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Title: Measurements of the Temperature and E-mode Polarization of the CMB from 500 Square Degrees of SPTpol Data

Abstract

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 now report the $EE$ and $TE$ power spectra over the spherical harmonic multipole range $$50 < \ell \leq 8000$$, and detect the first nine acoustic peaks in the $EE$ spectrum with high signal-to-noise. These measurements are the most sensitive to date of the $EE$ and $TE$ angular polarization power spectra at $$\ell > 1050$$ and $$\ell > 1475$$, respectively. The observations cover $$500\, \rm{deg}^2$$ of sky, a fivefold increase in area compared to previous SPTpol power spectrum releases, leading to more than a factor of two reduction in bandpower uncertainties. The additional sky coverage increases our sensitivity to the photon-diffusion damping tail of the CMB angular power spectra, which enables tighter constraints on $$\Lambda CDM$$ model extensions such as primordial helium content $$Y_\rm{p}$$ and effective number of relativistic species $$N_\rm{eff}$$. Furthermore, after masking all sources with unpolarized flux $>50$ mJy we place a 95% confidence upper limit on residual polarized point-source power of $$D_\ell < 0.10 \mu{\rm K}^2$$ at $$\ell=3000$$. This limit is a factor of four lower than the previous best upper limit, and suggests that the $EE$ damping tail is brighter than foregrounds to at least $$\ell = 4100$$ with modest source masking. Finally, we find cosmological parameter constraints consistent with those for $Planck$ temperature when fitting SPTpol data at $$\ell < 1000$$. However, including SPTpol data at $$\ell > 1000$$ results in a preference for a higher value of the expansion rate ($$H_0 = 71.2 \pm 2.1\,\mbox{km}\,s^{-1}\mbox{Mpc}^{-1}$$) and a lower value for present-day density fluctuations ($$\sigma_8 = 0.77 \pm 0.02$$). (Abridged).

Authors:
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Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE; 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
Contributing Org.:
SPT
OSTI Identifier:
1419984
Alternate Identifier(s):
OSTI ID: 1375726; OSTI ID: 1436172
Report Number(s):
FERMILAB-PUB-17-297-AE; arXiv:1707.09353
Journal ID: ISSN 1538-4357; 1613500
Grant/Contract Number:
AC02-76SF00515; AC02-07CH11359; AC02-06CH11357; AC02-05CH11231; PLR-1248097; PHY-0114422; GBMF#947; AST-1402161; FT150100074; AST-0956135
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
The Astrophysical Journal (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal (Online); Journal Volume: 852; Journal Issue: 2; Journal ID: ISSN 1538-4357
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; cosmic background radiation; cosmological parameters; cosmology: observations; polarization

Citation Formats

Henning, J. W., Sayre, J. T., Reichardt, C. L., Ade, P. A. R., Anderson, A. J., Austermann, J. E., Beall, J. A., Bender, A. N., Benson, B. A., Bleem, L. E., Carlstrom, J. E., Chang, C. L., Chiang, H. C., Cho, H-M., 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., Halverson, N. W., Harrington, N., Hilton, G. C., Holder, G. P., Holzapfel, W. L., Hoover, S., Hou, Z., Hrubes, J. D., Huang, N., Hubmayr, J., Irwin, K. D., Keisler, R., Knox, L., Lee, A. T., Leitch, E. M., Li, D., Lowitz, A., Manzotti, A., McMahon, J. J., Meyer, S. S., Mocanu, L., Montgomery, J., Nadolski, A., Natoli, T., Nibarger, J. P., Novosad, V., Padin, S., Pryke, C., Ruhl, J. E., Saliwanchik, B. R., Schaffer, K. K., Sievers, C., Smecher, G., Stark, A. A., Story, K. T., Tucker, C., Vanderlinde, K., Veach, T., Vieira, J. D., Wang, G., Whitehorn, N., Wu, W. L. K., and Yefremenko, V. Measurements of the Temperature and E-mode Polarization of the CMB from 500 Square Degrees of SPTpol Data. United States: N. p., 2018. Web. doi:10.3847/1538-4357/aa9ff4.
Henning, J. W., Sayre, J. T., Reichardt, C. L., Ade, P. A. R., Anderson, A. J., Austermann, J. E., Beall, J. A., Bender, A. N., Benson, B. A., Bleem, L. E., Carlstrom, J. E., Chang, C. L., Chiang, H. C., Cho, H-M., 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., Halverson, N. W., Harrington, N., Hilton, G. C., Holder, G. P., Holzapfel, W. L., Hoover, S., Hou, Z., Hrubes, J. D., Huang, N., Hubmayr, J., Irwin, K. D., Keisler, R., Knox, L., Lee, A. T., Leitch, E. M., Li, D., Lowitz, A., Manzotti, A., McMahon, J. J., Meyer, S. S., Mocanu, L., Montgomery, J., Nadolski, A., Natoli, T., Nibarger, J. P., Novosad, V., Padin, S., Pryke, C., Ruhl, J. E., Saliwanchik, B. R., Schaffer, K. K., Sievers, C., Smecher, G., Stark, A. A., Story, K. T., Tucker, C., Vanderlinde, K., Veach, T., Vieira, J. D., Wang, G., Whitehorn, N., Wu, W. L. K., & Yefremenko, V. Measurements of the Temperature and E-mode Polarization of the CMB from 500 Square Degrees of SPTpol Data. United States. doi:10.3847/1538-4357/aa9ff4.
Henning, J. W., Sayre, J. T., Reichardt, C. L., Ade, P. A. R., Anderson, A. J., Austermann, J. E., Beall, J. A., Bender, A. N., Benson, B. A., Bleem, L. E., Carlstrom, J. E., Chang, C. L., Chiang, H. C., Cho, H-M., 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., Halverson, N. W., Harrington, N., Hilton, G. C., Holder, G. P., Holzapfel, W. L., Hoover, S., Hou, Z., Hrubes, J. D., Huang, N., Hubmayr, J., Irwin, K. D., Keisler, R., Knox, L., Lee, A. T., Leitch, E. M., Li, D., Lowitz, A., Manzotti, A., McMahon, J. J., Meyer, S. S., Mocanu, L., Montgomery, J., Nadolski, A., Natoli, T., Nibarger, J. P., Novosad, V., Padin, S., Pryke, C., Ruhl, J. E., Saliwanchik, B. R., Schaffer, K. K., Sievers, C., Smecher, G., Stark, A. A., Story, K. T., Tucker, C., Vanderlinde, K., Veach, T., Vieira, J. D., Wang, G., Whitehorn, N., Wu, W. L. K., and Yefremenko, V. Thu . "Measurements of the Temperature and E-mode Polarization of the CMB from 500 Square Degrees of SPTpol Data". United States. doi:10.3847/1538-4357/aa9ff4.
@article{osti_1419984,
title = {Measurements of the Temperature and E-mode Polarization of the CMB from 500 Square Degrees of SPTpol Data},
author = {Henning, J. W. and Sayre, J. T. and Reichardt, C. L. and Ade, P. A. R. and Anderson, A. J. and Austermann, J. E. and Beall, J. A. and Bender, A. N. and Benson, B. A. and Bleem, L. E. and Carlstrom, J. E. and Chang, C. L. and Chiang, H. C. and Cho, H-M. and Citron, R. and Moran, C. Corbett and Crawford, T. M. and Crites, A. T. and Haan, T. de and Dobbs, M. A. and Everett, W. and Gallicchio, J. and George, E. M. and Gilbert, A. and Halverson, N. W. and Harrington, N. and Hilton, G. C. and Holder, G. P. and Holzapfel, W. L. and Hoover, S. and Hou, Z. and Hrubes, J. D. and Huang, N. and Hubmayr, J. and Irwin, K. D. and Keisler, R. and Knox, L. and Lee, A. T. and Leitch, E. M. and Li, D. and Lowitz, A. and Manzotti, A. and McMahon, J. J. and Meyer, S. S. and Mocanu, L. and Montgomery, J. and Nadolski, A. and Natoli, T. and Nibarger, J. P. and Novosad, V. and Padin, S. and Pryke, C. and Ruhl, J. E. and Saliwanchik, B. R. and Schaffer, K. K. and Sievers, C. and Smecher, G. and Stark, A. A. and Story, K. T. and Tucker, C. and Vanderlinde, K. and Veach, T. and Vieira, J. D. and Wang, G. and Whitehorn, N. and Wu, W. L. K. and Yefremenko, V.},
abstractNote = {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 now report the $EE$ and $TE$ power spectra over the spherical harmonic multipole range $50 < \ell \leq 8000$, and detect the first nine acoustic peaks in the $EE$ spectrum with high signal-to-noise. These measurements are the most sensitive to date of the $EE$ and $TE$ angular polarization power spectra at $\ell > 1050$ and $\ell > 1475$, respectively. The observations cover $500\, \rm{deg}^2$ of sky, a fivefold increase in area compared to previous SPTpol power spectrum releases, leading to more than a factor of two reduction in bandpower uncertainties. The additional sky coverage increases our sensitivity to the photon-diffusion damping tail of the CMB angular power spectra, which enables tighter constraints on $\Lambda CDM$ model extensions such as primordial helium content $Y_\rm{p}$ and effective number of relativistic species $N_\rm{eff}$. Furthermore, after masking all sources with unpolarized flux $>50$ mJy we place a 95% confidence upper limit on residual polarized point-source power of $D_\ell < 0.10 \mu{\rm K}^2$ at $\ell=3000$. This limit is a factor of four lower than the previous best upper limit, and suggests that the $EE$ damping tail is brighter than foregrounds to at least $\ell = 4100$ with modest source masking. Finally, we find cosmological parameter constraints consistent with those for $Planck$ temperature when fitting SPTpol data at $\ell < 1000$. However, including SPTpol data at $\ell > 1000$ results in a preference for a higher value of the expansion rate ($H_0 = 71.2 \pm 2.1\,\mbox{km}\,s^{-1}\mbox{Mpc}^{-1}$) and a lower value for present-day density fluctuations ($\sigma_8 = 0.77 \pm 0.02$). (Abridged).},
doi = {10.3847/1538-4357/aa9ff4},
journal = {The Astrophysical Journal (Online)},
number = 2,
volume = 852,
place = {United States},
year = {Thu Jan 11 00:00:00 EST 2018},
month = {Thu Jan 11 00:00:00 EST 2018}
}

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