A direct measurement of the linear bias of mid-infrared-selected quasars at z ≈ 1 using cosmic microwave background lensing

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

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

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 deg2. 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.

Original languageEnglish (US)
Article numberL41
JournalAstrophysical Journal Letters
Volume776
Issue number2
DOIs
StatePublished - Oct 20 2013

Fingerprint

quasars
microwaves
power spectra
poles
telescopes
Wide-field Infrared Survey Explorer
microwave
analysis

Keywords

  • cosmology: observations

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

A direct measurement of the linear bias of mid-infrared-selected quasars at z ≈ 1 using cosmic microwave background lensing. / Geach, J. E.; Hickox, R. C.; Bleem, L. E.; Brodwin, M.; Holder, G. P.; Aird, K. A.; Benson, B. A.; Bhattacharya, S.; Carlstrom, J. E.; Chang, C. L.; Cho, H. M.; Crawford, T. M.; Crites, A. T.; De Haan, T.; Dobbs, M. A.; Dudley, J.; George, E. M.; Hainline, K. N.; Halverson, N. W.; Holzapfel, W. L.; Hoover, S.; Hou, Z.; Hrubes, J. D.; Keisler, R.; Knox, L.; Lee, A. T.; Leitch, E. M.; Lueker, M.; Luong-Van, D.; Marrone, Daniel P; McMahon, J. J.; Mehl, J.; Meyer, S. S.; Millea, M.; Mohr, J. J.; Montroy, T. E.; Myers, A. D.; Padin, S.; Plagge, T.; Pryke, C.; Reichardt, C. L.; Ruhl, J. E.; Sayre, J. T.; Schaffer, K. K.; Shaw, L.; Shirokoff, E.; Spieler, H. G.; Staniszewski, Z.; Stark, A. A.; Story, K. T.; Van Engelen, A.; Vanderlinde, K.; Vieira, J. D.; Williamson, R.; Zahn, O.

In: Astrophysical Journal Letters, Vol. 776, No. 2, L41, 20.10.2013.

Research output: Contribution to journalArticle

Geach, JE, Hickox, RC, Bleem, LE, Brodwin, M, Holder, GP, Aird, KA, Benson, BA, Bhattacharya, S, Carlstrom, JE, Chang, CL, Cho, HM, Crawford, TM, Crites, AT, De Haan, T, Dobbs, MA, Dudley, J, George, EM, Hainline, KN, Halverson, NW, Holzapfel, WL, Hoover, S, Hou, Z, Hrubes, JD, Keisler, R, Knox, L, Lee, AT, Leitch, EM, Lueker, M, Luong-Van, D, Marrone, DP, McMahon, JJ, Mehl, J, Meyer, SS, Millea, M, Mohr, JJ, Montroy, TE, Myers, AD, Padin, S, Plagge, T, Pryke, C, Reichardt, CL, Ruhl, JE, Sayre, JT, Schaffer, KK, Shaw, L, Shirokoff, E, Spieler, HG, Staniszewski, Z, Stark, AA, Story, KT, Van Engelen, A, Vanderlinde, K, Vieira, JD, Williamson, R & Zahn, O 2013, 'A direct measurement of the linear bias of mid-infrared-selected quasars at z ≈ 1 using cosmic microwave background lensing', Astrophysical Journal Letters, vol. 776, no. 2, L41. https://doi.org/10.1088/2041-8205/776/2/L41
Geach, J. E. ; Hickox, R. C. ; Bleem, L. E. ; Brodwin, M. ; Holder, G. P. ; Aird, K. A. ; Benson, B. A. ; Bhattacharya, S. ; Carlstrom, J. E. ; Chang, C. L. ; Cho, H. M. ; Crawford, T. M. ; Crites, A. T. ; De Haan, T. ; Dobbs, M. A. ; Dudley, J. ; George, E. M. ; Hainline, K. N. ; Halverson, N. W. ; Holzapfel, W. L. ; Hoover, S. ; Hou, Z. ; Hrubes, J. D. ; Keisler, R. ; Knox, L. ; Lee, A. T. ; Leitch, E. M. ; Lueker, M. ; Luong-Van, D. ; Marrone, Daniel P ; McMahon, J. J. ; Mehl, J. ; Meyer, S. S. ; Millea, M. ; Mohr, J. J. ; Montroy, T. E. ; Myers, A. D. ; Padin, S. ; Plagge, T. ; Pryke, C. ; Reichardt, C. L. ; Ruhl, J. E. ; Sayre, J. T. ; Schaffer, K. K. ; Shaw, L. ; Shirokoff, E. ; Spieler, H. G. ; Staniszewski, Z. ; Stark, A. A. ; Story, K. T. ; Van Engelen, A. ; Vanderlinde, K. ; Vieira, J. D. ; Williamson, R. ; Zahn, O. / A direct measurement of the linear bias of mid-infrared-selected quasars at z ≈ 1 using cosmic microwave background lensing. In: Astrophysical Journal Letters. 2013 ; Vol. 776, No. 2.
@article{1c9eda865f304d68be8fc8799c8d45cd,
title = "A direct measurement of the linear bias of mid-infrared-selected quasars at z ≈ 1 using cosmic microwave background lensing",
abstract = "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 deg2. 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.",
keywords = "cosmology: observations",
author = "Geach, {J. E.} and Hickox, {R. C.} and Bleem, {L. E.} and M. Brodwin and Holder, {G. P.} and Aird, {K. A.} and Benson, {B. A.} and S. Bhattacharya and Carlstrom, {J. E.} and Chang, {C. L.} and Cho, {H. M.} and Crawford, {T. M.} and Crites, {A. T.} and {De Haan}, T. and Dobbs, {M. A.} and J. Dudley and George, {E. M.} and Hainline, {K. N.} and Halverson, {N. W.} and Holzapfel, {W. L.} and S. Hoover and Z. Hou and Hrubes, {J. D.} and R. Keisler and L. Knox and Lee, {A. T.} and Leitch, {E. M.} and M. Lueker and D. Luong-Van and Marrone, {Daniel P} and McMahon, {J. J.} and J. Mehl and Meyer, {S. S.} and M. Millea and Mohr, {J. J.} and Montroy, {T. E.} and Myers, {A. D.} and S. Padin and T. Plagge and C. Pryke and Reichardt, {C. L.} and Ruhl, {J. E.} and Sayre, {J. T.} and Schaffer, {K. K.} and L. Shaw and E. Shirokoff and Spieler, {H. G.} and Z. Staniszewski and Stark, {A. A.} and Story, {K. T.} and {Van Engelen}, A. and K. Vanderlinde and Vieira, {J. D.} and R. Williamson and O. Zahn",
year = "2013",
month = "10",
day = "20",
doi = "10.1088/2041-8205/776/2/L41",
language = "English (US)",
volume = "776",
journal = "Astrophysical Journal Letters",
issn = "2041-8205",
publisher = "IOP Publishing Ltd.",
number = "2",

}

TY - JOUR

T1 - A direct measurement of the linear bias of mid-infrared-selected quasars at z ≈ 1 using cosmic microwave background lensing

AU - Geach, J. E.

AU - Hickox, R. C.

AU - Bleem, L. E.

AU - Brodwin, M.

AU - Holder, G. P.

AU - Aird, K. A.

AU - Benson, B. A.

AU - Bhattacharya, S.

AU - Carlstrom, J. E.

AU - Chang, C. L.

AU - Cho, H. M.

AU - Crawford, T. M.

AU - Crites, A. T.

AU - De Haan, T.

AU - Dobbs, M. A.

AU - Dudley, J.

AU - George, E. M.

AU - Hainline, K. N.

AU - Halverson, N. W.

AU - Holzapfel, W. L.

AU - Hoover, S.

AU - Hou, Z.

AU - Hrubes, J. D.

AU - Keisler, R.

AU - Knox, L.

AU - Lee, A. T.

AU - Leitch, E. M.

AU - Lueker, M.

AU - Luong-Van, D.

AU - Marrone, Daniel P

AU - McMahon, J. J.

AU - Mehl, J.

AU - Meyer, S. S.

AU - Millea, M.

AU - Mohr, J. J.

AU - Montroy, T. E.

AU - Myers, A. D.

AU - Padin, S.

AU - Plagge, T.

AU - Pryke, C.

AU - Reichardt, C. L.

AU - Ruhl, J. E.

AU - Sayre, J. T.

AU - Schaffer, K. K.

AU - Shaw, L.

AU - Shirokoff, E.

AU - Spieler, H. G.

AU - Staniszewski, Z.

AU - Stark, A. A.

AU - Story, K. T.

AU - Van Engelen, A.

AU - Vanderlinde, K.

AU - Vieira, J. D.

AU - Williamson, R.

AU - Zahn, O.

PY - 2013/10/20

Y1 - 2013/10/20

N2 - 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 deg2. 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.

AB - 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 deg2. 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.

KW - cosmology: observations

UR - http://www.scopus.com/inward/record.url?scp=84885362978&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84885362978&partnerID=8YFLogxK

U2 - 10.1088/2041-8205/776/2/L41

DO - 10.1088/2041-8205/776/2/L41

M3 - Article

AN - SCOPUS:84885362978

VL - 776

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

SN - 2041-8205

IS - 2

M1 - L41

ER -