Oral Presentation

The quasar clustering in a semi-analytic model based on ultra high-resolution N-body simulations

Author(s): Taira Oogi (Bunkyo University), Motohiro Enoki (Tokyo Keizai University), Tomoaki Ishiyama (University of Tsukuba), Masakazu A. R. Kobayashi (Ehime University), Ryu Makiya (University of Tokyo), Masahiro Nagashima (Bunkyo University)

Presenter: Taira Oogi (Bunkyo University)

We construct a new version of the Numerical Galaxy Catalog (Nagashima et al. 2005), a semi-analytic model of galaxy formation, with state-of-the-art cosmological N-body simulations that are carried on the K computer. The minimum dark halo mass of our simulations is ~10^10 Msun, and the box sizes are larger than 560 Mpc/h. The model includes both galaxy and quasar formations based on the hierarchical structure formation scenario. This model enables us to investigate the evolution of the large-scale quasar clustering from z~5 to z=0 for less luminous quasars as well as more luminous quasars.
In this talk, we present the evolution of the mass distribution of dark matter halo masses hosting quasars, the cross-correlation functions of quasars and galaxies, and the quasar bias, and compare these results with current observations. Furthermore, we will show a strategy for HSC quasar surveys to determine the model prescriptions of quasar formation including their parameters.