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Journal ArticleOPEN ACCESS

An Instrument for Investigating the Large Angular Scale Polarization of the Cosmic Microwave Background

  • Keating B
  • O’Dell C
  • Gundersen J
  • et al.
The Astrophysical Journal Supplement Series (2003) 144(1) 1-20
DOI: 10.1086/344522
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Abstract

We describe the design and performance of a microwave polarimeter used to make precision measurements of polarized astrophysical radiation in three microwave frequency bands spanning 26-36 GHz. The instrument uses cooled HEMT amplifiers in a correlation polarimeter configuration to achieve high sensitivity and long-term stability. The instrument demonstrates long term stability and has produced the most restrictive upper limits to date on the large angular scale polarization of the 2.7 K cosmic microwave background radiation.

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APA

Keating, B. G., O’Dell, C. W., Gundersen, J. O., Piccirillo, L., Stebor, N. C., & Timbie, P. T. (2003). An Instrument for Investigating the Large Angular Scale Polarization of the Cosmic Microwave Background. The Astrophysical Journal Supplement Series, 144(1), 1–20. https://doi.org/10.1086/344522

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