Abundance and evolution of quasars in cold dark matter models

Details Abundance and evolution of quasars in cold dark matter models Abundance and evolution of quasars in cold dark matter models

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...411l...1n&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 411, no. 1, p. L1-L4.

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35

Abundance, Astronomical Models, Dark Matter, Galactic Evolution, Quasars, Black Holes (Astronomy), Computational Astrophysics, Red Shift

Scientific paper

We invoke the constraints imposed on currently viable inflationary dark matter models by the abundance of quasars at all redshifts. A simple model for the evolution of the number density of quasars is developed by assuming that the host galaxies form at peaks of the linear density field. Short quasar lifetimes corresponding to quasars radiating at the Eddington limit are required in order to account for the abundance and number evolution of quasars. Only if the quasar lifetime is about 10 exp 7 yr can the tilted CDM model with n about 0.7, the scaled CDM model, and the mixed model all account for the observed quasar abundance at high redshift.

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