학술논문
Erratum: “A Measurement of the Cosmic Microwave Background B-Mode Polarization Power Spectrum at Sub-degree Scales with POLARBEAR” (2014, ApJ, 794, 171)
Document Type
article
Author
Ade, The Polarbear Collaboration PAR; Akiba, Y; Anthony, AE; Arnold, K; Atlas, M; Barron, D; Boettger, D; Borrill, J; Chapman, S; Chinone, Y; Dobbs, M; Elleflot, T; Errard, J; Fabbian, G; Feng, C; Flanigan, D; Gilbert, A; Grainger, W; Halverson, NW; Hasegawa, M; Hattori, K; Hazumi, M; Holzapfel, WL; Hori, Y; Howard, J; Hyland, P; Inoue, Y; Jaehnig, GC; Jaffe, AH; Keating, B; Kermish, Z; Keskitalo, R; Kisner, T; Le Jeune, M; Lee, AT; Leitch, EM; Linder, E; Lungu, M; Matsuda, F; Matsumura, T; Meng, X; Miller, NJ; Morii, H; Moyerman, S; Myers, MJ; Navaroli, M; Nishino, H; Orlando, A; Paar, H; Peloton, J; Poletti, D; Quealy, E; Rebeiz, G; Reichardt, CL; Richards, PL; Ross, C; Schanning, I; Schenck, DE; Sherwin, BD; Shimizu, A; Shimmin, C; Shimon, M; Siritanasak, P; Smecher, G; Spieler, H; Stebor, N; Steinbach, B; Stompor, R; Suzuki, A; Takakura, S; Tomaru, T; Wilson, B; Yadav, A; Zahn, O
Source
The Astrophysical Journal. 848(1)
Subject
Language
Abstract
We report an improved measurement of the cosmic microwave background B-mode polarization power spectrum with the Polarbear experiment at 150 GHz. By adding new data collected during the second season of observations (2013-2014) to re-analyzed data from the first season (2012-2013), we have reduced twofold the band-power uncertainties. The band powers are reported over angular multipoles 500 ≤ ℓ ≤ 2100, where the dominant B-mode signal is expected to be due to the gravitational lensing of E-modes. We reject the null hypothesis of no B-mode polarization at a confidence of 3.1σ including both statistical and systematic uncertainties. We test the consistency of the measured B-modes with the Λ Cold Dark Matter (ΛCDM) framework by fitting for a single lensing amplitude parameter A L = 0.60 +0.26-0.24(stat)+0.00-0.04 (inst) ± 0.14(foreground) ± 0.04(multi), where A L = 1 relative to the Planck 2015 best-fit model prediction. We obtain ±0.14(foreground) ±0.04(multi), where is the fiducial ΛCDM value.