This page provides data products associated with the analysis of the cosmic polarization rotation using SPTpol CMB polarization data over 500 square degrees described in arXiv:2006.08061, Bianchini et al., (2020). The cosmic rotation band powers are presented over the multipole range 50 <= L <= 2000.

If you have any questions regarding this data set or its use, please contact Federico Bianchini (fbianchini_at_unimelb_dot_edu_dot_au).

Individual figures are available in PDF format here or bundled in a tarball here. We highlight some figures below.

Map of the reconstructed cosmic birefringence fluctuations alpha from the SPTpol 500 square degrees polarization data using the EB quadratic estimator. The map has been smoothed by a 1 deg FWHM Gaussian beam. (Figure 4 in Bianchini et al., 2020)

Anisotropic cosmic rotation power spectrum measured from SPTpol 500 square deg polarization data (red circles) and from the ACTpol experiment (blue squares, Namikawa et al. 2020). The black solid line shows the fiducial scale-invariant cosmic rotation power spectrum assuming A_CB = 1. (Figure 5 in Bianchini et al., 2020)

Bandcenters, bandpowers, and bandpower errors for plotting are provided in a text file here.

The text file contains bandpowers and error bars for cosmic-birefringence spectrum:
1st col) multipole bin center L
2nd col) band power in units of deg^2
3rd col) band power uncertainty in units of deg^2