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

doi:10.1086/344522

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 journal › Article › peer-review

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 language	English
Pages (from-to)	1-20
Number of pages	19
Journal	ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
Volume	144
Issue number	1
DOIs	https://doi.org/10.1086/344522
Publication status	Published - Jan 2003

Keywords

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

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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.",

keywords = "Cosmic microwave background, Cosmology: observations, Instrumentation: polarimeters, Radio continuum: general",

author = "Keating, \{Brian G.\} and O'Dell, \{Christopher W.\} and Gundersen, \{Joshua O.\} and Lucio Piccirillo and Stebor, \{Nate C.\} and Timbie, \{Peter T.\}",

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AU - O'Dell, Christopher W.

AU - Gundersen, Joshua O.

AU - Piccirillo, Lucio

AU - Stebor, Nate C.

AU - Timbie, Peter T.

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AB - 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.

KW - Cosmic microwave background

KW - Cosmology: observations

KW - Instrumentation: polarimeters

KW - Radio continuum: general

U2 - 10.1086/344522

DO - 10.1086/344522

M3 - Article

SN - 0067-0049

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JO - ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES

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

Abstract

Keywords

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