Measurements of b -mode polarization of the cosmic microwave background from 500 square degrees of sptpol data
We report a B-mode power spectrum measurement from the cosmic microwave background (CMB) polarization anisotropy observations made using the SPTpol instrument on the South Pole Telescope. This work uses 500 deg2 of SPTpol data, a five-fold increase over the last SPTpol B-mode release. As a result, t...
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2020
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ftcdlib:oai:escholarship.org/ark:/13030/qt5003210g 2023-05-15T18:22:52+02:00 Measurements of b -mode polarization of the cosmic microwave background from 500 square degrees of sptpol data Sayre, JT Reichardt, CL Henning, JW Ade, PAR Anderson, AJ Austermann, JE Avva, JS Beall, JA Bender, AN Benson, BA Bianchini, F Bleem, LE Carlstrom, JE Chang, CL Chaubal, P Chiang, HC Citron, R Corbett Moran, C Crawford, TM Crites, AT De Haan, T Dobbs, MA Everett, W Gallicchio, J George, EM Gilbert, A Gupta, N Halverson, NW Harrington, N Hilton, GC Holder, GP Holzapfel, WL Hrubes, JD Huang, N Hubmayr, J Irwin, KD Knox, L Lee, AT Li, D Lowitz, A Mcmahon, JJ Meyer, SS Mocanu, LM Montgomery, J Nadolski, A Natoli, T Nibarger, JP Noble, G Novosad, V Padin, S Patil, S Pryke, C Ruhl, JE Saliwanchik, BR Schaffer, KK Sievers, C Smecher, G Stark, AA Tucker, C Vanderlinde, K Veach, T Vieira, JD Wang, G Whitehorn, N Wu, WLK Yefremenko, V 122003 2020-06-15 application/pdf https://escholarship.org/uc/item/5003210g unknown eScholarship, University of California qt5003210g https://escholarship.org/uc/item/5003210g public Physical Review D, vol 101, iss 12 astro-ph.CO article 2020 ftcdlib 2021-04-16T07:11:22Z We report a B-mode power spectrum measurement from the cosmic microwave background (CMB) polarization anisotropy observations made using the SPTpol instrument on the South Pole Telescope. This work uses 500 deg2 of SPTpol data, a five-fold increase over the last SPTpol B-mode release. As a result, the bandpower uncertainties have been reduced by more than a factor of two, and the measurement extends to lower multipoles: 52< <2301. Data from both 95 and 150 GHz are used, allowing for three cross-spectra: 95 GHz × 95 GHz, 95 GHz × 150 GHz, and 150 GHz × 150 GHz. B-mode power is detected at very high significance; we find P(BB<0)=5.8×10-71, corresponding to a 18.1σ detection of power. With a prior on the galactic dust from Planck, WMAP and BICEP2/Keck observations, the SPTpol B-mode data can be used to set an upper limit on the tensor-to-scalar ratio, r<0.44 at 95% confidence (the expected 1σ constraint on r given the measurement uncertainties is 0.22). We find the measured B-mode power is consistent with the Planck best-fit ΛCDM model predictions. Scaling the predicted lensing B-mode power in this model by a factor Alens, the data prefer Alens=1.17±0.13. These data are currently the most precise measurements of B-mode power at >320. Article in Journal/Newspaper South pole University of California: eScholarship South Pole |
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Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
astro-ph.CO |
spellingShingle |
astro-ph.CO Sayre, JT Reichardt, CL Henning, JW Ade, PAR Anderson, AJ Austermann, JE Avva, JS Beall, JA Bender, AN Benson, BA Bianchini, F Bleem, LE Carlstrom, JE Chang, CL Chaubal, P Chiang, HC Citron, R Corbett Moran, C Crawford, TM Crites, AT De Haan, T Dobbs, MA Everett, W Gallicchio, J George, EM Gilbert, A Gupta, N Halverson, NW Harrington, N Hilton, GC Holder, GP Holzapfel, WL Hrubes, JD Huang, N Hubmayr, J Irwin, KD Knox, L Lee, AT Li, D Lowitz, A Mcmahon, JJ Meyer, SS Mocanu, LM Montgomery, J Nadolski, A Natoli, T Nibarger, JP Noble, G Novosad, V Padin, S Patil, S Pryke, C Ruhl, JE Saliwanchik, BR Schaffer, KK Sievers, C Smecher, G Stark, AA Tucker, C Vanderlinde, K Veach, T Vieira, JD Wang, G Whitehorn, N Wu, WLK Yefremenko, V Measurements of b -mode polarization of the cosmic microwave background from 500 square degrees of sptpol data |
topic_facet |
astro-ph.CO |
description |
We report a B-mode power spectrum measurement from the cosmic microwave background (CMB) polarization anisotropy observations made using the SPTpol instrument on the South Pole Telescope. This work uses 500 deg2 of SPTpol data, a five-fold increase over the last SPTpol B-mode release. As a result, the bandpower uncertainties have been reduced by more than a factor of two, and the measurement extends to lower multipoles: 52< <2301. Data from both 95 and 150 GHz are used, allowing for three cross-spectra: 95 GHz × 95 GHz, 95 GHz × 150 GHz, and 150 GHz × 150 GHz. B-mode power is detected at very high significance; we find P(BB<0)=5.8×10-71, corresponding to a 18.1σ detection of power. With a prior on the galactic dust from Planck, WMAP and BICEP2/Keck observations, the SPTpol B-mode data can be used to set an upper limit on the tensor-to-scalar ratio, r<0.44 at 95% confidence (the expected 1σ constraint on r given the measurement uncertainties is 0.22). We find the measured B-mode power is consistent with the Planck best-fit ΛCDM model predictions. Scaling the predicted lensing B-mode power in this model by a factor Alens, the data prefer Alens=1.17±0.13. These data are currently the most precise measurements of B-mode power at >320. |
format |
Article in Journal/Newspaper |
author |
Sayre, JT Reichardt, CL Henning, JW Ade, PAR Anderson, AJ Austermann, JE Avva, JS Beall, JA Bender, AN Benson, BA Bianchini, F Bleem, LE Carlstrom, JE Chang, CL Chaubal, P Chiang, HC Citron, R Corbett Moran, C Crawford, TM Crites, AT De Haan, T Dobbs, MA Everett, W Gallicchio, J George, EM Gilbert, A Gupta, N Halverson, NW Harrington, N Hilton, GC Holder, GP Holzapfel, WL Hrubes, JD Huang, N Hubmayr, J Irwin, KD Knox, L Lee, AT Li, D Lowitz, A Mcmahon, JJ Meyer, SS Mocanu, LM Montgomery, J Nadolski, A Natoli, T Nibarger, JP Noble, G Novosad, V Padin, S Patil, S Pryke, C Ruhl, JE Saliwanchik, BR Schaffer, KK Sievers, C Smecher, G Stark, AA Tucker, C Vanderlinde, K Veach, T Vieira, JD Wang, G Whitehorn, N Wu, WLK Yefremenko, V |
author_facet |
Sayre, JT Reichardt, CL Henning, JW Ade, PAR Anderson, AJ Austermann, JE Avva, JS Beall, JA Bender, AN Benson, BA Bianchini, F Bleem, LE Carlstrom, JE Chang, CL Chaubal, P Chiang, HC Citron, R Corbett Moran, C Crawford, TM Crites, AT De Haan, T Dobbs, MA Everett, W Gallicchio, J George, EM Gilbert, A Gupta, N Halverson, NW Harrington, N Hilton, GC Holder, GP Holzapfel, WL Hrubes, JD Huang, N Hubmayr, J Irwin, KD Knox, L Lee, AT Li, D Lowitz, A Mcmahon, JJ Meyer, SS Mocanu, LM Montgomery, J Nadolski, A Natoli, T Nibarger, JP Noble, G Novosad, V Padin, S Patil, S Pryke, C Ruhl, JE Saliwanchik, BR Schaffer, KK Sievers, C Smecher, G Stark, AA Tucker, C Vanderlinde, K Veach, T Vieira, JD Wang, G Whitehorn, N Wu, WLK Yefremenko, V |
author_sort |
Sayre, JT |
title |
Measurements of b -mode polarization of the cosmic microwave background from 500 square degrees of sptpol data |
title_short |
Measurements of b -mode polarization of the cosmic microwave background from 500 square degrees of sptpol data |
title_full |
Measurements of b -mode polarization of the cosmic microwave background from 500 square degrees of sptpol data |
title_fullStr |
Measurements of b -mode polarization of the cosmic microwave background from 500 square degrees of sptpol data |
title_full_unstemmed |
Measurements of b -mode polarization of the cosmic microwave background from 500 square degrees of sptpol data |
title_sort |
measurements of b -mode polarization of the cosmic microwave background from 500 square degrees of sptpol data |
publisher |
eScholarship, University of California |
publishDate |
2020 |
url |
https://escholarship.org/uc/item/5003210g |
op_coverage |
122003 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
Physical Review D, vol 101, iss 12 |
op_relation |
qt5003210g https://escholarship.org/uc/item/5003210g |
op_rights |
public |
_version_ |
1766202278761463808 |