论文信息 - Measurement of the Cosmic Microwave Background Polarization Lensing Power Spectrum from Two Years of POLARBEAR Data - 字舞流文

Measurement of the Cosmic Microwave Background Polarization Lensing Power Spectrum from Two Years of POLARBEAR Data

We present a measurement of the gravitational lensing deflection power spectrum reconstructed with two seasons of cosmic microwave background polarization data from the Polarbear experiment. Observations were taken at 150 GHz from 2012 to 2014 and surveyed three patches of sky totaling 30 square degrees. We test the consistency of the lensing spectrum with a cold dark matter cosmology and reject the no-lensing hypothesis at a confidence of 10.9σ, including statistical and systematic uncertainties. We observe a value of AL = 1.33 ± 0.32 (statistical) ±0.02 (systematic) ±0.07 (foreground) using all polarization lensing estimators, which corresponds to a 24% accurate measurement of the lensing amplitude. Compared to the analysis of the first-year data, we have improved the breadth of both the suite of null tests and the error terms included in the estimation of systematic contamination.

Adrian T. Lee | C. Baccigalupi | N. Katayama | R. Stompor | O. Jeong | A. Suzuki | M. Hazumi | O. Tajima | E. Linder | Y. Minami | G. Puglisi | Praweeen Siritanasak | A. Kusaka | B. Keating | C. Reichardt | F. Bianchini | G. Teply | B. Sherwin | J. Carron | K. Arnold | D. Barron | D. Beck | S. Beckman | Y. Chinone | J. Errard | G. Fabbian | N. Goeckner-wald | M. Hasegawa | C. Hill | D. Leon | L. Lowry | F. Matsuda | M. Navaroli | H. Nishino | D. Poletti | M. Silva-Feaver | T. Matsumura | T. Elleflot | T. Fujino | Y. Segawa | C. Feng | K. Cheung | H. E. Bouhargani | H. Hirose | S. Kikuchi | A. Pham | S. Takatori | D. Tanabe | M. A. O. A. Fa'undez | T. Hamada | A. Lee | C. Tsai

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