An instrument for investigating the large angular scale polarization of the cosmic microwave background

Brian G. Keating, Christopher W. O'Dell, Joshua O. Gundersen, Lucio Piccirillo, Nate C. Stebor, Peter T. Timbie

Research output: Contribution to journalArticle

16 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)1-20
Number of pages20
JournalAstrophysical Journal, Supplement Series
Volume144
Issue number1
DOIs
StatePublished - Jan 1 2003

Keywords

  • Cosmic microwave background
  • Cosmology: observations
  • Instrumentation: polarimeters
  • Radio continuum: general

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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