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Imaging parity-violating modes in the CMB

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Title: Imaging parity-violating modes in the CMB
Authors: Contaldi, CR
Item Type: Journal Article
Abstract: Correlations of polarization components in the coordinate frame are a natural basis for searches of parity-violating modes in the cosmic microwave background. This fact can be exploited to build estimators of parity-violating modes that are local and robust with respect to partial-sky coverage or inhomogeneous weighting. As an example application of a method based on these ideas, we develop a peak stacking tool that isolates the signature of parity-violating modes. We apply the tool to Planck maps and obtain a constraint on the monopole of the polarization rotation angle $\alpha \lt 0\buildrel{\circ}\over{.} 72$ at 95% We also demonstrate how the tool can be used as a local method for reconstructing maps of direction dependent rotation $\alpha (\hat{{\boldsymbol{n}}})$.
Issue Date: 3-Jan-2017
Date of Acceptance: 17-Oct-2016
URI: http://hdl.handle.net/10044/1/51371
DOI: https://dx.doi.org/10.3847/1538-3881/153/1/41
ISSN: 0004-6256
Publisher: American Astronomical Society
Journal / Book Title: Astronomical Journal
Volume: 153
Issue: 1
Copyright Statement: © 2017 The American Astronomical Society. All rights reserved.
Keywords: Science & Technology
Physical Sciences
Astronomy & Astrophysics
cosmic background radiation
cosmology: theory
polarization
techniques: polarimetric
MICROWAVE BACKGROUND POLARIZATION
GRAVITY-WAVES
ANISOTROPY
STATISTICS
SIGNATURE
CLUSTERS
PROBE
astro-ph.CO
gr-qc
hep-th
0201 Astronomical And Space Sciences
Publication Status: Published
Open Access location: http://iopscience.iop.org/article/10.3847/1538-3881/153/1/41/meta
Article Number: ARTN 41
Appears in Collections:Physics
Theoretical Physics



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