Abstract/Details

Observing the Cosmic Microwave Background polarization anisotropy at 40 GHz with QUIET


2010 2010

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Abstract (summary)

The Cosmic Microwave Background has proven to be an invaluable tool for cosmology, but much of the scientific information contained in its polarization anisotropy is still to be discovered. Of particular interest is the angular power spectrum of the tiny B-mode polarization signal, the divergence free component which is geometrically distinct from the dominant E-modes. The theory of inflation, which has been proposed to explain several curious features of our universe, predicts the existence of B-mode fluctuations on large angular scales and at a signal level that may be achievable in the near future.

The Q/U Imaging Experiment (QUIET) is designed to make sensitive measurements of the CMB polarization using arrays of integrated “detectors on a chip” that can be scaled to reach the sensitivity requirements for detecting B-modes.

This thesis covers the design of QUIET, which consists of separate instruments for observation at 40 and 90 GHz. After the discussion of the detectors, which generally applies to both instruments, the remaining sections focus on observations, calibration, and data analysis for the 40 GHz detector. Tests performed on the data indicate some not-yet-identified source of contamination that must be understood and corrected before a reliable result can be obtained.

Indexing (details)


Subject
Astrophysics;
Astronomy
Classification
0596: Astrophysics
0606: Astronomy
Identifier / keyword
Pure sciences; Anisotropy; B-mode fluctuations; Cosmic Microwave Background; Detectors; Polarization
Title
Observing the Cosmic Microwave Background polarization anisotropy at 40 GHz with QUIET
Author
Bischoff, Colin A.
Number of pages
261
Publication year
2010
Degree date
2010
School code
0330
Source
DAI-B 71/10, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9781124197227
Advisor
Winstein, Bruce
Committee member
Guyot-Sionnest, Philippe; Meyer, Stephan S.; Rosner, Jonathan L.; Winstein, Bruce D.
University/institution
The University of Chicago
Department
Physics
University location
United States -- Illinois
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
3419609
ProQuest document ID
755486016
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/755486016
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