Simultaneous determination of the cosmic birefringence and miscalibrated polarization angles II: Including cross frequency spectra

2020/06/29 by Y. Minami, Yuto Minami, Eiichiro Komatsu +2 · 5 citations
Chemistry · Physics and Astronomy · #Anisotropy #Astronomy #Astrophysics #Birefringence #COSMIC cancer database #Chemistry #Computational physics #Cosmic microwave background #Cosmology and Gravitation Theories #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #Microwave #Optics #Physics #Polarization (electrochemistry) #Quantum mechanics #Spectral line #astro-ph.CO

paper · pdf · doi:10.48550/arxiv.2006.15982

published in arXiv (Cornell University) 2020, 103E02 (Cornell University) · 14 pages, 2 figures, 3 tables

arxiv created 2020/06/29 · openalex publication_date 2020/06/29 · arxiv updated 2020/06/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

We develop a strategy to determine the cosmic birefringence and miscalibrated polarization angles simultaneously using the observed EB polarization power spectra of the cosmic microwave background and the Galactic foreground emission. We extend the methodology of Y. Minami et al. (Prog. Theor. Exp. Phys. 2019, 083E02, 2019), which was developed for auto frequency power spectra, by including cross frequency spectra. By fitting one global birefringence angle and independent miscalibration angles at different frequency bands, we determine both angles with significantly smaller uncertainties (by more than a factor of two) compared to the auto spectra.

Citations

• Quintessence and the Rest of the World: Suppressing Long-Range Interactions
• The Python Sky Model: software for simulating the Galactic microwave sky
• Simultaneous determination of the cosmic birefringence and miscalibrated polarisation angles from CMB experiments

Cited by

• Study the nature of dynamical dark energy by measuring the CMB polarization rotation angle
• Forecasts of constraining isotropic cosmic birefringence on AliCPT-1
• Planck constraints on the scale dependence of isotropic cosmic birefringence
• Field-level constraints on cosmic birefringence from hybrid ILC maps combining E- and B-mode channels

Related

• Simultaneous determination of the cosmic birefringence and miscalibrated polarisation angles from CMB experiments
• Improved Constraints on Cosmic Birefringence from the WMAP and Planck Cosmic Microwave Background Polarization Data
• Field-level constraints on cosmic birefringence from hybrid ILC maps combining E- and B-mode channels
• Planck constraints on Cosmic Birefringence and its cross-correlation with the CMB
• Improved Absolute Polarization Calibrator for BICEP CMB Polarimeters