Measurements of E-Mode Polarization and Temperature-E-Mode Correlation in the Cosmic Microwave Background from 100 Square Degrees of SPTpol Data
Measurements of E-Mode Polarization and Temperature-E-Mode Correlation in the Cosmic Microwave Background from 100 Square Degrees of SPTpol Data
We present measurements of $E$-mode polarization and temperature-$E$-mode correlation in the cosmic microwave background (CMB) using data from the first season of observations with SPTpol, the polarization-sensitive receiver currently installed on the South Pole Telescope (SPT). The observations used in this work cover 100~\sqdeg\ of sky with arcminute resolution at $150\,$GHz. We report the $E$-mode angular auto-power spectrum ($EE$) and the temperature-$E$-mode angular cross-power spectrum ($TE$) over the multipole range $500 < \ell \leq5000$. These power spectra improve on previous measurements in the high-$\ell$ (small-scale) regime. We fit the combination of the SPTpol power spectra, data from \planck\, and previous SPT measurements with a six-parameter \LCDM cosmological model. We find that the best-fit parameters are consistent with previous results. The improvement in high-$\ell$ sensitivity over previous measurements leads to a significant improvement in the limit on polarized point-source power: after masking sources brighter than 50\,mJy in unpolarized flux at 150\,GHz, we find a 95\% confidence upper limit on unclustered point-source power in the $EE$ spectrum of $D_\ell = \ell (\ell+1) C_\ell / 2 \pi < 0.40 \ \mu{\mbox{K}}^2$ at $\ell=3000$, indicating that future $EE$ measurements will not be limited by power from unclustered point sources in the multipole range $\ell < 3600$, and possibly much higher in $\ell.$
N. W. Halverson、A. T. Crites、J. D. Vieira、J. E. Ruhl、J. W. Henning、B. A. Benson、K. Vanderlinde、A. Gilbert、C. Liang、R. Citron、G. Smecher、P. A. R. Ade、N. Harrington、K. K. Schaffer、J. Hubmayr、A. A. Stark、R. Keisler、O. Zahn、G. C. Hilton、J. D. Hrubes、L. Mocanu、V. Novosad、T. E. Montroy、B. R. Saliwanchik、C. L. Chang、E. M. Leitch、V. Yefremenko、C. L. Reichardt、H. C. Chiang、C. Pryke、W. L. Holzapfel、W. Everett、C. Tucker、J Gallicchio、D. Li、A. T. Lee、T. M. Crawford、J. E. Austermann、H-M. Cho、J. J. McMahon、J. E. Carstrom、J. Gao、L. E. Bleem、T. De Haan、G. Wang、K. T. Story、S. Padin、K. D. Irwin、T. Natoli、S. S. Meyer、E. M. George、J. Mehl、N. Huang、D. Luong-Van、D. Hanson、Z. Hou、G. P. Holder、L. Knox、J. T. Sayre、J. A. Beall、J. P. Nibarger、A. N. Bender、M. A. Dobbs、S. Hoover、K. A. Aird、N. Whitehorn
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N. W. Halverson,A. T. Crites,J. D. Vieira,J. E. Ruhl,J. W. Henning,B. A. Benson,K. Vanderlinde,A. Gilbert,C. Liang,R. Citron,G. Smecher,P. A. R. Ade,N. Harrington,K. K. Schaffer,J. Hubmayr,A. A. Stark,R. Keisler,O. Zahn,G. C. Hilton,J. D. Hrubes,L. Mocanu,V. Novosad,T. E. Montroy,B. R. Saliwanchik,C. L. Chang,E. M. Leitch,V. Yefremenko,C. L. Reichardt,H. C. Chiang,C. Pryke,W. L. Holzapfel,W. Everett,C. Tucker,J Gallicchio,D. Li,A. T. Lee,T. M. Crawford,J. E. Austermann,H-M. Cho,J. J. McMahon,J. E. Carstrom,J. Gao,L. E. Bleem,T. De Haan,G. Wang,K. T. Story,S. Padin,K. D. Irwin,T. Natoli,S. S. Meyer,E. M. George,J. Mehl,N. Huang,D. Luong-Van,D. Hanson,Z. Hou,G. P. Holder,L. Knox,J. T. Sayre,J. A. Beall,J. P. Nibarger,A. N. Bender,M. A. Dobbs,S. Hoover,K. A. Aird,N. Whitehorn.Measurements of E-Mode Polarization and Temperature-E-Mode Correlation in the Cosmic Microwave Background from 100 Square Degrees of SPTpol Data[EB/OL].(2014-11-04)[2025-07-02].https://arxiv.org/abs/1411.1042.点此复制
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