EDITORIAL: Highlight Notes on "Do non-relativistic neutrinos constitute the dark matter?"
- Abstract
Matter in the Universe seems to be made up to a large fraction of the so-called dark matter, the consistence of which is unknown. Searches for dark-matter particles have so far not been successful. The general belief is that they are Weakly Interacting and Massive Particles, the so-called WIMPs. The present paper uses the experimentally determined excess mass contrast of one particular cluster of galaxies (Abell 1689) fitting its radial dependence under the assumption of a thermal fermionic contribution. This yields an active fermionic mass m = 1.45 eV which is compared with different particle families and their cosmological evolution. Agreement is obtained for 3 non-relativistic massive-neutrino families which would constitute the cluster dark matter. Such massive non-relativistic neutrinos could indeed be cosmological, not causing contradiction with well-accepted cosmological evolutionary scenarios. They would condensate on the cluster at redshift z ~ 28 and would actively contribute to re-ionise the intracluster gas. This observation revives the previously abandoned neutrinos as viable dark-matter candidates at least for the Giant Cluster Abell 1689.
- BibTeX
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@article{id1543, author = {Treumann, R.A.}, doi = {10.1209/0295-5075/86/50000}, journal = {Europhysics Letters}, language = {en}, number = {5}, pages = {50000}, title = {EDITORIAL: Highlight Notes on ''Do non-relativistic neutrinos constitute the dark matter?''}, volume = {86}, year = {2009}, }
- EndNote
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%O Journal Article %A Treumann, R.A. %R 10.1209/0295-5075/86/50000 %J Europhysics Letters %G en %N 5 %P 50000 %T EDITORIAL: Highlight Notes on "Do non-relativistic neutrinos constitute the dark matter?" %V 86 %D 2009