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American Astronomical Society, Astrophysical Journal, 2(807), p. 151, 2015

DOI: 10.1088/0004-637x/807/2/151

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Measurements of Sub-Degreeb-Mode Polarization in the Cosmic Microwave Background From 100 Square Degrees of Sptpol Data

Journal article published in 2015 by R. Keisler, S. Hoover, N. Harrington, J. W. Henning, P. A. R. Ade, K. A. Aird, J. E. Austermann, J. A. Beall, A. N. Bender, B. A. Benson, L. E. Bleem ORCID, J. E. Carlstrom, C. L. Chang, H. C. Chiang, H.-M. Cho and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

We present a measurement of the B-mode polarization power spectrum (the BB spectrum) from 100 deg^2 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 300 ≤ ℓ ≤ 2300, and for three spectral combinations: 95 GHz × 95 GHz, 95 GHz × 150 GHz, and 150 GHz × 150 GHz. We subtract small (