Evidence for merger-driven activity in the clustering of high-redshift quasars
J Stuart B Wyithe, Abraham Loeb
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | OXFORD UNIV PRESS | Published : 2009
Recently, a very large clustering length has been measured for quasars at a redshift of z ∼ 4. In combination with the observed quasar luminosity function, we assess the implications of this clustering for the relationship between quasar luminosity and dark matter halo mass. Our analysis allows for non-linearity and finite scatter in the relation between quasar luminosity and halo mass, as well as a luminosity dependent quasar lifetime. The additional novel ingredient in our modelling is the allowance for an excess in the observed bias over the underlying halo bias owing to the merger driven nature of quasar activity. We find that the observations of clustering and luminosity function can be..View full abstract
Awarded by NASA
The research was supported by the Australian Research Council (JSBW), by NASA grants NNX08AL43G and by Harvard University funds (AL).