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

Download
Author
Adachi, S; Aguilar Faundez, MAO; Akiba, Y; Ali, A; Arnold, K; Baccigalupi, C; Barron, D; Beck, D; Bianchini, F; Borrill, J; ...Date
2020-04-01Source Title
Physical Review LettersPublisher
AMER PHYSICAL SOCAffiliation
School of PhysicsMetadata
Show full item recordDocument Type
Journal ArticleCitations
Adachi, S., Aguilar Faundez, 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. ,... Verges, C. (2020). Internal Delensing of Cosmic Microwave Background Polarization B-Modes with the POLARBEAR Experiment. PHYSICAL REVIEW LETTERS, 124 (13), https://doi.org/10.1103/PhysRevLett.124.131301.Access Status
Open AccessOpen Access URL
https://arxiv.org/pdf/1909.13832ARC Grant code
ARC/FT150100074Abstract
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.
Export Reference in RIS Format
Endnote
- Click on "Export Reference in RIS Format" and choose "open with... Endnote".
Refworks
- Click on "Export Reference in RIS Format". Login to Refworks, go to References => Import References