Statistics – Computation
Scientific paper
Jan 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...208....1d&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 208, no. 1-2, Jan. 1989, p. 1-13. Research supported by SNSF.
Statistics
Computation
20
Computational Astrophysics, Dark Matter, Gauge Theory, Mass To Light Ratios, Nuclear Astrophysics, Perturbation Theory, Astronomical Models, Baryons, Galactic Evolution, Neutrinos, Relic Radiation
Scientific paper
A flat Friedmann universe comprising massive collisionless particles (dark matter), massless neutrinos, and radiation is characterized theoretically. The gauge-invariant cosmological perturbation equations are derived and solved numerically, and the results are presented in graphs and discussed in detail. The spectra for cold and hot dark matter are shown to be in good agreement with the predictions of Bond and Szalay (1983); primary candidates are photinos, gravitinos, axions and other hypothetical particles of mass about 1 MeV for cold dark matter (maximum total mass about 10 to the 6th solar masses) and neutrinos of mass 10-100 MeV for hot dark matter (maximum total mass about 10 to the 16th solar masses).
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