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

Preprint

19 September 2002

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/0111276

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

ANGULAR SCALE POLARIZATION
MICROWAVE BACKGROUND
LARGE ANGULAR SCALE
COSMIC MICROWAVE
POLARIMETER
HEMT

All Related Versions

Version 1, 2001-11-14, ArXiv
Version 2, 2002-09-19, ArXiv
Published version: The Astrophysical Journal Supplement Series, 144 (1), 1.

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