Measurements of the Temperature and E-mode Polarization of the CMB from 500 Square Degrees of SPTpol Data
- Univ. of Chicago, Chicago, IL (United States)
- Univ. of Colorado, Boulder, CO (United States)
- Univ. of Melbourne, Parkville, VIC (Australia)
- Cardiff Univ. (United Kingdom)
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- NIST Quantum Sensors Group, Boulder, CO (United States)
- Univ. of Chicago, Chicago, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
- Univ. of Chicago, Chicago, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Univ. of KwaZulu-Natal, Durban (South Africa)
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- California Inst. of Technology (CalTech), Pasadena, CA (United States)
- Univ. of Chicago, Chicago, IL (United States); California Inst. of Technology (CalTech), Pasadena, CA (United States)
- Univ. of California, Berkeley, CA (United States)
- McGill Univ., Montreal, QC (Canada); Canadian Institute for Advanced Research, Toronto, ON (Canada)
- Univ. of Chicago, Chicago, IL (United States); Harvey Mudd College, Claremont, CA (United States)
- Univ. of California, Berkeley, CA (United States); European Southern Observatory, Garching (Germany)
- McGill Univ., Montreal, QC (Canada)
- Canadian Institute for Advanced Research, Toronto, ON (Canada); Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States)
- SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., Stanford, CA (United States)
- Stanford Univ., Stanford, CA (United States)
- 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 Sensors Group, Boulder, CO (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Univ. of Michigan, Ann Arbor, MI (United States)
- Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States)
- Univ. of Toronto, Toronto, ON (Canada)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Univ. of Minnesota, Minneapolis, MN (United States)
- Case Western Reserve Univ., Cleveland, OH (United States)
- Univ. of Chicago, Chicago, IL (United States); School of the Art Institute of Chicago, 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 Maryland, College Park, MD (United States)
- Univ. of California, Berkeley, CA (United States); Univ. of California, Los Angeles, CA (United States)
We present measurements of the E-mode polarization angular auto-power spectrum (EE) and temperature–E-mode cross-power spectrum (TE) of the cosmic microwave background (CMB) using 150 GHz data from three seasons of SPTpol observations. We report the power spectra over the spherical harmonic multipole range and detect nine acoustic peaks in the EE spectrum with high signal-to-noise ratio. These measurements are the most sensitive to date of the EE and TE power spectra at and , respectively. The observations cover 500 , a fivefold increase in area compared to previous SPTpol analyses, which increases our sensitivity to the photon diffusion damping tail of the CMB power spectra enabling tighter constraints on ΛCDM model extensions. After masking all sources with unpolarized flux mJy, we place a 95% confidence upper limit on residual polarized point-source power of at , suggesting that the EE damping tail dominates foregrounds to at least with modest source masking. We find that the SPTpol data set is in mild tension with the ΛCDM model (), and different data splits prefer parameter values that differ at the level. When fitting SPTpol data at , we find cosmological parameter constraints consistent with those for Planck temperature. Including SPTpol data at results in a preference for a higher value of the expansion rate ( ) and a lower value for present-day density fluctuations ().
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of Illinois at Urbana-Champaign, IL (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); Univ. of Chicago, IL (United States); Australian Research Council (ARC); Science and Technologies Facilities Council (STFC) (United Kingdom); Natural Sciences and Engineering Research Council of Canada (NSERC); Canadian Institute for Advanced Research (CIFAR); Canada Research Chairs program; USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- SPT
- Grant/Contract Number:
- AC02-76SF00515; AC02-07CH11359; AC02-06CH11357; AC02-05CH11231; PLR-1248097; PHY-0114422; GBMF#947; AST-1402161; FT150100074; AST-0956135; SC0015640
- OSTI ID:
- 1419984
- Alternate ID(s):
- OSTI ID: 1375726; OSTI ID: 1436172; OSTI ID: 1594622
- Report Number(s):
- FERMILAB-PUB-17-297-AE; arXiv:1707.09353; TRN: US1801432
- Journal Information:
- The Astrophysical Journal (Online), Vol. 852, Issue 2; ISSN 1538-4357
- Publisher:
- Institute of Physics (IOP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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Related Subjects
cosmic background radiation
cosmological parameters
cosmology: observations
polarization
osmic background radiation: polarization | polarization: power spectrum | power spectrum: angular dependence | density: fluctuation | helium: primordial | cosmic background radiation: temperature | dark matter: density | sensitivity | cosmic background radiation: multipole | acoustic | satellite: Planck | flux