The Abundance of QSOs in Various Cold Dark Matter Models |
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Authors: | Wen-Bin Lin Yao-Quan Chu |
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Institution: | (1) Center for Astrophysics, University of Science and Technology of China, Hefei, Anhui, 230026, China |
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Abstract: | Based on the statistics of the peaks in the random Gaussian field, we put forward a method to model the evolution of quasars, which are assumed to be a phenomenon of the early stages for some massive galaxies. Our calculations show that the cold-hot mixed dark matter model with h = 0.3 cannot match the observed quasar abundance at redshift z = 4.5, and other prevailing CDM models, such as the mixed dark matter model with h = 0.2, the tilted CDM models with n = 0.7 or 0.8, and the flat CDM models with ![Ogr](/content/p2724l108132770h/xxlarge927.gif) = 0.6 or 0.7, are compatible with the observation of the abundance of QSOs on the range of z = 2-5. |
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