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arxiv: astro-ph/0308309 · v1 · submitted 2003-08-19 · 🌌 astro-ph

COMPASS: An Upper Limit on CMB Polarization at an Angular Scale of 20 arc minutes

Philip C. Farese , Giorgio Dall'Oglio , Joshua O. Gundersen , Brian G. Keating , Slade Klawikowski , Lloyd Knox , Alan Levy , Philip M. Lubin
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Chris W. O'Dell Alan Peel Lucio Piccirillo John Ruhl Peter T. Timbie
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keywords limitcompasspolarizationupperangularanisotropiesaprilbuilt
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COMPASS is an on-axis 2.6 meter telescope coupled to a correlation polarimeter operating at a wavelength of 1 cm. The entire instrument was built specifically for CMB polarization studies. We report here on observations of February 2001 - April 2001 using this system. We set an upper limit on E-mode polarized anisotropies of 33.5 uK (95% confidence limit) in the l-range 200-600.

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