Characterization of the polarized synchrotron emission from Planck and WMAP data

Understand

The purpose of this work is to characterize the diffuse Galactic polarized synchrotron, which is the dominant CMB foreground emission at low frequency.

• We present EE, BB, and EB power spectra estimated from polarization frequency maps at 23 and 30 GHz as observed respectively by the WMAP K-band and the Planck lowest frequency channel, for a set of six sky regions covering from 30% to 94% of the sky.
• We study the synchrotron polarization angular distribution and spectral energy distribution (SED) by means of the so-called pseudo-$C_\ell$ formalism, provided by the NaMaster package, in the multipole interval 30 $\leq$ $\ell$ $\leq$ 300.
• Best results are obtained cross-correlating Planck and WMAP data.