Constraints on cosmic birefringence using $E$-mode polarisation

Abstract

A birefringent universe could show itself through a rotation of the plane of polarisation of the cosmic microwave background photons. This is usually investigated using polarisation $B$ modes, which is degenerate with miscalibration of the orientation of the polarimeters. Here we point out an independent method for extracting the birefringence angle using only temperature and $E$-mode signals. We forecast that, with an ideal cosmic-variance-limited experiment, we could constrain a birefringence angle of $0.3^{\circ }$ with $3\sigma$ statistical significance, which is close to the current constraints using $B$ modes. We explore how this method is affected by the systematic errors introduced by the polarisation efficiency. In the future, this could provide an additional way of checking any claimed $B$-mode derived birefringence signature.

11 pages

References in corpus (9)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• New Extraction of the Cosmic Birefringence from the Planck 2018 Polarization Data
• Component separation methods for the Planck mission
• New physics from the polarised light of the cosmic microwave background
• Cosmic Birefringence from Planck Data Release 4
• Effect on cosmic microwave background polarization of coupling of quintessence to pseudoscalar formed from the electromagnetic field and its dual
• anesthetic: nested sampling visualisation
• Constraints on Cosmological Parameters from the 500 deg${}^2$ SPTpol Lensing Power Spectrum
• Frequency-Dependent Constraints on Cosmic Birefringence from the LFI and HFI Planck Data Release 4

Cited by in corpus (1)

• Planck constraints on cross-correlations between anisotropic cosmic birefringence and CMB polarization