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

Adachi, S.
•
Aguilar Faundez, M. A. O.
•
Akiba, Y.
altro
Verges, C.
2020
  • journal article

Periodico
PHYSICAL REVIEW LETTERS
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.
DOI
10.1103/PhysRevLett.124.131301
WOS
WOS:000522625500001
SCOPUS
2-s2.0-85083755418
Archivio
http://hdl.handle.net/20.500.11767/114996
Diritti
open access
Soggetti
  • Cosmology and Nongala...

  • Settore FIS/05 - Astr...

Web of Science© citazioni
12
Data di acquisizione
Jun 6, 2022
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