Measurements of E-mode polarization and temperature-E-mode correlation in the cosmic microwave background from 100 square degrees of SPTPOL data
- Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics; California Inst. of Technology (CalTech), Pasadena, CA (United States)
- Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics; Univ. of Colorado, Boulder, CO (United States)
- Cardiff Univ. (United Kingdom)
- Univ. of Chicago, IL (United States)
- Univ. of Colorado, Boulder, CO (United States)
- NIST Quantum Devices Group, Boulder, CO (United States)
- McGill Univ., Montreal, QC (Canada); Argonne National Lab. (ANL), Argonne, IL (United States)
- Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics; Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics; Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Chicago, IL (United States)
- Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics and Enrico Fermi Inst.; Argonne National Lab. (ANL), Argonne, IL (United States)
- Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics; Argonne National Lab. (ANL), Argonne, IL (United States)
- Univ. of KwaZulu-Natal, Durban (South Africa)
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics
- McGill Univ., Montreal, QC (Canada)
- McGill Univ., Montreal, QC (Canada); Canadian Inst. for Advanced Research, Toronto, ON (Canada)
- Univ. of California, Berkeley, CA (United States)
- SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States)
- Stanford Univ., CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology
- Univ. of California, Davis, CA (United States)
- Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- NIST Quantum Devices Group, Boulder, CO (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Univ. of Michigan, Ann Arbor, MI (United States)
- Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics; Univ. of Chicago, IL (United States). Enrico Fermi Inst.
- Case Western Reserve Univ., Cleveland, OH (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Univ. of Minnesota, Minneapolis, MN (United States)
- Univ. of California, Berkeley, CA (United States); Univ. of Melbourne (Australia)
- Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics and Enrico Fermi Inst.; School of the Art Inst. of Chicago, IL (United States)
- McGill Univ., Montreal, QC (Canada); Three-Speed Logic, Inc., Vancouver, BC (Canada)
- Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
- Univ. of Toronto, ON (Canada)
- California Inst. of Technology (CalTech), Pasadena, CA (United States); Univ. of Illinois, Urbana-Champaign, IL (United States)
Here, 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 $$150\,$GHz. We also report the $$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$$ (small-scale) regime. We fit the combination of the SPTpol power spectra, data from \planck\, and previous SPT measurements with a six-parameter \LCDM cosmological model. Furthermore, we find that the best-fit parameters are consistent with previous results. The improvement in high-$$\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.$$
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- AC02-76SF00515; AC02-07CH11359; AC02-06CH11357
- OSTI ID:
- 1336377
- Report Number(s):
- SLAC-PUB-16761
- Journal Information:
- The Astrophysical Journal (Online), Vol. 805, Issue 1; ISSN 1538-4357
- Publisher:
- Institute of Physics (IOP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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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