Version 1.2 extends a scale-dependent cosmic birefringence analysis using Planck 2018 polarization maps. The dataset, created by Amy Condit for the 22 Blue CMB Birefringence & Standing-Wave Rotation Field, fits the birefringence spectrum α(ℓ) as a superposition of two sinusoidal modes across multipoles ℓ = 400–1600, validated with bootstrap and Monte Carlo resampling.
Use Cases
- Modeling oscillatory structure in the cosmic birefringence spectrum α(ℓ) based on the described two-harmonic fit.
- Testing cosmological signals against instrumental systematics based on the bootstrap validation methodology.
- Comparing isotropic and anisotropic birefringence models based on the series context referencing v1.0 results.
Strengths
- Analysis is based on validated α(ℓ) measurements from Planck 2018 SMICA and NILC polarization maps covering f_sky ≈ 0.467.
- Model fitting uses 1500 bootstrap and Monte Carlo resamples for statistical robustness.
- Includes publication-quality plots and a Python script for reproducing the two-harmonic fit.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Last updated 2026-06-17 21:59:37; freshness should be verified.
Provenance
- Source
- Planck 2018 SMICA and NILC component-separated polarization maps.
- Collection Method
- Derived from validated α(ℓ) measurements, with analysis using bootstrap and Monte Carlo resampling.
- Freshness
- Last updated 2026-06-17 21:59:37.