Authors
PAR Ade, Y Akiba, AE Anthony, K Arnold, M Atlas, D Barron, D Boettger, J Borrill, S Chapman, Y Chinone, M Dobbs, T Elleflot, J Errard, G Fabbian, C Feng, D Flanigan, A Gilbert, W Grainger, NW Halverson, M Hasegawa, K Hattori, M Hazumi, WL Holzapfel, Y Hori, J Howard, P Hyland, Y Inoue, GC Jaehnig, AH Jaffe, B Keating, Z Kermish, R Keskitalo, T Kisner, M Le Jeune, AT Lee, EM Leitch, E Linder, M Lungu, F Matsuda, T Matsumura, X Meng, NJ Miller, H Morii, S Moyerman, MJ Myers, M Navaroli, H Nishino, A Orlando, H Paar, J Peloton, D Poletti, E Quealy, G Rebeiz, CL Reichardt, PL Richards, C Ross, I Schanning, DE Schenck, BD Sherwin, A Shimizu, C Shimmin, M Shimon, P Siritanasak, G Smecher, H Spieler, N Stebor, B Steinbach, R Stompor, A Suzuki, S Takakura, T Tomaru, B Wilson, A Yadav, O Zahn, Polarbear Collaboration
Publication date
2014/10/7
Journal
The Astrophysical Journal
Volume
794
Issue
2
Pages
171
Publisher
IOP Publishing
Description
We report a measurement of the B-mode polarization power spectrum in the cosmic microwave background (CMB) using the Polarbear experiment in Chile. The faint B-mode polarization signature carries information about the universe's entire history of gravitational structure formation, and the cosmic inflation that may have occurred in the very early universe. Our measurement covers the angular multipole range 500< ℓ< 2100 and is based on observations of an effective sky area of 25 with 3 farcm 5 resolution at 150 GHz. On these angular scales, gravitational lensing of the CMB by intervening structure in the universe is expected to be the dominant source of B-mode polarization. Including both systematic and statistical uncertainties, the hypothesis of no B-mode polarization power from gravitational lensing is rejected at 97.2% confidence. The band powers are consistent with the standard cosmological model …
Scholar articles
PAR Ade, Y Akiba, AE Anthony, K Arnold, M Atlas… - The Astrophysical Journal, 2014
PAR Ade, M Aguilar, Y Akiba, K Arnold, C Baccigalupi… - The Astrophysical Journal, 2017