Journal Article

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

Martin White, Paul Martini and J. D. Cohn

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 390, issue 3, pages 1179-1184
Published in print November 2008 | ISSN: 0035-8711
Published online October 2008 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2008.13817.x
Constraints on the correlation between QSO luminosity and host halo mass from high-redshift quasar clustering

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Recent measurements of high-redshift quasar (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 LMh relation to be less than 50 per cent at 99 per cent confidence for the most conservative case of a 100 per cent 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 MBH–σ relation and the ratio of bolometric to Eddington luminosity of luminous QSOs.

Keywords: quasars: general; dark matter; large-scale structure of Universe

Journal Article.  5208 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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