A Measurement of the cosmic microwave background B-mode polarization power spectrum at subdegree scales from two years of POLARBEAR data
- Ade, P. A.R.
- Aguilar Faúndez, Mario
- Akiba, Y.
- Arnold, K.
- Aumont, J.
- Barron, D.
- Beck, D.
- Bianchini, F.
- Boettger, D.
- Borrill, J.
- Chapman, S.
- Chinone, Y.
- Crowley, K.
- Cukierman, A.
- Dünner, R.
- Dobbs, M.
- Ducout, A.
- Elleflot, T.
- Errard, J.
- Fabbian, G.
- Feeney, S. M.
- Feng, C
- Fujino, T
- Galitzki, N
- Gilbert, A.
- Goeckner-Wald, N
- Groh, J. C.
- Hall, G.
- Halverson, N.
- Hamada, T.
- Hasegawa, M.
- Hazumi, M.
- Hill, C. A.
- Howe, L.
- Inoue, Y.
- Jaehnig, G.
- Jaffe, A. H.
- Jeong, O
- Kaneko, D.
- Katayama, N.
- Keating, B.
- Keskitalo, R.
- Kisner, T.
- Krachmalnicoff, N.
- Kusaka, A.
- Le Jeune, M.
- Lee, A. T.
- Leitch, E. M.
- Leon, D.
- Linder, E.
- Lowry, L.
- Matsuda, F.
- Matsumura, T.
- Minami, Y.
- Montgomery, J.
- Navaroli, M.
- Nishino, H.
- Paar, H.
- Peloton, J.
- Pham, A. T. P.
- Poletti, D.
- Puglisi, G.
- Reichardt, C. L.
- Richards, P. L.
- Ross, C.
- Segawa, Y.
- Sherwin, B. D.
- Silva-Feaver, M.
- Siritanasak, P.
- Stebor, N.
- Stompor, R.
- Suzuki, A.
- Tajima, O.
- Takakura, S.
- Takatori, S.
- Tanabe, D.
DOIAbstract
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 2100 ℓ , 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 si...
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