Abstract
We present measurements of secondary cosmic microwave background (CMB) anisotropies and cosmic infrared background (CIB) fluctuations using data from the South Pole Telescope (SPT) covering the complete 2540 deg2SPT-SZ survey area. Data in the three SPT-SZ frequency bands centered at 95, 150, and 220 GHz, are used to produce six angular power spectra (three single-frequency auto-spectra and three cross-spectra) covering the multipole range 2000 < ℓ < 11,000 (angular scales 5′ ≳ θ ≳ 1′). These are the most precise measurements of the angular power spectra at ℓ > 2500 at these frequencies. The main contributors to the power spectra at these angular scales and frequencies are the primary CMB, CIB, thermal and kinematic Sunyaev-Zel'dovich effects (tSZ and kSZ), and radio galaxies. We include a constraint on the tSZ power from a measurement of the tSZ bispectrum from 800 deg2 of the SPT-SZ survey. We measure the tSZ power at 143 GHz to be D3000 tSZ = 4.08-0.67 +0.58μK2 and the kSZ power to be D3000 kSZ = 2.9 ± 1.3 μK2. The data prefer positive kSZ power at 98.1% CL. We measure a correlation coefficient of ξ = 0.113-0.054 +0.057 between sources of tSZ and CIB power, with ξ < 0 disfavored at a confidence level of 99.0%. The constraint on kSZ power can be interpreted as an upper limit on the duration of reionization. When the post-reionization homogeneous kSZ signal is accounted for, we find an upper limit on the duration Δz < 5.4 at 95% CL.
| Original language | English (US) |
|---|---|
| Article number | 177 |
| Journal | Astrophysical Journal |
| Volume | 799 |
| Issue number | 2 |
| DOIs | |
| State | Published - Feb 1 2015 |
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Keywords
- Cosmic background radiation
- Cosmology: observations
- Dark ages, reionization, first stars
- Diffuse radiation
- Large-scale structure of universe
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science
Cite this
A measurement of secondary cosmic microwave background anisotropies from the 2500 square-degree SPT-SZ survey. / George, E. M.; Reichardt, C. L.; Aird, K. A.; Benson, B. A.; Bleem, L. E.; Carlstrom, J. E.; Chang, C. L.; Cho, H. M.; Crawford, T. M.; Crites, A. T.; De Haan, T.; Dobbs, M. A.; Dudley, J.; Halverson, N. W.; Harrington, N. L.; Holder, G. P.; Holzapfel, W. L.; Hou, Z.; Hrubes, J. D.; Keisler, R.; Knox, L.; Lee, A. T.; Leitch, E. M.; Lueker, M.; Luong-Van, D.; Mcmahon, J. J.; Mehl, J.; Meyer, S. S.; Millea, M.; Mocanu, L. M.; Mohr, J. J.; Montroy, T. E.; Padin, S.; Plagge, T.; Pryke, C.; Ruhl, J. E.; 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, Vol. 799, No. 2, 177, 01.02.2015.Research output: Contribution to journal › Review article
}
TY - JOUR
T1 - A measurement of secondary cosmic microwave background anisotropies from the 2500 square-degree SPT-SZ survey
AU - George, E. M.
AU - Reichardt, C. L.
AU - Aird, K. A.
AU - Benson, B. A.
AU - Bleem, L. E.
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 - Halverson, N. W.
AU - Harrington, N. L.
AU - Holder, G. P.
AU - Holzapfel, W. L.
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 - Mcmahon, J. J.
AU - Mehl, J.
AU - Meyer, S. S.
AU - Millea, M.
AU - Mocanu, L. M.
AU - Mohr, J. J.
AU - Montroy, T. E.
AU - Padin, S.
AU - Plagge, T.
AU - Pryke, C.
AU - Ruhl, J. E.
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 - 2015/2/1
Y1 - 2015/2/1
N2 - We present measurements of secondary cosmic microwave background (CMB) anisotropies and cosmic infrared background (CIB) fluctuations using data from the South Pole Telescope (SPT) covering the complete 2540 deg2SPT-SZ survey area. Data in the three SPT-SZ frequency bands centered at 95, 150, and 220 GHz, are used to produce six angular power spectra (three single-frequency auto-spectra and three cross-spectra) covering the multipole range 2000 < ℓ < 11,000 (angular scales 5′ ≳ θ ≳ 1′). These are the most precise measurements of the angular power spectra at ℓ > 2500 at these frequencies. The main contributors to the power spectra at these angular scales and frequencies are the primary CMB, CIB, thermal and kinematic Sunyaev-Zel'dovich effects (tSZ and kSZ), and radio galaxies. We include a constraint on the tSZ power from a measurement of the tSZ bispectrum from 800 deg2 of the SPT-SZ survey. We measure the tSZ power at 143 GHz to be D3000 tSZ = 4.08-0.67 +0.58μK2 and the kSZ power to be D3000 kSZ = 2.9 ± 1.3 μK2. The data prefer positive kSZ power at 98.1% CL. We measure a correlation coefficient of ξ = 0.113-0.054 +0.057 between sources of tSZ and CIB power, with ξ < 0 disfavored at a confidence level of 99.0%. The constraint on kSZ power can be interpreted as an upper limit on the duration of reionization. When the post-reionization homogeneous kSZ signal is accounted for, we find an upper limit on the duration Δz < 5.4 at 95% CL.
AB - We present measurements of secondary cosmic microwave background (CMB) anisotropies and cosmic infrared background (CIB) fluctuations using data from the South Pole Telescope (SPT) covering the complete 2540 deg2SPT-SZ survey area. Data in the three SPT-SZ frequency bands centered at 95, 150, and 220 GHz, are used to produce six angular power spectra (three single-frequency auto-spectra and three cross-spectra) covering the multipole range 2000 < ℓ < 11,000 (angular scales 5′ ≳ θ ≳ 1′). These are the most precise measurements of the angular power spectra at ℓ > 2500 at these frequencies. The main contributors to the power spectra at these angular scales and frequencies are the primary CMB, CIB, thermal and kinematic Sunyaev-Zel'dovich effects (tSZ and kSZ), and radio galaxies. We include a constraint on the tSZ power from a measurement of the tSZ bispectrum from 800 deg2 of the SPT-SZ survey. We measure the tSZ power at 143 GHz to be D3000 tSZ = 4.08-0.67 +0.58μK2 and the kSZ power to be D3000 kSZ = 2.9 ± 1.3 μK2. The data prefer positive kSZ power at 98.1% CL. We measure a correlation coefficient of ξ = 0.113-0.054 +0.057 between sources of tSZ and CIB power, with ξ < 0 disfavored at a confidence level of 99.0%. The constraint on kSZ power can be interpreted as an upper limit on the duration of reionization. When the post-reionization homogeneous kSZ signal is accounted for, we find an upper limit on the duration Δz < 5.4 at 95% CL.
KW - Cosmic background radiation
KW - Cosmology: observations
KW - Dark ages, reionization, first stars
KW - Diffuse radiation
KW - Large-scale structure of universe
UR - http://www.scopus.com/inward/record.url?scp=84922551822&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84922551822&partnerID=8YFLogxK
U2 - 10.1088/0004-637X/799/2/177
DO - 10.1088/0004-637X/799/2/177
M3 - Review article
AN - SCOPUS:84922551822
VL - 799
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 2
M1 - 177
ER -