplements, 2000
Abstract Direct observations favor a low-mass-density universe, but a critical density universe with a neutrino component of dark matter provides the best model for explaining the observed structure of the universe over more than three orders of magnitude in distance scale.
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How Hot Is Dark Matter?

Science, 2012
Astronomers still don't know what the unseen "dark matter" is that provides the gravity that holds the galaxies together, but they may soon be able to narrow in on its most basic properties.
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Hot Dark Matter

2004
Dark matter made of light neutrinos, with massesof a few electron-volts (eV) or less, is called`hot dark matter' (HDM) by cosmologists. Lightneutrinos would have been `hot', moving at nearlythe speed of light, in the early universe.
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SINGLET NEUTRINOS AS HOT DARK MATTER

Modern Physics Letters A, 1993
A model is presented that generates mass and magnetic moment matrices for singlet neutrinos radiatively at one-loop level. It allows the singlet neutrinos to account for the hot dark matter and the anomalous ionization of interstellar hydrogen.
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The status of hot dark matter after SNO

Nuclear Physics B - Proceedings Supplements, 2002
Abstract While the combined SNO-SuperKamiokande solar results require only the three known active neutrinos, adding the atmospheric neutrino and LSND input would require a fourth, sterile neutrino, ν s . The LSND results, which alone force appreciable hot dark matter, are unlikely to be accommodated by a 3+1 neutrino scheme, so it is important to ...
S. J. Yellin, D. O. Caldwell, Rabindra N. Mohapatra   +2 more
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Effect of generic dark matter halo on transonic accretion onto galactic black holes

The environment surrounding a black hole or black hole binaries is generally expected to play an important role in understanding various astrophysical phenomena around them.
Avijit Chowdhury, Gargi Sen, Sayan Chakrabarti, Santabrata Das   +3 more
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MAPPING DARK MATTER IN HOT STELLAR SYSTEMS

International Journal of Modern Physics D, 1994
Recent work on the dynamics of elliptical galaxies suggests that it is possible to determine the radial distribution of mass in hot stellar systems using only line-of-sight velocities of a sample of stars, without any a priori assumptions about either the relative distribution of dark and luminous components, or the stellar velocity distribution.
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EXPERIMENTS ON WIMPS, SIMPS, AND HOT DARK MATTER

International Journal of Modern Physics D, 1994
The particle which constitutes more than 90% of the mass of the universe is not one of those in the Standard Model of particle physics. The search for this dark matter particle has now eliminated or severely restricted many candidates. While accelerator-produced results and indirect searches have helped, the most extensive exclusions have come from ...
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Experimental searches for hot and cold dark matter

Nuclear Physics B - Proceedings Supplements, 1997
A way to fix the overproduction by cold dark matter of small-scale structure in the universe is to add hot dark matter in the form of neutrinos. Unlike cold dark matter, such as supersymmetric neutralinos, which very likely could be detected directly, the nature of the neutrinos must be determined from terrestrial experiments.
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Large Extra Dimensions and Hot Dark Matter

2001
A neutrino mass-mixing scheme which explains qualitatively all present evidence for neutrino mass (the solar and atmospheric neutrino deficits, LSND, and significant hot dark matter) also successfully avoids the “alpha effect”, allowing r-process nucleosynthesis in the neutrino-heated ejecta of supernovae. The properties of neutrinos required to ensure
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