Internal delensing of Cosmic Microwave Background polarization B-modes with the POLARBEAR experiment
Cosmology and Nongalactic Astrophysics
2020-04-08 v2 Instrumentation and Methods for Astrophysics
General Relativity and Quantum Cosmology
Abstract
Using only cosmic microwave background polarization data from the POLARBEAR experiment, we measure -mode polarization delensing on subdegree scales at more than significance. We achieve a 14% -mode power variance reduction, the highest to date for internal delensing, and improve this result to 2% 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 -mode experiments.
Keywords
Cite
@article{arxiv.1909.13832,
title = {Internal delensing of Cosmic Microwave Background polarization B-modes with the POLARBEAR experiment},
author = {S. Adachi and M. A. O. Aguilar Faúndez and Y. Akiba and A. Ali and K. Arnold and C. Baccigalupi and D. Barron and D. Beck and F. Bianchini and J. Borrill and J. Carron and K. Cheung and Y. Chinone and K. Crowley and H. El Bouhargani and T. Elleflot and J. Errard and G. Fabbian and C. Feng and T. Fujino and N. Goeckner-Wald and M. Hasegawa and M. Hazumi and C. A. Hill and L. Howe and N. Katayama and B. Keating and S. Kikuchi and A. Kusaka and A. T. Lee and D. Leon and E. Linder and L. N. Lowry and F. Matsuda and T. Matsumura and Y. Minami and T. Namikawa and M. Navaroli and H. Nishino and J. Peloton and A. T. P. Pham and D. Poletti and G. Puglisi and C. L. Reichardt and Y. Segawa and B. D. Sherwin and M. Silva-Feaver and P. Siritanasak and R. Stompor and O. Tajima and S. Takatori and D. Tanabe and G. P. Teply and C. Vergès},
journal= {arXiv preprint arXiv:1909.13832},
year = {2020}
}
Comments
Matches version published in Physical Review Letters