A measurement of arcminute anisotropy in the cosmic microwave background with the sunyaev-zel'dovich array

Matthew K. Sharp; Daniel P. Marrone; John E. Carlstrom; Thomas Culverhouse; Christopher Greer; David Hawkins; Ryan Hennessy; Marshall Joy; James W. Lamb; Erik M. Leitch; Michael Loh; Amber Miller; Tony Mroczkowski; Stephen Muchovej; Clem Pryke; David Woody

doi:10.1088/0004-637X/713/1/82

A measurement of arcminute anisotropy in the cosmic microwave background with the sunyaev-zel'dovich array

Matthew K. Sharp, Daniel P. Marrone, John E. Carlstrom, Thomas Culverhouse, Christopher Greer, David Hawkins, Ryan Hennessy, Marshall Joy, James W. Lamb, Erik M. Leitch, Michael Loh, Amber Miller, Tony Mroczkowski, Stephen Muchovej, Clem Pryke, David Woody

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

We present 30 GHz measurements of the angular power spectrum of the cosmic microwave background (CMB) obtained with the Sunyaev-Zel'dovich Array. The measurements are sensitive to arcminute angular scales, where secondary anisotropy from the Sunyaev-Zel'dovich effect (SZE) is expected to dominate. For a broad bin centered at multipole 4066, we find 67⁺⁷⁷ _-50 μK²; of which 26 ± 5 μK² is the expected contribution from primary CMB anisotropy and 80 ± 54 μK² is the expected contribution from undetected radio sources. These results imply an upper limit of 155 μK² (95% CL) on the secondary contribution to the anisotropy in our maps. This level of SZE anisotropy power is consistent with expectations based on recent determinations of the normalization of the matter power spectrum, i.e., σ ∼ ₈ 0.8.

Original language	English (US)
Pages (from-to)	82-89
Number of pages	8
Journal	Astrophysical Journal
Volume	713
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/713/1/82
State	Published - 2010

Keywords

Cosmic background radiation
Cosmological parameters
Cosmology: observations
Large-scale structure of universe
Techniques: interferometric

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Sharp, M. K., Marrone, D. P., Carlstrom, J. E., Culverhouse, T., Greer, C., Hawkins, D., Hennessy, R., Joy, M., Lamb, J. W., Leitch, E. M., Loh, M., Miller, A., Mroczkowski, T., Muchovej, S., Pryke, C., & Woody, D. (2010). A measurement of arcminute anisotropy in the cosmic microwave background with the sunyaev-zel'dovich array. Astrophysical Journal, 713(1), 82-89. https://doi.org/10.1088/0004-637X/713/1/82

Sharp, MK, Marrone, DP, Carlstrom, JE, Culverhouse, T, Greer, C, Hawkins, D, Hennessy, R, Joy, M, Lamb, JW, Leitch, EM, Loh, M, Miller, A, Mroczkowski, T, Muchovej, S, Pryke, C & Woody, D 2010, 'A measurement of arcminute anisotropy in the cosmic microwave background with the sunyaev-zel'dovich array', Astrophysical Journal, vol. 713, no. 1, pp. 82-89. https://doi.org/10.1088/0004-637X/713/1/82

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abstract = "We present 30 GHz measurements of the angular power spectrum of the cosmic microwave background (CMB) obtained with the Sunyaev-Zel'dovich Array. The measurements are sensitive to arcminute angular scales, where secondary anisotropy from the Sunyaev-Zel'dovich effect (SZE) is expected to dominate. For a broad bin centered at multipole 4066, we find 67+77 -50 μK2; of which 26 ± 5 μK2 is the expected contribution from primary CMB anisotropy and 80 ± 54 μK2 is the expected contribution from undetected radio sources. These results imply an upper limit of 155 μK2 (95% CL) on the secondary contribution to the anisotropy in our maps. This level of SZE anisotropy power is consistent with expectations based on recent determinations of the normalization of the matter power spectrum, i.e., σ ∼ 8 0.8.",

keywords = "Cosmic background radiation, Cosmological parameters, Cosmology: observations, Large-scale structure of universe, Techniques: interferometric",

author = "Sharp, {Matthew K.} and Marrone, {Daniel P.} and Carlstrom, {John E.} and Thomas Culverhouse and Christopher Greer and David Hawkins and Ryan Hennessy and Marshall Joy and Lamb, {James W.} and Leitch, {Erik M.} and Michael Loh and Amber Miller and Tony Mroczkowski and Stephen Muchovej and Clem Pryke and David Woody",

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AU - Sharp, Matthew K.

AU - Marrone, Daniel P.

AU - Carlstrom, John E.

AU - Culverhouse, Thomas

AU - Greer, Christopher

AU - Hawkins, David

AU - Hennessy, Ryan

AU - Joy, Marshall

AU - Lamb, James W.

AU - Leitch, Erik M.

AU - Loh, Michael

AU - Miller, Amber

AU - Mroczkowski, Tony

AU - Muchovej, Stephen

AU - Pryke, Clem

AU - Woody, David

PY - 2010

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AB - We present 30 GHz measurements of the angular power spectrum of the cosmic microwave background (CMB) obtained with the Sunyaev-Zel'dovich Array. The measurements are sensitive to arcminute angular scales, where secondary anisotropy from the Sunyaev-Zel'dovich effect (SZE) is expected to dominate. For a broad bin centered at multipole 4066, we find 67+77 -50 μK2; of which 26 ± 5 μK2 is the expected contribution from primary CMB anisotropy and 80 ± 54 μK2 is the expected contribution from undetected radio sources. These results imply an upper limit of 155 μK2 (95% CL) on the secondary contribution to the anisotropy in our maps. This level of SZE anisotropy power is consistent with expectations based on recent determinations of the normalization of the matter power spectrum, i.e., σ ∼ 8 0.8.

KW - Cosmic background radiation

KW - Cosmological parameters

KW - Cosmology: observations

KW - Large-scale structure of universe

KW - Techniques: interferometric

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A measurement of arcminute anisotropy in the cosmic microwave background with the sunyaev-zel'dovich array

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