Preprint typeset using LATEX style emulateapj v. 8/13/10 IMPROVED CONSTRAINTS ON COSMIC MICROWAVE BACKGROUND SECONDARY ANISOTROPIES
We report measurements of the cosmic microwave background (CMB) power spectrum from the complete 2008 South Pole Telescope (SPT) data set. We analyze twice as much data as the first SPT power spectrum analysis, using an improved cosmological parameter estimator which fits multi-frequency models to t...
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| Format: | Text |
| Language: | English |
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2011
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.759.5873 http://arxiv.org/pdf/1012.4788.pdf |
| Summary: | We report measurements of the cosmic microwave background (CMB) power spectrum from the complete 2008 South Pole Telescope (SPT) data set. We analyze twice as much data as the first SPT power spectrum analysis, using an improved cosmological parameter estimator which fits multi-frequency models to the SPT 150 and 220 GHz bandpowers. We find an excellent fit to the measured bandpowers with a model that includes lensed primary CMB anisotropy, secondary thermal (tSZ) and kinetic (kSZ) Sunyaev-Zel’dovich anisotropies, unclustered synchrotron point sources, and clustered dusty point sources. In addition to measuring the power spectrum of dusty galaxies at high signal-to-noise, the data primarily constrain a linear combination of the kSZ and tSZ anisotropy contributions at 150 GHz and ` = 3000: DtSZ3000 + 0.5D kSZ 3000 = 4.5 ± 1.0µK2. The 95 % confidence upper limits on secondary anisotropy power are DtSZ3000 < 5.3µK 2 and DkSZ3000 < 6.5µK 2. We also consider the potential |
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