The Current Status of Massive Neutrinos as Dark Matter

Details The Current Status of Massive Neutrinos as Dark Matter The Current Status of Massive Neutrinos as Dark Matter

Apr 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aps..apr..k304m&link_type=abstract

American Physical Society, APS/AAPT Joint Meeting, April 18-21, 1997, abstract #K3.04

Astronomy and Astrophysics

Astronomy

Scientific paper

The nature of dark matter remains one of the most intriguing unsolved mysteries in astronomy, while the masses of neutrinos are among the most elusive measurements in physics. If neutrinos are massive, they will be a component of the hot dark matter and can affect the gravitational clustering of all matter in the Universe. I will discuss the current constraints on the neutrino mass from cosmology, and the current status of the cold+hot dark matter models of structure formation. Although the massive neutrinos help to alleviate the problem of excessive galaxy clustering at low redshifts in the standard cold dark matter model, galaxies form late in these models due to the reduced clustering power. A very tight upper limit on the neutrino mass can be obtained by studying the observations and theoretical predictions of the abundances of high-redshift galactic structures such as the damped Lyman-alpha systems.

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