Imperial College London

Carlo R. Contaldi

Faculty of Natural SciencesDepartment of Physics

Professor of Theoretical Physics



+44 (0)20 7594 1527c.contaldi




505Huxley BuildingSouth Kensington Campus






BibTex format

author = {Contaldi, CR},
doi = {1/41},
journal = {Astronomical Journal},
title = {Imaging parity-violating modes in the CMB},
url = {},
volume = {153},
year = {2017}

RIS format (EndNote, RefMan)

AB - 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 $\alpha (\hat{{\boldsymbol{n}}})$.
AU - Contaldi,CR
DO - 1/41
PY - 2017///
SN - 0004-6256
TI - Imaging parity-violating modes in the CMB
T2 - Astronomical Journal
UR -
UR -
UR -
VL - 153
ER -