Title: Internal Delensing of Cosmic Microwave Background Polarization $B$-Modes with the POLARBEAR Experiment

Abstract

Using only cosmic microwave background polarization data from the polarbear experiment, we measure B-mode polarization delensing on subdegree scales at more than 5σ significance. We achieve a 14% B-mode power variance reduction, the highest to date for internal delensing, and improve this result to 22% by applying for the first time an iterative maximum a posteriori delensing method. Our analysis demonstrates the capability of internal delensing as a means of improving constraints on inflationary models, paving the way for the optimal analysis of next-generation primordial B-mode experiments.

Authors:

Adachi, S. ;

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• Search DOE PAGES for ORCID "0000-0002-0400-7555"

Aguilar Faúndez, M. A. O. ;

• Search DOE PAGES for author "Aguilar Faúndez, M. A. O."
• Search DOE PAGES for ORCID "0000-0002-1571-663X"

Akiba, Y.; Ali, A. ;

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• Search DOE PAGES for ORCID "0000-0001-7941-9602"

Arnold, K.; Baccigalupi, C. ;

• Search DOE PAGES for author "Baccigalupi, C."
• Search DOE PAGES for ORCID "0000-0002-8211-1630"

Barron, D. ;

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• Search DOE PAGES for ORCID "0000-0002-1623-5651"

Beck, D. ;

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• Search DOE PAGES for ORCID "0000-0003-0848-2756"

Bianchini, F.; Borrill, J.; Carron, J. ;

• Search DOE PAGES for author "Carron, J."
• Search DOE PAGES for ORCID "0000-0002-5751-1392"

Cheung, K. ;

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• Search DOE PAGES for ORCID "0000-0002-7764-378X"

Chinone, Y. ;

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• Search DOE PAGES for ORCID "0000-0002-3266-857X"

Crowley, K. ;

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• Search DOE PAGES for ORCID "0000-0001-5068-1295"

El Bouhargani, H. ;

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• Search DOE PAGES for ORCID "0000-0001-5471-3434"

Elleflot, T. ;

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• Search DOE PAGES for ORCID "0000-0002-5166-5614"

Errard, J. ;

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• Search DOE PAGES for ORCID "0000-0002-1419-0031"

Fabbian, G. ;

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• Search DOE PAGES for ORCID "0000-0002-3255-4695"

Feng, C.; Fujino, T.

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• Search DOE PAGES for ORCID "0000-0002-1211-7850"

more »; Goeckner-Wald, N.; Hasegawa, M. ;

• Search DOE PAGES for author "Hasegawa, M."
• Search DOE PAGES for ORCID "0000-0003-1443-1082"

Hazumi, M.; Hill, C. A.; Howe, L.; Katayama, N.; Keating, B. ;

• Search DOE PAGES for author "Keating, B."
• Search DOE PAGES for ORCID "0000-0003-3118-5514"

Kikuchi, S.; Kusaka, A.; Lee, A. T.; Leon, D.; Linder, E. ;

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• Search DOE PAGES for ORCID "0000-0001-5536-9241"

Lowry, L. N.; Matsuda, F. ;

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• Search DOE PAGES for ORCID "0000-0003-0041-6447"

Matsumura, T.; Minami, Y. ;

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• Search DOE PAGES for ORCID "0000-0003-2176-8089"

Namikawa, T.; Navaroli, M.; Nishino, H. ;

• Search DOE PAGES for author "Nishino, H."
• Search DOE PAGES for ORCID "0000-0003-0738-3369"

Peloton, J. ;

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• Search DOE PAGES for ORCID "0000-0002-8560-4449"

Pham, A. T. P.; Poletti, D. ;

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• Search DOE PAGES for ORCID "0000-0001-9807-3758"

Puglisi, G. ;

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• Search DOE PAGES for ORCID "0000-0002-0689-4290"

Reichardt, C. L. ;

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• Search DOE PAGES for ORCID "0000-0003-2226-9169"

Segawa, Y.; Sherwin, B. D.; Silva-Feaver, M. ;

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• Search DOE PAGES for ORCID "0000-0001-7480-4341"

Siritanasak, P. ;

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• Search DOE PAGES for ORCID "0000-0001-6830-1537"

Stompor, R. ;

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• Search DOE PAGES for ORCID "0000-0002-9777-3813"

Tajima, O.; Takatori, S.; Tanabe, D.; Teply, G. P.; Vergès, C.

• Search DOE PAGES for author "Vergès, C."
• Search DOE PAGES for ORCID "0000-0002-3942-1609"

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Publication Date:

Wed Apr 01 00:00:00 EDT 2020

Research Org.:

SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Org.:

USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF); European Research Council (ERC); JSPS KAKENHI; Moore Foundation; Simons Foundation; Templeton Foundation

Contributing Org.:

POLARBEAR Collaboration

OSTI Identifier:

1616762

Alternate Identifier(s):

OSTI ID: 1607960; OSTI ID: 1616130

Grant/Contract Number:  

AC02-76SF00515; AST-0618398; AST-1212230; 77047; 616170; ST/P000525/1; 18K13558; 18H04347; 19H00674; JP26220709; JP15H05891; JP26800125; JP16K21744; JP18H05539; FT150100074; 4633; 034079; 58724; 1130777; 1171811; AC02-05CH11231

Resource Type:

Accepted Manuscript

Journal Name:

Physical Review Letters

Additional Journal Information:

Journal Volume: 124; Journal Issue: 13; Journal ID: ISSN 0031-9007

Publisher:

American Physical Society (APS)

Country of Publication:

United States

Language:

English

Subject:

79 ASTRONOMY AND ASTROPHYSICS; cosmic microwave background; cosmology; gravitational lenses; inflation; large scale structure of the Universe