Improved Upper Limit on Degree-scale CMB B-mode Polarization Power from the 670 Square-degree POLARBEAR Survey
- Adachi, S.
- Adkins, T.
- Faúndez, M.A.O. Aguilar
- Arnold, K.S.
- Baccigalupi, C.
- Barron, D.
- Chapman, S.
- Cheung, K.
- Chinone, Y.
- Crowley, K.T.
- Elleflot, T.
- Errard, J.
- Fabbian, G.
- Feng, C.
- Fujino, T.
- Galitzki, N.
- Halverson, N.W.
- Hasegawa, M.
- Hazumi, M.
- Hirose, H.
- Howe, L.
- Ito, J.
- Jeong, O.
- Kaneko, D.
- Katayama, N.
- Keating, B.
- Kisner, T.
- Krachmalnicoff, N.
- Kusaka, A.
- Lee, A.T.
- Linder, E.
- Lonappan, A.I.
- Lowry, L.N.
- Matsuda, F.
- Matsumura, T.
- Minami, Y.
- Murata, M.
- Nishino, H.
- Nishinomiya, Y.
- Poletti, D.
- Reichardt, C.L.
- Ross, C.
- Segawa, Y.
- Siritanasak, P.
- Stompor, R.
- Suzuki, A.
- Tajima, O.
- Takakura, S.
- Takatori, S.
- Tanabe, D.
- Teply, G.
- Yamada, K.
- Zhou, Y.
DOIAbstract
International audienceWe report an improved measurement of the degree-scale cosmic microwave background B-mode angular-power spectrum over 670 deg$^{2}$ sky area at 150 GHz with Polarbear. In the original analysis of the data, errors in the angle measurement of the continuously rotating half-wave plate, a polarization modulator, caused significant data loss. By introducing an angle-correction algorithm, the data volume is increased by a factor of 1.8. We report a new analysis using the larger data set. We find the measured B-mode spectrum is consistent with the ΛCDM model with Galactic dust foregrounds. We estimate the contamination of the foreground by cross-correlating our data and Planck 143, 217, and 353 GHz measurements, where its spec...
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