Redshift evolution of the X-ray AGN linear bias factor, as derived from a number of recent studies indicated in the plot. The bias values shown correspond to a flat Λ CDM cosmologicalmodel with Ωm = 0.3 and σ8 = 0.81. The black continuous curve corresponds to the bias evolution model of Basilakos et al. (2008) for a DM host halo mass of Mh = 1013.04h−1M⊙, while the magenta dashed line corresponds to the model of Tinker et al. (2010) for Mh = 1012.96h−1M⊙.
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