An Improved Measurement of the Secondary Cosmic Microwave Background Anisotropies from the SPT-SZ + SPTpol Surveys

Reichardt, C. L.; Patil, S.; Ade, P. R.; Anderson, A. J.; Austermann, J. E.; Avva, J. S.; Baxter, E.; Beall, J. A.; Bender, A. N.; Benson, B. A.; Bianchini, F.; Bleem, L. E.; Carlstrom, J. E.; Chang, C. L.; Chaubal, P.; Chiang, H. C.; Chou, T. L.; Citron, R.; Moran, C. Corbett; Crawford, T. M.; Crites, A. T.; Haan, T. de; Dobbs, M. A.; Everett, W.; Gallicchio, J.; George, E. M.; Gilbert, A.; Gupta, N.; Halverson, N. W.; Harrington, N.; Henning, J. W.; Hilton, G. C.; Holder, G. P.; Holzapfel, W. L.; Hrubes, J. D.; Huang, N.; Hubmayr, J.; Irwin, K. D.; Knox, L.; Lee, A. T.; Li, D.; Lowitz, A.; Luong-Van, D.; McMahon, J. J.; Mehl, J.; Meyer, S. S.; Millea, M.; Mocanu, L. M.; Mohr, J. J.; Montgomery, J.; Nadolski, A.; Natoli, T.; Nibarger, J. P.; Noble, G.; Novosad, V.; Omori, Y.; Padin, S.; Pryke, C.; Ruhl, J. E.; Saliwanchik, B. R.; Sayre, J. T.; Schaffer, K. K.; Shirokoff, E.; Sievers, C.; Smecher, G.; Spieler, H. G.; Staniszewski, Z.; Stark, A. A.; Tucker, C.; Vanderlinde, K.; Veach, T.; Vieira, J. D.; Wang, G.; Whitehorn, N.; Williamson, R.; Wu, W. K.; Yefremenko, V.

doi:10.3847/1538-4357/abd407

Title: An Improved Measurement of the Secondary Cosmic Microwave Background Anisotropies from the SPT-SZ + SPTpol Surveys

Journal Article · Wed Feb 24 00:00:00 EST 2021 · The Astrophysical Journal (Online)

DOI:https://doi.org/10.3847/1538-4357/abd407· OSTI ID:1778085

;

; Anderson, A. J.; Austermann, J. E.; Avva, J. S.;

; Beall, J. A.; Bender, A. N.;

;

; Carlstrom, J. E.; Chang, C. L.; Chaubal, P.; Chiang, H. C.; Chou, T. L.;

; Moran, C. Corbett;

We report new measurements of millimeter-wave power spectra in the angular multipole range 2000 <= l <= 11,000 (angular scales 5' greater than or similar to theta greater than or similar to 1'). By adding 95 and 150 GHz data from the low-noise 500 deg(2) SPTpol survey to the SPT-SZ three-frequency 2540 deg(2) survey, we substantially reduce the uncertainties in these bands. These power spectra include contributions from the primary cosmic microwave background, cosmic infrared background, radio galaxies, and thermal and kinematic Sunyaev-Zel'dovich (SZ) effects. The data favor a thermal SZ (tSZ) power at 143 GHz of D-3000(tSZ) = 3.42 +/- 0.54 mu K-2 and a kinematic SZ (kSZ) power of D-3000(kSZ)=3.0 +/- 1.0 mu K-2. This is the first measurement of kSZ power at >= 3 sigma. However, different assumptions about the CIB or SZ models can reduce the significance down to 2.4 sigma in the worst case. We study the implications of the measured kSZ power for the epoch of reionization under the Calabrese et al. model for the kSZ power spectrum and find the duration of reionization to be Delta Z(re) = 1.1(-0.7)(+1.6)(Delta Z(re) < 4.1 at 95% confidence), when combined with our previously published tSZ bispectrum measurement. The upper limit tightens to Delta Z(re) < 3.2 if the assumed homogeneous kSZ power is increased by 25% (similar to 0.5 mu K-2) and relaxes to Delta Z(re) < 5.2 if the homogeneous kSZ power is decreased by the same amount.

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Research Organization:: SLAC National Accelerator Lab., Menlo Park, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); Australian Research Council; USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Organization:: SPT Collaboration

Grant/Contract Number:: AC02-76SF00515; PLR-1248097; OPP-1852617; PHY-0114422; DP150103208; AC02-07CH11359; AC02-06CH11357; AC02-05CH11231

OSTI ID:: 1778085

Alternate ID(s):: OSTI ID: 1797775

Journal Information:: The Astrophysical Journal (Online), Vol. 908, Issue 2; ISSN 1538-4357

Publisher:: Institute of Physics (IOP)Copyright Statement

Country of Publication:: United States

Language:: English

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