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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-ode 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. Finally, 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:
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Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Lawrence Berkeley National Lab. (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

Citation Formats

Adachi, S., Aguilar Faúndez, M. A. O., Akiba, Y., Ali, A., Arnold, K., Baccigalupi, C., Barron, D., Beck, D., Bianchini, F., Borrill, J., Carron, J., Cheung, K., Chinone, Y., Crowley, K., El Bouhargani, H., Elleflot, T., Errard, J., Fabbian, G., Feng, C., Fujino, T., Goeckner-Wald, N., Hasegawa, M., Hazumi, M., Hill, C. A., Howe, L., Katayama, N., Keating, B., Kikuchi, S., Kusaka, A., Lee, A. T., Leon, D., Linder, E., Lowry, L. N., Matsuda, F., Matsumura, T., Minami, Y., Namikawa, T., Navaroli, M., Nishino, H., Peloton, J., Pham, A. T. P., Poletti, D., Puglisi, G., Reichardt, C. L., Segawa, Y., Sherwin, B. D., Silva-Feaver, M., Siritanasak, P., Stompor, R., Tajima, O., Takatori, S., Tanabe, D., Teply, G. P., and Vergès, C. Internal Delensing of Cosmic Microwave Background Polarization B-Modes with the POLARBEAR Experiment. United States: N. p., 2020. Web. doi:10.1103/physrevlett.124.131301.
Adachi, S., Aguilar Faúndez, M. A. O., Akiba, Y., Ali, A., Arnold, K., Baccigalupi, C., Barron, D., Beck, D., Bianchini, F., Borrill, J., Carron, J., Cheung, K., Chinone, Y., Crowley, K., El Bouhargani, H., Elleflot, T., Errard, J., Fabbian, G., Feng, C., Fujino, T., Goeckner-Wald, N., Hasegawa, M., Hazumi, M., Hill, C. A., Howe, L., Katayama, N., Keating, B., Kikuchi, S., Kusaka, A., Lee, A. T., Leon, D., Linder, E., Lowry, L. N., Matsuda, F., Matsumura, T., Minami, Y., Namikawa, T., Navaroli, M., Nishino, H., Peloton, J., Pham, A. T. P., Poletti, D., Puglisi, G., Reichardt, C. L., Segawa, Y., Sherwin, B. D., Silva-Feaver, M., Siritanasak, P., Stompor, R., Tajima, O., Takatori, S., Tanabe, D., Teply, G. P., & Vergès, C. Internal Delensing of Cosmic Microwave Background Polarization B-Modes with the POLARBEAR Experiment. United States. doi:https://doi.org/10.1103/physrevlett.124.131301
Adachi, S., Aguilar Faúndez, M. A. O., Akiba, Y., Ali, A., Arnold, K., Baccigalupi, C., Barron, D., Beck, D., Bianchini, F., Borrill, J., Carron, J., Cheung, K., Chinone, Y., Crowley, K., El Bouhargani, H., Elleflot, T., Errard, J., Fabbian, G., Feng, C., Fujino, T., Goeckner-Wald, N., Hasegawa, M., Hazumi, M., Hill, C. A., Howe, L., Katayama, N., Keating, B., Kikuchi, S., Kusaka, A., Lee, A. T., Leon, D., Linder, E., Lowry, L. N., Matsuda, F., Matsumura, T., Minami, Y., Namikawa, T., Navaroli, M., Nishino, H., Peloton, J., Pham, A. T. P., Poletti, D., Puglisi, G., Reichardt, C. L., Segawa, Y., Sherwin, B. D., Silva-Feaver, M., Siritanasak, P., Stompor, R., Tajima, O., Takatori, S., Tanabe, D., Teply, G. P., and Vergès, C. Wed . "Internal Delensing of Cosmic Microwave Background Polarization B-Modes with the POLARBEAR Experiment". United States. doi:https://doi.org/10.1103/physrevlett.124.131301. https://www.osti.gov/servlets/purl/1616762.
@article{osti_1616762,
title = {Internal Delensing of Cosmic Microwave Background Polarization B-Modes with the POLARBEAR Experiment},
author = {Adachi, S. and Aguilar Faúndez, M. A. O. and Akiba, Y. and Ali, A. and Arnold, K. and Baccigalupi, C. and Barron, D. and Beck, D. and Bianchini, F. and Borrill, J. and Carron, J. and Cheung, K. and Chinone, Y. and Crowley, K. and El Bouhargani, H. and Elleflot, T. and Errard, J. and Fabbian, G. and Feng, C. and Fujino, T. and Goeckner-Wald, N. and Hasegawa, M. and Hazumi, M. and Hill, C. A. and Howe, L. and Katayama, N. and Keating, B. and Kikuchi, S. and Kusaka, A. and Lee, A. T. and Leon, D. and Linder, E. and Lowry, L. N. and Matsuda, F. and Matsumura, T. and Minami, Y. and Namikawa, T. and Navaroli, M. and Nishino, H. and Peloton, J. and Pham, A. T. P. and Poletti, D. and Puglisi, G. and Reichardt, C. L. and Segawa, Y. and Sherwin, B. D. and Silva-Feaver, M. and Siritanasak, P. and Stompor, R. and Tajima, O. and Takatori, S. and Tanabe, D. and Teply, G. P. and Vergès, C.},
abstractNote = {Using only cosmic microwave background polarization data from the polarbear experiment, we measure B-ode 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. Finally, 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.},
doi = {10.1103/physrevlett.124.131301},
journal = {Physical Review Letters},
number = 13,
volume = 124,
place = {United States},
year = {2020},
month = {4}
}

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