A Measurement of the Degree Scale CMB $B$-mode Angular Power Spectrum with POLARBEAR
- Adachi, S.
- Aguilar Faúndez, M.A.O.
- Arnold, K.
- Baccigalupi, C.
- Barron, D.
- Beck, D.
- Beckman, S.
- Bianchini, F.
- Boettger, D.
- Borrill, J.
- Carron, J.
- Chapman, S.
- Cheung, K.
- Chinone, Y.
- Crowley, K.
- Cukierman, A.
- Dobbs, M.
- El Bouhargani, H.
- Elleflot, T.
- Errard, J.
- Fabbian, G.
- Feng, C.
- Fujino, T.
- Galitzki, N.
- Goeckner-Wald, N.
- Groh, J.
- Hall, G.
- Halverson, N.
- Hamada, T.
- Hasegawa, M.
- Hazumi, M.
- Hill, C.A.
- Howe, L.
- Inoue, Y.
- Jaehnig, G.
- Jeong, O.
- Kaneko, D.
- Katayama, N.
- Keating, B.
- Keskitalo, R.
- Kikuchi, S.
- Kisner, T.
- Krachmalnicoff, N.
- Kusaka, A.
- Lee, A.T.
- Leon, D.
- Linder, E.
- Lowry, L.N.
- Mangu, A.
- Matsuda, F.
- Minami, Y.
- Navaroli, M.
- Nishino, H.
- Pham, A.T.P.
- Poletti, D.
- Puglisi, G.
- Reichardt, C.L.
- Segawa, Y.
- Silva-Feaver, M.
- Siritanasak, P.
- Stebor, N.
- Stompor, R.
- Suzuki, A.
- Tajima, O.
- Takakura, S.
- Takatori, S.
- Tanabe, D.
- Teply, G.P.
- Tsai, C.
- Verges, C.
- Westbrook, B.
- Zhou, Y.
DOIAbstract
International audienceWe present a measurement of the B-mode polarization power spectrum of the cosmic microwave background (CMB) using data taken from 2014 July to 2016 December with the Polarbear experiment. The CMB power spectra are measured using observations at 150 GHz with an instantaneous array sensitivity of on a 670 square degree patch of sky centered at (R.A., decl.) = (+0h12m0s, −59°18′). A continuously rotating half-wave plate is used to modulate polarization and to suppress low-frequency noise. We achieve 32 μK arcmin effective polarization map noise with a knee in sensitivity of ℓ = 90, where the inflationary gravitational-wave signal is expected to peak. The measured B-mode power spectrum is consistent with a ΛCDM lensing and...
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