A DIRECT MEASUREMENT OF THE LINEAR BIAS OF MID-INFRARED-SELECTED QUASARS AT z ≈ 1 USING COSMIC MICROWAVE BACKGROUND LENSING

We measure the cross-power spectrum of the projected mass density as traced by the convergence of the cosmic microwave background lensing field from the South Pole Telescope (SPT) and a sample of Type 1 and 2 (unobscured and obscured) quasars at 〈z〉 ~ 1 selected with the Wide-field Infrared Survey Explorer, over 2500 deg^2. The cross-power spectrum is detected at ≈7σ, and we measure a linear bias b = 1.61 ± 0.22, consistent with clustering analyses. Using an independent lensing map, derived from Planck observations, to measure the cross-spectrum, we find excellent agreement with the SPT analysis. The bias of the combined sample of Type 1 and 2 quasars determined in this work is similar to that previously determined for Type 1 quasars alone; we conclude that obscured and unobscured quasars trace the matter field in a similar way. This result has implications for our understanding of quasar unification and evolution schemes.

M. Lueker | J. E. Ruhl | Z. Staniszewski | J. E. Carlstrom | Adrian T. Lee | E. M. Leitch | C. L. Reichardt | E. M. George | K. A. Aird | B. A. Benson | L. E. Bleem | T. M. Crawford | A. T. Crites | N. W. Halverson | W. L. Holzapfel | S. Hoover | R. Keisler | D. P. Marrone | J. J. McMahon | J. Mehl | S. S. Meyer | T. E. Montroy | S. Padin | J. T. Sayre | K. K. Schaffer | E. Shirokoff | J. D. Vieira | R. Williamson | C. Pryke | L. Knox | G. P. Holder | K. Vanderlinde | K. T. Story | D. Luong-Van | J. D. Hrubes | O. Zahn | H-M. Cho | A. van Engelen | M. Brodwin | J. Dudley | J. E. Geach | A. Myers | J. Mohr | S. Meyer | A. Lee | T. Montroy | J. Ruhl | B. Benson | J. Carlstrom | C. Chang | T. Haan | M. Dobbs | N. Halverson | W. Holzapfel | S. Padin | J. Sayre | E. Shirokoff | A. Stark | K. Story | K. Vanderlinde | J. Vieira | M. Brodwin | H. Spieler | O. Zahn | L. Knox | Z. Hou | M. Millea | D. Marrone | Suman Bhattacharya | T. de Haan | J. Geach | K. Schaffer | C. Reichardt | R. Keisler | K. Aird | L. Bleem | H. Cho | T. Crawford | A. Crites | J. Dudley | E. George | G. Holder | S. Hoover | J. Hrubeš | E. Leitch | M. Lueker | D. Luong-Van | J. McMahon | J. Mehl | T. Plagge | C. Pryke | L. Shaw | Z. Staniszewski | A. V. Engelen | R. Williamson | R. Hickox | C. L. Chang | J. J. Mohr | T. de Haan | M. A. Dobbs | A. T. Lee | T. Plagge | L. Shaw | H. G. Spieler | A. A. Stark | R. C. Hickox | S. Bhattacharya | K. N. Hainline | Z. Hou | M. Millea | A. D. Myers | K. Hainline | S. Bhattacharya | A. van Engelen | C. Chang | H.-M. Cho | S. Meyer

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