BINARY QUASARS AT HIGH REDSHIFT. II. SUB-Mpc CLUSTERING ATz∼ 3-4

2009/08/26 by Yue Shen, Joseph F. Hennawi, Francesco Shankar +10 · 5 citations
Environmental Science · Mathematics · Physics and Astronomy · #Amplitude #Astronomy #Astrophysics #Cluster analysis #Correlation function (quantum field theory) #Dark matter #Galaxies: Formation, Evolution, Phenomena #Galaxy #Halo #Mathematics #Physics #Quasar #Redshift #Remote Sensing in Agriculture #Scientific Research and Discoveries #Sky #Statistics #astro-ph.CO #astro-ph.GA

paper · pdf · doi:10.1088/0004-637x/719/2/1693

Submitted to ApJ

arxiv created 2009/08/26 · openalex publication_date 2010/08/03 · arxiv updated 2015/05/14 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We present measurements of the small-scale (0.1 ≲ r ≲ 1 h^(-1) Mpc) 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. 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 (assuming a fixed slope γ = 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. We found that the level of small-scale clustering favors an active fraction of black holes in (M ≳ 10^(13) h^(–1) M_☉) satellite halos f_s ≳ 0.1 at z ≳ 3.

Citations

• Quasar Clustering at 25h−1kpc from a Complete Sample of Binaries1
• Very Small Scale Clustering and Merger Rate of Luminous Red Galaxies
• Clustering of High-Redshift (z≥ 2.9) Quasars from the Sloan Digital Sky Survey
• The evolution of faint AGN between z ≃ 1 and z ≃ 5 from the COMBO-17 survey
• A survey of galaxy redshifts. V - The two-point position and velocity correlations
• On the Mass‐to‐Light Ratio of Large‐Scale Structure
• BINARY QUASARS AT HIGH REDSHIFT. I. 24 NEW QUASAR PAIRS ATz∼ 3-4
• Discovery of a Probable Physical Triple Quasar

Cited by

• OCCUPATION OF X-RAY-SELECTED GALAXY GROUPS BY X-RAY ACTIVE GALACTIC NUCLEI
• BINARY QUASARS AT HIGH REDSHIFT. I. 24 NEW QUASAR PAIRS ATz∼ 3-4
• A Candidate Kiloparsec-scale Quasar Pair at z = 5.66
• THE HALO OCCUPATION DISTRIBUTION OF X-RAY-BRIGHT ACTIVE GALACTIC NUCLEI: A COMPARISON WITH LUMINOUS QUASARS
• A CONSTRAINT ON QUASAR CLUSTERING AT z = 5 FROM A BINARY QUASAR*

Related

• Quasar Clustering at 25h−1kpc from a Complete Sample of Binaries1
• THE CLUSTERING OF QUASARS
• Quasar clustering and duty cycle measurements at 0≤ z≤ 4 with the Gaia-unWISE Catalog
• Quasar Pairs as Large--Scale Structure tracers
• A first look at quasar-galaxy clustering at z≃7.3