Improved constraint on primordial gravitational waves with delensing ...
Inflation generically predicts a background of primordial gravitational waves, which generate a primordial B-mode component in the polarization of the cosmic microwave background (CMB). The measurement of such a B-mode signature would lend significant support to the paradigm of inflation. Observed B...
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Online Access: | https://dx.doi.org/10.48660/21050016 https://pirsa.org/21050016 |
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ftdatacite:10.48660/21050016 2024-03-31T07:55:23+00:00 Improved constraint on primordial gravitational waves with delensing ... 2021 video/mp4 https://dx.doi.org/10.48660/21050016 https://pirsa.org/21050016 en eng Perimeter Institute Cosmology Audiovisual Video Recording article MediaObject 2021 ftdatacite https://doi.org/10.48660/21050016 2024-03-04T13:30:48Z Inflation generically predicts a background of primordial gravitational waves, which generate a primordial B-mode component in the polarization of the cosmic microwave background (CMB). The measurement of such a B-mode signature would lend significant support to the paradigm of inflation. Observed B modes also contain a component from the gravitational lensing of primordial E modes, which can obscure the measurement of the primordial B modes. We reduce the sample variance in the BB spectrum contributed from this lensing component by a process called 'delensing.' In this talk, I will show results from the first demonstration in an improved constraint on primordial gravitational waves with delensing using data from BICEP/Keck, the South Pole Telescope (SPT), and Planck. In addition, I will provide an outlook of joint-analysis efforts of the BICEP/Keck and the SPT collaborations (the South Pole Observatory) to constrain primordial gravitational waves. ... Article in Journal/Newspaper South pole DataCite Metadata Store (German National Library of Science and Technology) South Pole |
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DataCite Metadata Store (German National Library of Science and Technology) |
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ftdatacite |
language |
English |
topic |
Cosmology |
spellingShingle |
Cosmology Improved constraint on primordial gravitational waves with delensing ... |
topic_facet |
Cosmology |
description |
Inflation generically predicts a background of primordial gravitational waves, which generate a primordial B-mode component in the polarization of the cosmic microwave background (CMB). The measurement of such a B-mode signature would lend significant support to the paradigm of inflation. Observed B modes also contain a component from the gravitational lensing of primordial E modes, which can obscure the measurement of the primordial B modes. We reduce the sample variance in the BB spectrum contributed from this lensing component by a process called 'delensing.' In this talk, I will show results from the first demonstration in an improved constraint on primordial gravitational waves with delensing using data from BICEP/Keck, the South Pole Telescope (SPT), and Planck. In addition, I will provide an outlook of joint-analysis efforts of the BICEP/Keck and the SPT collaborations (the South Pole Observatory) to constrain primordial gravitational waves. ... |
format |
Article in Journal/Newspaper |
title |
Improved constraint on primordial gravitational waves with delensing ... |
title_short |
Improved constraint on primordial gravitational waves with delensing ... |
title_full |
Improved constraint on primordial gravitational waves with delensing ... |
title_fullStr |
Improved constraint on primordial gravitational waves with delensing ... |
title_full_unstemmed |
Improved constraint on primordial gravitational waves with delensing ... |
title_sort |
improved constraint on primordial gravitational waves with delensing ... |
publisher |
Perimeter Institute |
publishDate |
2021 |
url |
https://dx.doi.org/10.48660/21050016 https://pirsa.org/21050016 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_doi |
https://doi.org/10.48660/21050016 |
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1795037203271778304 |