Constraints on the correlation between QSO luminosity and host halo mass from high-redshift quasar clustering

Details Constraints on the correlation between QSO luminosity and host halo mass from high-redshift quasar clustering Constraints on the correlation between QSO luminosity and host halo mass from high-redshift quasar clustering

2007-11-26

arxiv.org/abs/0711.4109v2

Astronomy and Astrophysics

Astrophysics

6 pages, 4 figures. Minor revisions to address questions from referee. References updated

Scientific paper

10.1111/j.1365-2966.2008.13817.x

Recent measurements of high-redshift QSO clustering from the Sloan Digital Sky Survey indicate that QSOs at z~4 have a bias b~14. We find that this extremely high clustering amplitude, combined with the corresponding space density, constrains the dispersion in the L-Mhalo relation to be less than 50% at 99% confidence for the most conservative case of a 100% duty cycle. This upper limit to the intrinsic dispersion provides as strong a constraint as current upper limits to the intrinsic dispersion in the local M_BH-sigma relation and the ratio of bolometric to Eddington luminosity of luminous QSOs.

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