Binary Quasars at High Redshift II: Sub-Mpc Clustering at z ~ 3-4

Details Binary Quasars at High Redshift II: Sub-Mpc Clustering at z ~ 3-4 Binary Quasars at High Redshift II: Sub-Mpc Clustering at z ~ 3-4

2009-08-26

arxiv.org/abs/0908.3908v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Submitted to ApJ

Scientific paper

We present measurements of the small-scale (0.1<~ r <~ 1 Mpc/h) quasar two-point correlation function at z>2.9, for a flux-limited (i<21) sample of 15 binary quasars compiled by Hennawi et al. (2009). The amplitude of the small-scale clustering increases from z ~ 3 to z ~ 4. The small-scale clustering amplitude is comparable to or lower than power-law extrapolations (with slope gamma=2) from the large-scale correlation function of the i<20.2 quasar sample from the Sloan Digital Sky Survey. Using simple prescriptions relating quasars to dark matter halos, we model the observed small-scale clustering with halo occupation models. Reproducing the large-scale clustering amplitude requires that the active fraction of the black holes in the central galaxies of halos is near unity, but the level of small-scale clustering favors an active fraction of black holes in satellite galaxies 0.1 <~ f_s <~ 0.5 at z >~ 3.

Affiliated with

Also associated with

No associations

Rating

Binary Quasars at High Redshift II: Sub-Mpc Clustering at z ~ 3-4 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Binary Quasars at High Redshift II: Sub-Mpc Clustering at z ~ 3-4, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Binary Quasars at High Redshift II: Sub-Mpc Clustering at z ~ 3-4 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-410880