作者
R Keisler, S Hoover, N Harrington, JW Henning, PAR Ade, KA Aird, JE Austermann, JA Beall, AN Bender, BA Benson, LE Bleem, JE Carlstrom, CL Chang, HC Chiang, HM Cho, R Citron, TM Crawford, AT Crites, T De Haan, MA Dobbs, W Everett, J Gallicchio, J Gao, EM George, A Gilbert, NW Halverson, D Hanson, GC Hilton, GP Holder, WL Holzapfel, Z Hou, JD Hrubes, N Huang, J Hubmayr, KD Irwin, L Knox, AT Lee, EM Leitch, D Li, D Luong-Van, DP Marrone, JJ McMahon, J Mehl, SS Meyer, L Mocanu, T Natoli, JP Nibarger, V Novosad, S Padin, C Pryke, CL Reichardt, JE Ruhl, BR Saliwanchik, JT Sayre, KK Schaffer, E Shirokoff, G Smecher, AA Stark, KT Story, C Tucker, K Vanderlinde, JD Vieira, G Wang, N Whitehorn, V Yefremenko, O Zahn
发表日期
2015/7/9
期刊
The Astrophysical Journal
卷号
807
期号
2
页码范围
151
出版商
IOP Publishing
简介
We present a measurement of the B-mode polarization power spectrum (the BB spectrum) from 100 of sky observed with SPTpol, a polarization-sensitive receiver currently installed on the South Pole Telescope. The observations used in this work were taken during 2012 and early 2013 and include data in spectral bands centered at 95 and 150 GHz. We report the BB spectrum in five bins in multipole space, spanning the range , and for three spectral combinations: 95 GHz× 95 GHz, 95 GHz× 150 GHz, and 150 GHz× 150 GHz. We subtract small (< 0.5σ in units of statistical uncertainty) biases from these spectra and account for the uncertainty in those biases. The resulting power spectra are inconsistent with zero power but consistent with predictions for the BB spectrum arising from the gravitational lensing of E-mode polarization. If we assume no other source of BB power besides lensed B modes, we …
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R Keisler, S Hoover, N Harrington, JW Henning… - The Astrophysical Journal, 2015